wfRyq vj †ewmK WU †bU nv‡Z Lwo · Visual Basic Dot Net Hate Kharee by Maruf Ahmed, Published by Director : Systech Publications, 38/3 Banglabazar, Dhaka-1100. e-mail : [email protected]

f~wgKv 3

hviv wfRyq¨vj †ewmK WU †b‡Ui †cÖvMÖvwgs RM‡Z cÖ‡ek Ki‡Z Pvb Zv‡ì Rb¨

wfRyq¨vj †ewmK WU †bU

nv‡Z Lwo

gviæd Avn‡g`

wmm‡UK cvewj‡KkÝ

evsjvevRvi eyK GÛ Kw¤úDUvi Kg‡c ø·

38/3 evsjvevRvi, XvKv -1100|

†dvb t 7112406, 0171346538,

I‡qe mvBU : www.systechdigital.com

4 wfRyq¨vj †ewmK WU †bU nv‡Z Lwo

wfRyq¨vj †ewmK WU †bU nv‡Z Lwo

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wmm‡UK cvewj‡KkÝ

†jLK t gviæd Avn‡g`

B‡gBj t [email protected]

cÖ_g cÖKvk t gvP© 2004 Bs

cÖ”Q` wWRvBb t gviæd Avn‡g`

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Visual Basic Dot Net Hate Kharee by Maruf Ahmed, Published by Director :

Systech Publications, 38/3 Banglabazar, Dhaka-1100.

e-mail : [email protected] , Price : TK – 45.

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hv‡ì gnvb AvZ¥ Z¨v‡M AvR evsjv

fvlvq iPbv Ki‡Z cviwQ Avgvi GB

eBmg~n, †mme fvlv ˆmwbK‡ì cÖwZ

DrmM© Kijvg Avgvi GB eBwU|


f~wgKv 7

wfRyq¨vj †ewmK WU †bU nv‡Z Lwo

m~wPcÎ

Aa¨vq 1 t f~wgKv

wfRyq¨vj †ewmK WU †bU (wfRyq¨vj †ewmK 7.0) ................................ 8

wfRyq¨vj †ewmK WU †bU G ms‡hvwRZ bZzb wdPvimg~n ....................... 10

†WUv UvB‡c cwieZ©b ................................................................. 10

†fwiqvej wWK¬v‡ii †ÿ‡Î ........................................................... 13

wfRyq¨vj †ewmK 7.0/WU †b‡U †Z wmb‡U· Gi cwieZ©bmg~n ................ 14

Acv‡iUi ................................................................................ 16

†cÖvcvwU©R ................................................................................ 17

DBRvi wWdvBb&W UvBc .............................................................. 18

K‡›Uªvj †d¬v ............................................................................. 18

A¨vwcø‡Kkb UvBc ...................................................................... 20

†WUv A¨v‡·m ........................................................................... 20

wWevwMs .................................................................................. 21

AviI wKQy cwieZ©b ................................................................... 21

wfRyq¨vj †ewmK Pvjv‡bvi Rb¨ wm‡÷g †hvM¨Zv ................................. 22

Aa¨vq 2 t Bb÷‡jkb

wfRyq¨vj †ewmK Bb÷‡jkb cÖwµqv ............................................... 26

Aa¨vq 3 t nv‡Z Lwo

wfRyq¨vj †ewmK WU †bU PvjyKiY ................................................. 34

wj¼ †j‡ej (Link Label) ...........................................................40

†WU UvBg wcKvi (DateTimePicker) ........................................... 41


†Wv‡gBb Avc WvDb (DomainUpDown) ....................................... 41

wbD‡gwiK Avc WvDb (NumericUpDown) .................................... 42

†cR †mU Avc WvqvjM (PageSetupDialog) .................................. 42

wcÖ›U wcÖwfD K‡›Uªvj (PrintPreviewControl) .................................... 42

†bvwUdvB AvBKb (NotifyIcon) ................................................... 43

dg© ....................................................................................... 44

Uzj e· .................................................................................45

mwjDkb G·‡cøvivi .................................................................. 46

†KvW DB‡Ûv ............................................................................ 46

Aa¨vq 4 t D`vniY

GKwU mvaviY DB‡ÛvR dg© ˆZwi ................................................... 52

DB‡ÛvR d‡g©i eW©vi cwieZ©b ......................................................54

A`„k¨ DB‡ÛvR dg© ˆZwii Rb¨.................................................... 57

UªvÝcv‡i›U DB‡ÛvR dg© ˆZwi ....................................................... 60

d›U WvqvjM K‡¤úv‡b‡›Ui gva¨‡g d›Uwj÷ cÖ`k©b ............................. 63

cvmIqvW© †U·U e· ˆZwi ........................................................... 66

wfwe WU †b‡U AviI wKQz D`vniY ................................................ 70

B‡gR d‡g©U KbfvU© Kivi Rb¨ .................................................... 70

wfwe WU †b‡U GDI+ eªvk wb‡q KvR ............................................... 71

†WUv wiW Kivi Rb¨ OleDbDataReader eënvi .............................. 75

wfwe WU †b‡U †_ªwWs D`vniY ...................................................... 77

Kvjvi †MÖwW‡q›U ˆZwi ............................................................... 78

f~wgKv 9


f~wgKv


wfRyq¨vj †ewmK WU †bU (wfRyq¨vj †ewmK 7.0)

wfRyq¨vj †ewmK - wfRyq¨vj †cÖvMÖvwgs RM‡Z RbwcÖq GKwU bvg| ïay eënv‡i mnR‡eva¨Zvi

Kvi‡bB bq - Gi Kvh©cwiwai wekvjZv, Ab¨vb¨ j¨v½y‡q‡Ri wi‡mvm© eënv‡ii myweav BZ¨vw`

†ek wKQy Kvi‡Y wfRyq¨vj †ewmK bexb cÖexb mKj ai‡bi †cÖvMÖvgv‡ii Kv‡QB GKwU RbwcÖq

Uzj n‡q `vwo‡q‡Q|

1991 mv‡j hLb cÖ_g wfRyq¨vj †ewm‡Ki 1.0 fvm©bwU cÖKvwkZ nq - ZLb †_‡KB

(RAD) -wfwËK †W‡fjc‡g›U †gUv‡dvi (metaphor) DB‡ÛvR A¨vwc ø‡Kkb Dbœq‡b

AvwacZ¨ we¯Ívi ïiæ K‡i| wKš‘ †h‡nZz Avgiv ax‡i ax‡i B›Uvi‡bUwfwËK Gwc ø‡Kkb Dbœq‡b

c~Y©Zvi w`‡K G‡Mvw”Q †m‡nZz DB‡ÛvR Ges B›Uvi‡bU Gwc ø‡Kkb Dbœq‡bi Rb¨ Avgv‡ì

cÖ‡qvRb n‡q c‡o AviI AwaK Kg©ÿg †cÖvMÖvwgs g‡W‡ji|

cieZ©x‡Z B›Uvi‡bU md&U&Iq¨vi Dbœqb‡K GKwU eo LvZ wn‡m‡e MY¨ K‡i gvB‡µvmd&U&

Zv‡ì Gw±f G· †UK‡bvjwRi g~j A_© Ges Gi †UKwbK¨vj wbg©vb‰kjx/AvwK©‡UKPvi-G

cwieZ©b Av‡bb| Avevi K¬vB›U mvBW Dbœq‡bi Rb¨ gvB‡µvmd&U& wfRyq¨vj †ewm‡Ki GKwU

jvBUvi/mswÿß fvm©b cÖKvk K‡i hv wfwe w¯ŒÞ (VB Script) bv‡gB cwiwPZ| †mB mv‡_

mv‡_ gvB‡µvmd&U& wfRyq¨vj †ewm‡KiI cÖf~Z Dbœqb mvab K‡i hv‡Z K‡i GwU †W‡fjc‡g›U

Uzj wn‡m‡e kxl©¯’vbxq MY¨ n‡Z cv‡i|

Dbœqb avivi GB cÖev‡n Gi ci G‡jv Rvfv (Java) Ges Gw±f mvfv©i †cR (ASP)

Dbœq‡bi Rb¨ Avc‡W‡UW Uzj| GKB mg‡q gvB‡µvmd&U& KvR KiwQj DB‡ÛvR Ges

B›Uvi‡bU md&U&Iq¨vi Dbœq‡bi Rb¨ GKwU wfbœag©x †cÖvMÖvwgs g‡W‡ji| Avi ZviB djvdj

f~wgKv 11

WU †bU (.NET) †d«gIqvK©Õi - hv RyjvB 2000-G gvB‡µvmd&U& cÖ‡dkbvj †W‡fjcvi&m

Kbdv‡iÝ Aegy³ Kiv nq|

gvB‡µvmd&U& WU †bU c øvUd‡g©i wiwj‡Ri mv‡_ mv‡_ wfRyq¨vj †ewmK GKwU c~Y© Ae‡R±

Awi‡q‡›UW †cÖvMÖvwgs j¨v½y‡q‡R cÖZ¨veZ©b K‡i‡Q| nu¨v, GB WU †bU †dgIqvK© - wfRyq¨vj

†cÖvMÖvwgs-G G‡b‡Q GK wekvj cwieZ©b| WU †bU †d«gIqvK© g~jZ A¨vwcø‡Kkb Dbœq‡b

GKwU mgwš^Z c øvUdg© †hLv‡b B›Uvi‡bU Gwc ø‡Kkb Dbœq‡bi cvkvcvwk DB‡ÛvR c øvUd‡g©i

RbÏ c~Y© wdPvi mg„× Gwc ø‡Kkb Dbœqb Kiv hv‡e| DbœqbKvixMY cÖvqB eënvi K‡ib Ggb

wKQy Kvh©m¤úv`‡bi Rb¨ wekvj GKwU K¬vm †d«gIqvK© mshy³ K‡i‡Q GB WU †bU †d«g

Iqv‡K©| AviI †h K_v¸‡jv bv ej‡jB bq, Zv n‡jv GB WU †bU (Dot Net) †d«gIqvK©

wmwKDwiwU ev wbivcËv, µm-cøvUdg© KwgDwb‡Kkb, wi‡mvm© g¨v‡bR‡g›U Ges cÖmvib‡hvM¨

GKwU mgwš^Z mvwf©m cÖ`vb K‡i|

†h‡nZz .NET †d«gIqvK©wU‡K fwel¨‡Zi DB‡ÛvR Gwc ø‡Kkb Dbœqb Ges B›Uvi‡bU

Gwcø‡K‡kb ˆZwi‡K cÖvavb¨ w`‡q ˆZwi Kiv n‡q‡Q| †h Kvi‡bB Gi cwieZ©b Avb‡Z n‡q‡Q

A‡bK Mfxi †_‡K| wfRyq¨vj †ewmK WU †bU-Gi †ÿ‡ÎI Avcwb †mUvB jÿ¨ Ki‡eb|

†Pv‡L co‡e Gi MVbMZ †ek wKQy cv_©K¨|

wfRyq¨vj †ewm‡Ki PjwZ fvm©‡b †h mKj cwieZ©b Avbv n‡q‡Q Ges bZzb wdPvi ms‡hvRb

Kiv n‡q‡Q Zvi GKwU wPÎ Zz‡j aivi †Póv KiwQ|

wfRyq¨vj †ewmK 6.0 Avi 7.0 Gi g‡a¨ cv_©K¨ †h †KejgvÎ wdPvi ev ÷ªvKPv‡i, Zv bq, G

cv_ ©K¨ †KvwWsÕi †ÿ‡Î AviI †ewk jÿŸxq| ej‡Z cv‡ib gvB‡µvmd&U& wfRyq¨vj ÷zwWI


KZ…©cÿ wfRyq¨vj †ewmKÕi †KvwWs ÷ªvKPv‡iI cwieZ©b G‡b‡Q †ek| Z‡e hZ wKQyB †nvK

bv ‡Kb mnR‡eva¨Zv Avi mij MV‡bi Rb¨ wfRyq¨vj †ewmK AvRI wfRyq¨vj †cÖvMÖvwgs

fvlv¸‡jvi g‡a¨ kxl© ¯’v‡b Ae¯’vb Ki‡Q| myZivs f‡qi wKQyB †bB| †Zv ïiæ Kiv hvK|

wfRyq¨vj †ewmK WU †bU G ms‡hvwRZ bZzb wdPvimg~n

Bb‡nwi‡UÝ (Inheritance)t

wfRyq¨vj †ewmK WU †bU Bb‡nwi‡UÝ mv‡cvU© K‡i| Bb‡nwi‡UÝ n‡jv Ggb GK ai‡bi K¬vm

wWdvBb Kivi cÖwµqv hv derived K¬vmmg~‡ni †ewmm wn‡m‡e KvR K‡i| wfRyq¨vj †ewmK

WU †b‡U ˆZwi mKj K¬vmB evB wWdë Bb‡nwiU¨vej|

gvwë‡_ªwWs (Multithreading) t

wfRyq¨vj †ewmK WU †bU eënvi K‡i Avcwb gvwë‡_ªwWs †cÖvMÖvg (GKvwaK KvR ¯^vaxbfv‡e

m¤úbœ Ki‡Z cv‡i Ggb †cÖvMÖvg) ˆZwi Ki‡Z cvi‡eb| ¯‹¨vjvej A¨vwc ø‡Kkb ˆZwi‡Z

gvwë‡_ªwWs AZ¨vek¨Kxq †Kbbv IqvK©‡jvW e„w×i mv‡_ mv‡_ Avcwb G‡Z †_ªW mshy³ Ki‡Z

cvi‡eb|

A¨vwUªweDU (Attributes) t

A¨vwUªweDUmg~n Avcbvi †cÖvMÖvg Dcv`vbmg~‡n AwZwi³ Bbdi‡gkb mieiv‡ni my‡hvM †`q|

D`vniY¯iƒc XML I‡qe mvwf©‡m eëüZ †Kvb GKwU K¬vm Zvi †Kvb ‡g_WwU G·‡cvR

Ki‡e Zv Avcwb Zv GKwU A¨vwUªweDU eënvi K‡i wba©viY K‡i w`‡Z cv‡ib|

Ifvi‡jvwWs (Overloading)t

‡h mg¯Í †cÖvcvwU©, †g_W Ges cÖwmwWD‡ii bvg GK wKš‘ †WUv UvBc Avjv`v †m mg¯ Í

†cÖvcvwU©, †g_W Ges cÖwmwWDi wWdvBb Kivi ÿgZv‡K Ifvi‡jvwWs ejv nq|

MÖvwd· t

DB‡ÛvR dg© -G mshy³ n‡q‡Q GDI+ , hv †MBg ev ixP MÖvwd·mg„× cwi‡ek ˆZwi‡Z †ek

Kvh©Kix|

†WUv UvB‡c cwieZ©b t

†fwi‡q›U mv‡cvU© K‡i bv t

wfRyq¨vj †ewmK 6.0-G f¨vwi‡q›U (Variant) wQj Gi wWdë BDwbfv‡m©j †WUv UvBc|

wKš‘ wfRyq¨vj †ewmK WU †b‡U Ae‡R± (Object) bvgK †WUv UvB‡ci gva¨‡g G‡K wi‡c øm

Kiv n‡q‡Q| †hLv‡b (Variant) †WUv UvB‡ci wWdë †fjy¨ wQj Empty †mLv‡b GB

Object †WUv UvB‡ci wWdë †fjy¨ n‡”Q Nothing |

f~wgKv 13

Dim var1 as Variant

cwieZ©b n‡q n‡q‡Q t

Dim var1 as Object

Kv‡iwÝ mv‡cvU© K‡i bv t

wfwe WU †b‡U Kv‡iwÝ †WUv UvBc‡K †Wwm‡gj (Decimal)-G cwieZ©b Kiv n‡q‡Q| †h‡nZz

†Wm‡gj-B ivDwÛs bv¤^v‡ii Rb¨ h_vh_ †m‡nZz Kv‡iwÝ msµvš Í Acv‡ikb n¨v‡Ûwjs-Gi

Rb¨ †Wwm‡gj †WUv UvBc ˆZwi Kiv n‡q‡Q GB wfwe WU †b‡U| Kv‡iwÝ g~jZ GKwU 64

we‡Ui bv¤^vi hvi Wvb w`‡Ki 4wU wWwRU eëüZ †Wwm‡gj ev `kwgK Dc¯’vc‡bi Rb¨| Avi

GB bZzb †Wwm‡gj(Decimal) †WUv UvBcwU g~jZ 96 we‡Ui mvBb&W B‡›URvi (Singed

Integer), hvi 28 wU wWwRU `kwgK ev †Wwm‡gj cÖKv‡k eënvi Kiv hvq|

Dim X as Currency


Dim X as Decimal

B‡›URvi (Integer) Ges js -G cwieZ©b t

wfRyq¨vj †ewmK 6.0-G B‡›URvi †WUv UvBcwU wQj GKwU 16 we‡Ui bv¤^vi, hv -32,768

†_‡K 32,767 ch©š Í gvb aviY Ki‡Z cvi‡Zv| wfwe WU †b‡U GB B‡›URvi †WUv UvBc‡K

kU© (Short))†WUv UvB‡ci gva¨‡g wi‡c øm Kiv n‡q‡Q| GwU GKwU 32 we‡Ui †WUv UvBc|

Avi B‡›URvi †WUv UvBc‡K ewa©Z K‡i Gi gvb avi‡Yi †iÄ -2,147,483,648 †_‡K -

2,147,483,647 Kiv n‡q‡Q| Acic‡ÿ js (Long) †WUv UvBc GLb †_‡K GKwU 64

we‡Ui bv¤^vi| ZvB wfRyq¨vj †ewm‡Ki G fvm©‡b 32 weU Acv‡ik‡bi †ÿ‡Î B‡b&Rvi †WUv

UvBc †ek Kvh©Ki|

Dim X as Integer Dim X as Long


Dim X as Short Dim X as Integer

†WU (Date) †WUv UvB‡c cwieZ©b t

wfRyq¨vj †ewmK WU †b‡U †WU (Date) †WUv UvBc GKwU 64 weU B‡›URvi, hv wfwe 6.0

†Z GKwU 64 weU Wej bv¤^vi wn‡m‡e wQj| Z‡e GB †WU (Date) Ges Wej (Double)

†WUv UvBc Kbfvm©b-Gi Rb¨ Avcbv‡K ToOADate Ges FromOADate dvskbmg~n

eënvi Ki‡Z n‡e|

Dim X as Double


Dim X as Double, Y as Date Y = X.ToOADate


DefType mv‡cvU© K‡i bvt

wfRyq¨vj †ewmK WU †b‡U DefType †÷U‡g›U (hv †WUv UvBr UvBc D‡j øL QvovB

†NvlYvK…Z †fwiq¨vejmg~‡ni Rb¨ GKwU wWdë UvBc cÖ`vb Ki‡Zv)-wU Avi mv‡cvU© K‡i

bv|

VarPtr, StrPtr, ObjPtr mv‡cvU© K‡i bvt

wfRyq¨vj †ewmK WU †b‡U VarPtr, StrPtr, ObjPtr GB dvskbmg~n mv‡cvU© K‡i bv| GB

dvskmg~n g~jZ GwcAvB Kjmg~‡n eëüZ †fwiqvej¸‡jvi B‡›URvi A¨v‡Wªm wiUvb© K‡i|

w÷ªs (String) t

wfRyq¨vj †ewmK WU †bU wd·W †jš’ w÷ªs mv‡cvU© K‡i bv|

wb‡Pi †Uwe‡j wfRyq¨vj †ewmK WU †bU ÷zwWI KZ…©K mv‡cvU©KZ… †WUv UvBc cÖ`Ë

n‡jv| †mB mv‡_ G‡ì Kgb j¨v½y‡qR ivbUvBg UvBcmg~n, bwgbvj †÷v‡iR

A¨v‡jv‡Kkb Ges Zv‡ì †fjy¨ †iÄ cÖ`Ë n‡jv t

Visual

Basic

type

Common

language runtime

type structure

Nominal

storage

allocation

Value range

Boolean System.Boolean 2 bytes True or False.

Byte System.Byte 1 byte 0 through 255 (unsigned).

Char System.Char 2 bytes 0 through 65535 (unsigned).

Date System.DateTime 8 bytes 0:00:00 on January 1, 0001

through 11:59:59 PM on

December 31, 9999.

Decimal System.Decimal 16 bytes 0 through +/-

79,228,162,514,264,337,593,543,

950,335 with no decimal point;

0 through +/-

7.92281625142643375935439503

35 with 28 places to the right of

the decimal; smallest nonzero

number is

+/-

0.00000000000000000000000000

01 (+/-1E-28).

Double

(double-

precision

floating-

System.Double 8 bytes -1.79769313486231570E+308

through

-4.94065645841246544E-324 for

negative values;

f~wgKv 15

point) 4.94065645841246544E-324

through

1.79769313486231570E+308 for

positive values.

Integer System.Int32 4 bytes -2,147,483,648 through

2,147,483,647.

Long

(long

integer)

System.Int64 8 bytes -9,223,372,036,854,775,808

through

9,223,372,036,854,775,807.

Object System.Object

(class)

4 bytes Any type can be stored in a

variable of type Object.

Short System.Int16 2 bytes -32,768 through 32,767.

Single

(single-

precision

floating-

point)

System.Single 4 bytes -3.4028235E+38 through -

1.401298E-45 for negative

values; 1.401298E-45 through

3.4028235E+38 for positive

values.

String

(variable-

length)

System.String

(class)

Depends on

implementin

g platform

0 to approximately 2 billion

Unicode characters.

User-

Defined

Type

(structure)

(inherits from

System.ValueType)

Depends on

implementin

g platform

Each member of the structure has

a range determined by its data

type and independent of the

ranges of the other members.

†fwiqvej wWK¬v‡ii †ÿ‡Î t

‡fwiqvej wWK¬v‡ii †ÿ‡Î wfwe 6.0 †Z GKwU eo ai‡bi mgm¨v wQj| d‡j †cÖvMÖvgviMY

cÖvqB mgm¨vq co‡Zb| Pjyb †`Lv hvK mgm¨vwU wK wQjt

wfRyq¨vj †ewmK 6.0 †Z †jLv wb‡Pi †KvwWsUzKz jÿ¨ Kiæb t

Dim x,y as integer

Dc‡ii D`vniYwU‡Z †NvlYvK…Z jv‡bi gva¨‡g †fwiq¨vej `y'†Uv‡KB †MÖvMÖvgviMY B‡›URvi

wn‡m‡e †NvlYv Ki‡Z eënvi K‡i _v‡Kb| wKš‘ wfRyq¨vj †ewmK 6.0 Gi x †fwiq¨vejwU‡K

variant Ges y †fwiq¨vejwU‡K integer wn‡m‡e MÖvn¨ K‡i| hv †cÖvMÖvgv‡ii cÖZ¨vkvi mv‡_

m¤ú~b© Am½wZc~Y©| wfRyq¨vj †ewmK WU †bU GB mgm¨vi h_v_© mgvavb w`‡q‡Q †hLv‡b

DcwiD³ †KvwWsÕi gva¨‡gB Dfq †fwiq¨vejwU‡K B‡›URvi wn‡m‡e MÖvn¨ K‡i| ïay GUzKzB

bq, wfwe WU †bU(VB.NET) †fwiq¨vej †NvlYvi mv‡_ mv‡_ mv‡_B Gi Bwbwkqvj

(initial) †fjy¨ cÖ`v‡bi myweavI w`‡q _v‡K| wb‡Pi †÷U‡g›UwU jÿ¨ Kiæb|


Dim str1 as string="hello"

wfRyq¨vj †ewmK ixW Abwj †fwiq¨vej †Nvlbvi myweav w`‡q‡Q Zvi GB 7.0 fvm©‡b|

Kb÷¨v›U Gi mv‡_ Gi cv_©K¨ n‡jv GwU †Kvb Bwbwk‡qjvB‡Rkb (initialization) QvovB

†NvlYv Kiv hvq| wKš‘ hLbB G‡Z GKwU gvb wba©viY Kiv n‡e, ZLb †_‡K GwU †KejgvÎ

H gvbwU Dc¯’vcb Ki‡e, G‡Z †Kvb cwieZ©b Kiv hv‡e bv| wb‡Pi D`vniYwU †`Lyb t

'no initialization here

Dim readonly x as integer

'in later code

x=100

'now x can't be changed

x=200 '***** error *********

A¨v‡i (Arrays) t

wfRyq¨vj †ewmK 6.0 fvm©‡b A¨v‡i †NvlYvi †ÿ‡Î Avcbv‡K g¨vbyqvwj †cÖvMÖvwgs K‡i Gi

†jvqvi evDÛ(lower bound) Ges Avcvi evDÛ (upper bound) mg~n e‡j w`‡Z n‡Zv| wfwe

WU †bU-G hwÌ A¨v‡ii †jvqvi evDÛ k~b¨ (0) | Avcwb hw` wb‡Pi g‡Zv K‡i A¨v‡i

wWdvBb K‡ib Z‡e GwU cÖK…Z c‡ÿ

Dim aStates(100) as String

101 wU Gwj‡g›U ˆZwi Ki‡e, hvi †jvqvi evDÛ ïb¨ (0) Ges Avcvi evDÛ 100| {GLv‡b

D‡j øL¨ †h wfRyq¨vj †ewmK WU †bU Gi †eUv fvm©‡b DcwiD³ †NvlYvwU 100wU Dcv`vb

ˆZwi K‡i|}

wfRyq¨vj †ewmK 7.0/WU †b‡U †Z wmb‡U· Gi cwieZ©bmg~n

†fwiq¨vej †¯‹vwcs (Variable Scoping)t

wb‡Pi D`vniYUzKz jÿ¨ Kiæb t

If x=y then

Dim z as integer

' other code

End If

z=100 'Outside of If ... Then block

f~wgKv 17

DcwiD³ †KvWUzKz wfRyq¨vj †ewmK 6.0 †Z h_vh_fv‡e ivb Ki‡e KviY G‡Z †Kvb e øK

†j‡fj †fwiq¨vej †¯‹vwcs †bB| wKš‘ GwU AvaywbK †cÖvMÖvwgs fvlvi Av`k© bq| hviv wm-‡Z

KvR K‡ib Zviv wbðqB welqwU fv‡jv K‡iB Rv‡bb| Z‡e myLei GUvB †h wfwe WU †bU

GB wdPviwU mv‡cvU© K‡i|

cÖwmwWDi Ges dvskb (Procedures and Functions) t

wfRyq¨vj †ewmK 6.0-G mKj cÖwmwWDi c¨vivwgUvimg~n evB wWdë (ByRef) evB †idv‡iÝ

†cÖwiZ n‡Zv| wfRyq¨vj †ewmK WU †bU-G mKj cÖwmwWDi c¨vivwgUvimg~n evB wWdë

(ByVal) evB †fjy¨ †cÖwiZ n‡Zv|

wfRyq¨vj †ewmK 6.0-G dvskbmg~n FunctionName = return_value wmb‡U·

eënv‡ii gva¨‡g gvb wiUvb© Ki‡Zv| wKš‘ wfwe WU †bU-G Avcwb Return KxIqvW©

eënv‡ii gva¨‡g dvsk‡bi gvb wiUvb© Kiv‡Z cv‡ib| Z‡e GwU cy‡iv‡bv wmb‡U·I mv‡cvU©

K‡i|

÷¨vwUK cÖwmwWDi t

wfwe WU †bU ÷¨vwUK cÖwmwWDi mv‡cvU© K‡i bv| Avcwb hw` ÷¨vwUK cÖwmwWDi eënvi

Ki‡Z Pvb , Z‡e †m‡ÿ‡Î Avcbv‡K G¸‡jv‡K †i¸jvi mvecÖwmwWDi-G cwieZ©b Ki‡Z n‡e

Ges ÷¨vwUK cÖwmwWD‡i †fwiq¨vejmg~n‡K ÷¨vwUK wn‡m‡e †NvlYv Ki‡Z n‡e|

Static Sub Test()

Dim X as integer

End Sub

cwiewZ©Z n‡q n‡q‡Q t

Sub Test()

Static X as integer

End Sub


Acv‡iUi t

wfRyq¨vj †ewmK WU †b‡U Av‡iKwU eo ai‡bi cwieZ©b Gm‡Q Gi Acv‡iU‡i| wb‡Pi

†Uwe‡j A¨vmvBbK…Z bZzb Acv‡iUimg~‡ni GKwU wj÷ cÖ`Ë n‡jv|

EQV

EQV Acv‡iUiwU wfwe WU †b‡U Ò=Ó Acv‡iU‡i iƒcvš ÍwiZ n‡q‡Q|

A¨vmvBb‡g›U t

wfwe WU †bU †ek wKQy AvKl©Yxq bZzb A¨vmvBb‡g›U Acv‡iUi cÖ`vb K‡i|

Dim intX as Integer

intX = intX + 1


Dim intX as Integer

intX += 1

bZzb A¨vmvBb‡g›U Acv‡iUi

Acv‡iUi A¨vKkb

+= Addition and concatenation

-= Subtraction

*= Multiplication

/= and \= Division

^= Exponentiation

&= String concatenation

f~wgKv 19

†cÖvcvwU©R t

Let, Get Ges Set

wfwe 6-G †Kvb GKwU †fwiq¨ve‡j Ae‡R± Bb÷¨vÝ A¨vmvBb Ki‡Z Set †÷U‡g›UwU

Aek¨B eënvi Ki‡Z n‡Zv| wWdë †cÖvcvwU©RÕi Kvi‡b GwU wfRyq¨vj ‡ewmK 6-G

Avek¨Kxq wQj| wb‡Pi D`vniYwU jÿ¨ Kiæb t

Dim x as Variant

Dim strName as string

'Assign the value of Text1.Text to StrName

'(Text is the default property of the textbox control in VB6)

StrName=Text1

'Here we assign the actual Textbox object to the variable x

'Note that we use the Set keyword so VB knows we want to assign

'to x the object itself instead of the default property

Set x=Text1

wfwe WU †bU †Kvb wWdë †cÖvcvwU©R MÖvn¨ K‡i bv weavq G‡Z Set Kx IqvW©wU eënv‡ii

†Kvb cÖ‡qvRb c‡o bv| wVK GKBfv‡e Let wmb‡U‡·i eënviI wfwe WU †b‡U Dn¨|

wWdë †cÖvcvwU©Rt

wfwe WU †b‡U ‡Kvb Ae‡R‡±i Rb¨ wWdë †cÖvcvwU©R GLb Avi mv‡cvU© K‡i bv| wfRyq¨vj

†ewmK 6.0-‡Z Kv÷g K¬vmmg~‡ni wWdë †cÖvcvwU©R _vK‡Z cvi‡Zv Ges wfRyq¨vj

Ae‡R±mg~‡niI (†hgbt †U·U e·, wj÷ e· Ges K‡¤^v e·) wWdë †cÖvcvwU©R ivLv

†h‡Zv|

strName = Text1 'Text is the

'name of a

'textbox on a

'form

Me.Caption = "Hello World"


strName = Text1.Text 'must use the

'Text property

Me.Caption = "Hello World"


DBRvi wWdvBb&W UvBc t

wfwe WU †bU GLb Avi BDRvi wWdvBb&W UvBc mv‡cvU© K‡i bv| G‡ì cwie‡Z© GLb

÷ªvKPvi eënvi Kiv nq hv AviI †ewk kw³kvjx Ges bgbxq|

Public Type MyCust

strNameas String

strEmail as String

End Type


Public Struct MyCust

Private strNameas String

Private strEmail as String

End Struct

K‡›Uªvj †d¬v t

wfwe WU †b‡U K‡›Uªvj †d¬v-‡Z Lye †ewk cwieZ©b Avbv nq wb| me‡P‡q eo cwieZ©b

†h‡ÿ‡Î Avbv n‡q‡Q Zv n‡jv GoSub KxIqv‡W©| Z‡e †h‡nZz AvaywbK †W‡fjcviMY GB

KxIqvW©wU †Zgb GKUv eënvi K‡ib bv †m‡nZz GwU wb‡q Le GKUv `ytwðš Ív bv Ki‡jI

Pj‡e| Pjyb K‡›Uªvj †d¬v-‡Z †hme cwieZ©b Avbv n‡q‡Q &K bR‡i Zv GKUz †`‡L wbB|

While...Wend

wfwe wU †bU While...Wend ÷ªvKPviwU GLb Avi mv‡cvU© K‡i bv| GwU cwiewZ©Z n‡q

GLb n‡q‡Q t

While....End While

While X<5

'Your Code

Wend


While X<5

'Your Code

End While

f~wgKv 21

GoSub...Return

wfRyq¨vj †ewK‡mi c~e©eZ©x fvm©bmg~‡n †h GoSub ... Return †÷U‡g›U eëüZ n‡Zv PjwZ

fvm©‡b Avcwb Zv wi‡qj mve iæwUbÕi gva¨‡g Ki‡Z cvi‡eb| wb‡Pi D`vniYwU †`Lyb t

Visual Basic 6

Sub TestThis (ByRef i As Integer)

GoSub IncrementThis

Exit Function

IncrementThis:

i = i + 1

Return

End Function

VB.NET

Sub TestThis(ByRef i As Integer)

Increment(i)

End Function

Sub Increment (ByRef i As Integer)

i = i + 1

End Sub

wfRyq¨vj †ewK‡mi PjwZ fvm©‡b GB GoSub ... Return †÷U‡g›U bv _vKvq Kv‡iv Kó bv

†c‡jI Pj‡e| †Kbbv GwU c~‡e© p-code Gi †ÿ‡Î w¯úW mgm¨v Ki‡Zv|

Return

Return †÷U‡g›UwU dvsk‡bi Kjv‡ii wbKU K‡›Uªvj wiUvb© K‡i|

Private Function GetNames() as String

Dim MrfName as string

MrfName = "Try to Play"

GetNames = strName

End Function



Private Function GetNames() as String

Dim MrfName as string

MrfName = "Try to Play"

Return strName

End Function

A¨vwcø‡Kkb UvBc t

wfRyq¨vj †ewmK 6.0-‡Z †`Lv Ggb A‡bK A¨vwc ø‡Kkb UvBc †Ug‡c øU Avcwb Lyu‡R cv‡eb

bv wfRyq¨vj †ewmK WU †b‡U| Z‡e Gmme A¨vwc ø‡Kkb c‡ivÿfv‡e ˆZwii my‡hvM K‡i

w`‡q‡Q wfwe WU †bU| wigyfK…Z Gme A¨vwc ø‡Kkb UvBç‡jv n‡jv t

Webclasses ActiveX documents DHTML applications User controls Property pages

†WUv A¨v‡·m t

Data Binding, RDO Ges ADO:

wfwe WU †bU RDO Ges ADO †WUv †mvm©Õi †WUv evBwÛs mv‡cvU© K‡i bv| G‡ÿ‡Î wb‡Pi

†KvWwU mwVK t

Text.DataField = "Customer_Name"

Set Text1.Datasource = rs

mwZ¨ ej‡Z wfwe WU †b‡U †`qv n‡q‡Q AviI kw³kvjx Ges A¨vWfvÝ †WUv evBwÛs

K¨vcvwewjwU, hv Avcwb wewfbœfv‡e cÖ‡qvM Ki‡Z cvi‡eb|

DAO:

wfwe WU †bU ‡WUv A¨v‡·m Ae‡R± ( Data Access Object[DAO]) mv‡cvU© K‡i bv|

Avcwb G‡ÿ‡Î ADO.NET eënvi Ki‡Z cv‡ib|

f~wgKv 23

wWevwMs t

Debug.Print

wfRyq¨vj †ewmK WU †b‡U Debug.Print-Gi e`‡j Debug.Write A_ev

Debug.Writeline †g_W Dbœqb Kiv n‡q‡Q| wfweÕi Debug K¬vm †g_W Ges †cÖvcvwU©i

GKwU KgwcøU †mU cÖ`vb K‡i hv Avcbv‡K †KvW wWevwMs-G mvnvh¨ Ki‡e †ek|

Debug.Print Err.number


Debug.Writeline Err.Number

A_ev,

Debug.Write Err.Number

Debug.Assert

wfRyq¨vj †ewm‡Ki PjwZ fvm©b Debug.Assert.†g_WwU GLb Avi mv‡cvU© K‡i bv|

eZ©gv‡b GwU wWevM (Debug) K¬v‡mi Fail Ges Assert †g_W Øviv m¤úbœ Kiv n‡q _v‡K|

AviI wKQy cwieZ©b t

IsMissing

wfwe WU †bU IsMissing dvskbwU GLb Avi mv‡cvU© K‡i bv| Gi cwie‡Z© GLb eëüZ

nq IsNothing †÷U‡g›U|

Date$ Ges Time$

Date$ Ges Time$ dvskb yÕwU wfwe WU †b‡U DateString Ges TimeString‡i gva¨‡g

wi‡cøm n‡q‡Q|

Atn, Sgn Ges Sqr


Atn, Sgn Ges Sqr dvskb wZbwU wfwe WU †b‡U System.Math Gi Atan, Sign Ges

Sqrt -Gi gva¨‡g wi‡cøm n‡q‡Q|

†g‡mR e·t

MsgBox dvskbwU MessageBox K¬v‡mi Show †g_‡Wi gva¨‡g wi‡c øm Kiv n‡q‡Q|

MsgBox "VB6 is Great"


MesssageBox.Show "VB.NET is Greater"

wfRyq¨vj †ewmK Pvjv‡bvi Rb¨ wm‡÷g †hvM¨Zv

wfRyq¨vj ÷zwWI WU †bU-Gi wewfbœ Bb÷‡jkb Ack‡bi Rb¨ cÖZ¨vwkZ wm‡÷g †hvM¨Zvi

GKwU wj÷ wb‡P cÖ`vb Kiv n‡jvt

m¤ú~Y© wfRyq¨vj ÷zwWI WU †bU Bb÷‡jk‡bi Rb¨ cÖ‡qvRbxq wm‡÷g †hvM¨Zv t

Visual Studio .NET

Enterprise

Architect

Enterprise

Developer

Professional Academic

Processor PC with a Pentium II-class processor, 450 MHz

(recommended: Pentium III-class, 600MHz)

RAM1 Windows NT 4.0 Workstation Í 64 MB, Windows NT 4.0

Server Í 160 MB

(recommended: 96 MB for Workstation, 192 MB for

Server)

Windows 2000 Professional Í 96 MB; Windows 2000 Server

f~wgKv 25

Í 192 MB

(recommended: 128 MB for Professional, 256 MB for Server)

Windows XP Professional Í 160 MB

(recommended: 192 MB)

Windows XP Home Í 96 MB


Available

Hard Disk

Space2

600 MB on system drive, 3 GB installation drive

Operating

System3, 4

Windows 2000®, Windows XP, and Windows NT 4.0

CD-ROM

or DVD-

ROM

Drive5

Required

Video 800 x 600, 256 colors (recommended: High Color 16-bit)

Mouse Microsoft mouse or compatible pointing device

c„_K c„_K j¨v½y‡qR Bb÷‡jk‡bi Rb¨ wm‡÷g ‡hvM¨Zv t

Visual Basic

.NET

Visual C++

.NET Visual C# .NET

Processor PC with a Pentium II-class processor, 450 MHz

(recommended: Pentium III-class, 600MHz)

RAM1 Windows NT 4.0 Workstation Í 64 MB, Windows NT 4.0

Server Í 160 MB


(recommended: 96 MB for Workstation, 192 MB for

Server)

Windows 2000 Professional Í 96 MB; Windows 2000 Server Í 192 MB

(recommended: 128 MB for Professional, 256 MB for

Server)

Windows XP Professional Í 160 MB


Windows XP Home Í 96 MB


Available

Hard Disk

Space2

600 MB on

system drive, 1.5

GB installation

drive

600 MB on

system drive, 2

GB installation

drive

600 MB on system

drive, 1.5 GB

installation drive

Operating

System3, 4

Windows 2000®, Windows XP and Windows NT 4.0

CD-ROM or

DVD-ROM

Drive5

Required

Video 800 x 600, 256 colors (recommended: High Color 16-bit)

Mouse Microsoft mouse or compatible pointing device

G‡ÿ‡Î Pjyb cÖ_‡gB †`‡L wbB †h‡Kvb GKwU wbw`©ó †KvwWs wfRyq¨vj †ewmK 6.0-‡Z Ges

7.0 (VB.NET) †Z wKfv‡e Ki‡Z nq| G‡Z K‡i `yÕwU fvm©‡bi ga¨Kvi †KvwWs cv_©K¨

mn‡RB Avcbvi †evaMg¨ n‡e|

f~wgKv 27


Bb÷‡jkb


wfRyq¨vj †ewmK Bb÷‡jkb cÖwµqv

wfRyq¨vj ÷zwWI WU †bU-Gi 1 bs wmwWwU WªvB‡f cÖ‡ek Kiv‡bvi wKQyÿ‡Yi g‡a¨B Avcwb

wb‡Pi DB‡ÛvwU †`L‡Z cv‡eb|

GLv‡b mg Í Bb÷‡jkb cÖwµqvwU‡K wZbwU cÖavb fv‡M fvM Kiv n‡q‡Q| G¸‡jv n‡jvt

1. Windows Component Update

2. Visual Studio .NET

3. Service Release

GQvovI Gi wb‡Pi w`‡K AviI wZbwU wj¼/Ackb i‡q‡Q| G¸‡jv eënvi K‡i Avcwb Gi

ReadMe dvBjwU ‡`L‡Z cvi‡eb, wi‡gvU K‡¤úv‡b›U †mUAvc Ki‡Z cvi‡eb Ges

Bb÷‡jkb cÖwµqv †_‡K †ewi‡q Avm‡Z cvi‡eb|

hvB †nvK, Windows Component Update AckbwU‡Z wK¬K Ki‡j †mU Avc cÖwµqv ïiæ

n‡q hv‡e Ges GKwU DB‡Ûv cÖ`k©b Ki‡e|

f~wgKv 29

Avcwb hw` Avcbvi Kw¤úDUv‡i I‡qe cÖ‡R± †nv÷ Ki‡Z Pvb Z‡e †m‡ÿ‡Î cÖ_‡gB Avcwb

Avcbvi AwZwi³ K‡¤úv‡b›U¸‡jv Bb÷j K‡i wbb| GRb¨ Install Components evU‡b

wK¬K Kiæb| Avi hw` Zv bv Pvb Z‡e †m‡ÿ‡Î Avcwb Continue evU‡b wK¬K Kiæb| †h‡nZz

Avwg Avgvi Kw¤úDUv‡i I‡qe cÖ‡R± †nv÷ Ki‡Z Pvw”Q bv †m‡nZz Avwg Continue evU‡b

wK¬K KiwQ| †`L‡eb wKQyÿ‡Yi g‡a¨B †mU Avc Avi DB‡ÛvR Avc‡WU Bb÷‡jkb cÖ‡mm

ïiæ K‡i w`‡q‡Q| GwU Gi ciciB wb‡Pi DB‡ÛvwU cÖ`k©b Ki‡e|


Avcwb Gi k‡Z© m¤§Z n‡j I accept the agreement AckbwU wbe©vPb K‡i Continue

evU‡b wK¬K Kiæb|

GwU †h †h K‡¤úv‡b›Umg~n Bb÷j Ki‡e Gevi Zvi GKwU wj÷ cÖ`k©b Ki‡e| Gevi

Install evU‡b wK¬K Kiæb|

†`L‡eb GwU G‡K G‡K mg¯ Í K‡¤úv‡b›Umg~n Bb÷j Ki‡e|

f~wgKv 31

†mUAvc hw` mg¯ Í K‡¤úv‡b›U Bb÷j Ki‡Z bv cv‡i Z‡e †m‡ÿ‡Î GwU GKwU wi‡cvU© cÖ`vb

Ki‡e| wb‡Pi wP‡Î jÿ¨ Kiæb|

Gevi Done evU‡b wK¬K K‡i cybivq D³ K‡¤úv‡b›U‡K Bb÷j Kiæb| GwU hw` GeviI e¨_©

nq Z‡e †m‡ÿ‡Î m¤¢ve¨ mgvav‡bi Rb¨ WvqvjM DB‡ÛvwU‡Z cÖ`Ë ReadMe evU‡b wK¬K

Kiæb|

Gevi wfRyq¨vj ÷zwWI WU †bU †mUAvc ïiæ n‡e|


Avcwb Gevi jvB‡mÝ A¨vMÖx‡g›UwU c‡o hw` Zv‡Z m¤§Z nb Z‡e I accept the

agreement †iwWI evUbwU‡Z wK¬K Kiæb Ges †cÖvWv± Kx Ges Avcbvi bvg Gw›Uª K‡i

Continue evU‡b wK¬K Kiæb|

Gevi †÷Avc Zvi Ackb c‡e© P‡j hv‡e| Avcwb GLvb †_‡K wK wK AvB‡Ug Bb÷j Ki‡Z

Pvb Ges Zv †Kvb WªvB‡f Bb÷j Ki‡Z Pvb Zv wm‡j± K‡i w`‡Z cvi‡eb| wb‡Pi wP‡Î jÿ¨

Kiæb t

f~wgKv 33

Gevi Install Now! evU‡b wK¬K Kiæb| †`L‡eb wKQyÿ‡Yi g‡a¨B Bb÷‡jkb ïiæ n‡q

†M‡Q|

Bb÷‡jkb cÖwµqv mgvß n‡j GwU †cÖvMÖvg MÖæ‡c wb‡`©wkZ MÖæc Ges AvBKbmg~n ˆZwi K‡i

†`‡e| hv eënvi K‡i cieZ©x‡Z wfRyq¨vj ÷zwWI‡Z cÖ‡ek Ki‡Z cvi‡eb|



nv‡Z Lwo

f~wgKv 35

wfRyq¨vj †ewmK WU †bU PvjyKiY

wfRyq¨vj †ewmK WU †bU Pvjy Ki‡Z All Programs Gi Microsoft Visual Studio

.NET Gi Microsoft Visual Studio .NET AvB‡UgwU‡Z wK¬K Kiæb|

†`L‡eb wKQyÿ‡Yi g‡a¨B gvB‡µvmd&U& WU †bU ÷zwWIÕi ÷vU© †cR †`Lv‡e| wb‡Pi wPÎwU

jÿ¨ Kiæb|

GwU g~jZ wfRyq¨vj ÷zwWI WU †bUÕi GKwU mgwš^Z cwi‡ek| GLvb †_‡K Avcwb PvB‡j

WU †bU ÷zwWI cwievify³ †h‡Kvb Uzj KZ© „K wjwLZ †h‡Kvb cÖ‡R± I‡cb Ki‡Z cvi‡eb|

GRb¨ Gi Open Project evUbwU‡Z wK¬K Kiæb|


bZzb cÖ‡R± ˆZwii Rb¨ Avcbv‡K New Project evU‡b wK¬K Ki‡Z n‡e| GwU Avcbv‡K

GKwU DB‡Ûv cÖ`k©b Ki‡e †hLvb †_‡K Avcwb Avcbvi cÖZ¨vwkZ cÖ‡R‡±i aib wbe©vPb K‡i

w`‡Z cvi‡eb|

GB DB‡ÛvwUi More evUbwU †P‡c Avcwb AviI wKQy Ackb †c‡Z cv‡ib|

f~wgKv 37

DB‡ÛvR A¨vwc ø‡Kkb ˆZwi Ki‡Z †Ug‡c øU †_‡K Windows Application wbe©vPb K‡i

OK Pvcyb|

Gev‡i †h DB‡ÛvwU cÖ`wk©Z n‡e Zvi mv‡_ Avcbvi wfRyq¨vj †ewm‡Ki c~e©eZ©x cwi‡e‡ki

wKQyUv wgj Avcwb Lyu‡R cv‡eb| Avcwb gvDm c‡q›UviwU‡K Uzjevi evU‡bi Dc‡i wb‡q †M‡j


Uzj evi cÖ`wk©Z n‡e Ges mwi‡q Avb‡j Zv Avevi jywK‡q hv‡e| GwU wVK DB‡Ûv‡Ri

Uv¯‹evi nvBW Kivi g‡Zv|

Avcwb jÿ¨ Ki‡j †`L‡eb †h wfRyq¨vj †ewmK WU †bU ÷zwWIÕi UzjeviwU K‡qKwU

MÖæ‡c wef³| †hgb t

Data

Components

Windows Forms

f~wgKv 39

General

cÖwZwU MÖæ‡cB Avevi ms‡hvwRZ n‡q‡Q bZzb wKQy Uzj| †hgb t wj¼ †j‡ej

hv wjw¼s ev nvBcvi wjw¼s eySv‡Z eëüZ nq| †hgbt


d‡g© eëüZ Ae‡R±mg~n Av‡qvRb Ges web¨v‡mi Rb¨ i‡q‡Q †j AvDU Uzj evi, †hLv‡b

cÖ`vb Kiv n‡q‡Q †ek wKQy cÖ‡qvRbxq Uzj|

Gi cÖ‡R± DB‡Ûv‡K AviI †ewk DbœZ Kiv n‡q‡Q| B‡gR ev wcKPvi †cÖvcvwU©‡Z wbe©vwPZ

wcKPvi cÖ`wk©Z nq Ackb wj÷ e‡·B, hv Kv‡Ri †ÿ‡Î †ek mnvqK f~wgKv cvjb K‡i|

G‡Z AviI †hvM Kiv n‡q‡Q G·Uvb©vj Uzj| hv eënvi K‡i G·Uvb©vj Uzj mg~n Uzj †gby‡Z

ms‡hvRb Ki‡Z cvi‡eb| †hgb t Spy++ †K Avcwb PvB‡j GB G·Uvb©vj Uzj eënvi K‡i

Uzj †gby‡Z ms‡hvRb Ki‡Z cv‡ib|

f~wgKv 41

GQvovI Gi †KvW DB‡Ûv‡ZI Avbv n‡q‡Q bZzbZ¡|

wfRyq¨vj †ewmK WU †bU-G mshy³ wKQy bZzb K‡›Uªv‡ji cwiwPwZ wb‡P Zz‡j aiv n‡jv t

wj¼ †j‡ej (Link Label) t

Avcwb GB wj¼ †j‡ej K‡›Uªvj‡K wewfbœ Kv‡R eënvi Ki‡Z cv‡ib| D`vniY¯îƒc, Gi

gva¨‡g Avcwb mn‡RB eënviKvix‡K eySv‡Z mÿg n‡eb †h G‡Z wK¬K Ki‡j wKQy GUv

NU‡e A_©vr GwU wK¬K‡hvM¨| †Kbbv B›Uvi‡b‡Ui GB hy‡M hvivB Avgiv GKev‡ii Rb¨ n‡jI

†Kvb I‡qe mvBU wfwRU K‡iwQ A_ev †Kvb †ní dvBj eënvi K‡iwQ Zv‡ì Kv‡Q Gi

A¨vwUªweDUwU LyeB Kgb| Zvi Dci Avcwb Gi A¨vwUªweDU cwieZ©b K‡i w`‡Z cv‡ib| GwU

B‡Zvg‡a¨B wK¬K Kiv n‡q‡Q wKbv Zv †evSv‡bvi Rb¨ G‡Z Avjv`v KvjviI eënvi Kivi

myweav i‡q‡Q| GB mg¯ Í wen¨vwfqvi wbqš¿‡Yi Rb¨ Gi wb‡æv³ cvuPwU †cÖvcvwU© i‡q‡Q t

LinkBehavior

LinkArea

LinkColor

VisitedLinkColor

LinkVisited .


†WU UvBg wcKvi (DateTimePicker) t

GB K‡›UªvjwU ZvwiL Ges mgqÕi d‡g©UK…Z cÖ`k©b mv‡cvU© K‡i| Avcwb Gi wcÖwWdvBb

d‡g©U †_‡K †h‡Kvb GKwU d‡g©U †e‡Q wb‡Z cvi‡eb|

†Wv‡gBb Avc WvDb (DomainUpDown)t

GB †Wv‡ggBb Avc WvDb K‡›UªvjwU †`L‡Z g~jZ GKwU †U·U e· Ges GK †Rvov A¨v‡ivÕi

mgš^q| GB A¨v‡iv `y'†Uv‡Z wK¬‡Ki gva¨‡g Avcwb GKwU wj÷Õi mv‡c‡ÿ †U·U e‡·i

†U·U cwieZ©b Ki‡Z cvi‡eb|

f~wgKv 43

wbD‡gwiK Avc WvDb (NumericUpDown)t

DB‡ÛvR d‡g©i GB wbD‡gwiK Avc WvDb K‡›UªvjwU †`L‡Z g~jZ GKwU †U·U e· Ges GK

†Rvov A¨v‡ivÕi mgš^q| GB A¨v‡iv `y'†Uv‡Z wK¬‡Ki gva¨‡g Avcwb †U·U e‡·i †fjy¨

A¨vWRv÷ Ki‡Z cvi‡eb|

†ní †cÖvfvBWvi (HelpProvider) t

GB †ní †cÖvfvBWvi K‡¤úv‡b›UwU eënvi K‡i Avcwb †Kvb GKwU †ní dvBj †_‡K wbw ©ó

K‡›Uªv‡ji Rb¨ †ní UwcK wba©viY Ki‡Z cvi‡eb| GgbwK GB †ní dvBjwU HTML A_ev

HTMLHelp 1.x A_ev Zvi cieZ©x †h‡Kvb fvm©b n‡Z cv‡i|

†cR †mU Avc WvqvjM (PageSetupDialog)t

DB‡ÛvR A¨vwc ø‡Kk‡b wcÖw›Us Gi D‡Ï‡k¨ †cR †mU Avc-Gi Rb¨ GB PageSetupDialog

K‡¤úv‡b›UwU eëüZ nq| GwU g~jZ GKwU wcÖKbwdMvW©W WvqvjM e·| GwU eënvi K‡i

Avcwb eënviKvix‡K eW©vi Ges gvwR©b A¨vWRv÷ Kiv, †nWvi Ges dzUvi Ges Awi‡q‡›Ukb

wba©vi‡Yi my‡hvM w`‡Z cv‡ib|

wcÖ›U wcÖwfD K‡›Uªvj (PrintPreviewControl)t

†Kvb WKz‡g›U wcÖ›U Ki‡j †Kgb †`Lv‡e Zv wcÖ›U Kivi c~‡e©B †`‡L †bqvi Rb¨ GB wcÖ›U

wcÖwfD K‡›UªvjwU eëüZ nq|

ms-help://MS.MSDNQTR.2002JAN.1033/vbcon/html/vborihelpproviderctltasks.htm


‡bvwUdvB AvBKb (NotifyIcon)t

Uv¯‹ev‡ii †bvwUdvB Gwiqv‡Z †cÖvMÖvg Bb÷¨vÝ AvBKb Z_v †cÖv‡mm cÖ`k©‡bi Rb¨ GwU

eëüZ nq|

cvVKe„›`, †Zv Pjyb, Gevi Avgiv wfRyq¨vj †ewmK WU †bU-G GKwU mvavib cÖ‡R± ˆZwii

gva¨‡g Dc‡iv³ Av‡jvPbv‡K AviI ¯úó K‡i Zzwj|

cÖ_‡gB gvB‡µvmd&U& wfRyq¨vj ÷zwWI WU †bU-G cÖ‡ek Kiæb| ÷vU© †cR G New Project

kxl©K evUbwU‡Z wK¬K Kiæb| GwU Avcbv‡K wb‡Pi DB‡ÛvwU cÖ`k©b Ki‡e t

†h‡nZz Avgiv DB‡ÛvR A¨vwc ø‡Kkb ˆZwi Ki‡ev †m‡nZz Templates †_‡K Windows

Application wbe©vPb Kiæb| Avcwb PvB‡j Gi Name †U· e‡· Avcbvi cÖ‡R‡±i

bvg Ges Location †U·U e‡· †jv‡Kkb cÖ`vb Ki‡Z cv‡ib| Ab¨_vq GwU Avcbvi

cÖ‡R±i Rb¨ GKwU wWdë bvg I †jv‡Kkb eënvi Ki‡e| Gevi OK evU‡b wK¬K Kiæb|

f~wgKv 45

Gevi c`©vq wfRyq¨vj †ewmK WU †bU-Gi AvB wW B cÖ`wk©Z n‡e| wfwe 6.0-Gi mv‡_ wfwe

7.0 Gi GB AvB wWBwUi †gvUvgywU GKwU wgj i‡q‡Q| ZeyI Avwg Gi GKwU mswÿß cwiPq

w`w”Q t

dg© t

GwU Gi dg©| GwU Avcbvi A¨vwcø‡Kk‡bi g~j K‡›UBbvi hv mg¯ Í K‡›Uªvj‡K aviY K‡i|


Uzj e· t

GwU n‡”Q Gi Uzje·| Avcwb GLvb †_‡K †h †Kvb K‡›Uªvj/Dcv`vb wbe©vPb K‡i d‡g© ¯’vcb

Ki‡Z cvi‡eb|

†cÖvcvwU©R DB‡Ûv t

GwU Gi †cÖvcvwU©R DB‡Ûv, hv K‡›Uªvjmg~‡ni wewfbœ A¨vwUªweD‡Ui gvb wba©vi‡Yi Rb¨ eëüZ

nq|

f~wgKv 47

mwjDkb G·‡c øvivi t

Avcbvi cÖ‡R‡±i mg¯ Í dg©, DBRvi K‡›Uªvj, K¬vm Ges wewfbœ gwWDj G·‡c øvi Kivi Rb¨

GwU eëüZ nq| GwU g~jZ dg© I Ab¨vb¨ K¬vmmg~nÕi eë¯’vcbv mnR Kivi Kv‡R eëüZ

nq|

†KvW DB‡Ûv t


Gevi Avgiv Avgv‡ì Kvw•LZ cÖ‡R±wU ˆZix Ki‡ev| Uzjevi †_‡K GKwU ixP †U·U e·

(RichTextBox) d‡g© ¯’vcb Kiæb| Gevi d‡g© `yÕwU evUb ¯’vcb Kiæb|

d‡g©i Text (wfRyq¨vj †ewmK 6.0-‡Z hv Caption bv‡g wQj) †cÖvcvwU©R-G MyApp

gvbwU cÖ`vb Kiæb| cÖ_g evUbwUi Text †cÖvcvwU©R G Open gvb wba©vib Kiæb| wØZxq

evUbwUi GKB †cÖvcvwU©‡Z Exit gvbwU cÖ`vb Kiæb| Gevi dg©wU †`L‡Z A‡bKUv G iKg

n‡e|

f~wgKv 49

Gevi †KvW DB‡Ûv‡Z 1 bs evU‡bi wK¬K B‡f‡›U bx‡Pi †KvWUzKz wjLyb t

Private Sub Button1_Click(ByVal sender As System.Object, _ ByVal e

As System.EventArgs) Handles Button1.Click

Dim openFile1 As New OpenFileDialog()

' Initialize the OpenFileDialog to look for RTF files.

openFile1.DefaultExt = "*.txt"

openFile1.Filter = "Text Files|*.txt"

' Determine whether the user selected a file from the

' OpenFileDialog.

If (openFile1.ShowDialog()= _ System.Windows.Forms.DialogResult.OK)_

And (openFile1.FileName.Length > 0) Then

' Load the contents of the file into the RichTextBox.

RichTextBox1.LoadFile(openFile1.FileName, _

RichTextBoxStreamType.PlainText)

End If

End Sub

2 bs evU‡bi wK¬K B‡f‡›U bx‡Pi †KvWUzKz wjLyb t

Private Sub Button2_Click(ByVal sender As System.Object, _ ByVal e

As System.EventArgs) Handles Button2.Click

RichTextBox1.Clear()

End Sub

Gevi F5 †P‡c †cÖvMÖvgwU ivb Kiæb| wKQyÿ‡Yi g‡a¨B Avcwb wb‡Pi DB‡ÛvwU †`L‡Z

cv‡eb|

Gevi Open kxl©K evUbwU‡Z wK¬K Kiæb| †`L‡eb GKwU I‡cb WvqvjM e· cÖ`wk©Z

n‡”Q|


Gevi †h †U·U dvBjwU I‡cb Ki‡Z Pvb Zv wbe©vPb K‡i I‡cb evU‡b wK¬K Kiæb| †`L‡eb

ixP †U·U e·wU‡Z wb‡`©wkZ I‡cb n‡q‡Q|

Avi Avcwb hw` †U·U e·wU mKj †jLv gy‡Q †dj‡Z Pvb Clear evUbwU Pvcyb|

GB Aa¨vqwU‡Z wfRyq¨vj †ewmK WU †b‡U ms‡hvwRZ bZzb wdPvimg~n, wfwe 6.0 Ges †b‡U

gaëZ©x cv_©K¨mg~n, Ges wfwe WU †b‡U wKfv‡e †cÖvMÖvg ˆZwi Kiv hvq Zvi wKQ~ D`vniY

†`Ljvg| Z‡e mwZ¨ K_v GUvB †h wfRyq¨vj †ewmK WU †bU cy‡ivcywifv‡e Rvb‡Z Avcbv‡K

Aek¨B A‡bK Mfx‡i Wye w`‡Z n‡e| cieZ©x Aa¨v‡q wKQz mvaviY D`vniY mwbœ‡ewkZ n‡jv

hv Avcbv‡K wfRyq¨vj †ewmK WU †b‡U wewfbœ K‡›Uªvj wb‡q wKfv‡e †cÖvMÖvwgs Ki‡Z nq †m

m¤ú‡K© aviYv †`‡e|

f~wgKv 51


D`vniY


wfRyq¨vj †ewmK WU †b‡U wKfv‡e mvaviY K‡›Uªvjmg~n wb‡q KvR Kiv hvq wb‡P wKQz

D`vni‡Yi gva¨‡g Zv †`Lv‡bv n‡jv t

GKwU mvaviY DB‡ÛvR dg© ˆZwi t

GB D`vni‡Y Avgiv HelloWorld av‡Pi GKwU mvaviY DB‡ÛvR dg© ˆZwi I ivb Kiv

wkL‡ev|

DB‡ÛvR dg© ˆZwi Ki‡Z t

Visual Studio Pvjy Kiæb|

HelloWorld bv‡g GKwU DB‡ÛvR Gwc ø‡Kkb ˆZwi Kiæb|

Gevi Uzjevi †_‡K dg© wWRvBb c¨v‡b‡j cÖ`wk©Z d‡g© GKwU evUb ¯’vcb Kiæb|

f~wgKv 53

evUbwU wm‡j± Ki‡Z evUbwU‡Z wK¬K Kiæb Ges Gi Properties DB‡Ûvi Text

†cÖvcvwU©‡Z Say Hello †U·UwU wj‡L w`b|

Gevi GB A¨vwcø‡KkbwUi Rb¨ †KvW wjLyb t

evU‡b wK¬K B‡f‡›U B‡f›U n¨v‡Ûjvi ms‡hvR‡bi Rb¨ d‡g© ¯’vwcZ evUbwUi Dci

Wej wK¬K Kiæb| †`L‡eb n¨v‡ÛjviwUi †KvW †mKk‡b Bbmvikb c‡q›Um‡gZ

†KvW DB‡ÛvwU cÖ`wk©Z n‡”Q|


Gevi wb‡`©wkZ c‡q‡›U wb‡Pi †KvWUzKz wjLyb t

MessageBox.Show ("Hello, World!")

A¨vwcø‡Kkb ivb Kiv‡bv t

ˆZwiK…Z A¨vwc ø‡KkbwU ivb Kiv‡Z wK‡ev‡W©i F5 wK Pvcyb|

A¨vwcø‡KkbwU ivb Kivi ci Gi evU‡bi wK¬K B‡f‡›U cÖ`Ë wb‡`©kbv h_vh_fv‡e

KvR Ki‡Q wKbv Zv hvPvB Kivi Rb¨ evUbwU‡Z wK¬K Kiæb| †`L‡eb †g‡mR

e·wU cÖ`wk©Z n‡”Q|

Gevi DB‡ÛvR dg©wU eÜ K‡i wfRyq¨vj ÷zwWI WU †b‡U wd‡i Avmyb|

DB‡ÛvR d‡g©i eW©vi cwieZ©b t

GB D`vni‡Y Avgiv GKwU DB‡ÛvR dg© ˆZwi I eW©vi cwieZ©b Kiv wkL‡ev|



FormBorder bv‡g GKwU DB‡ÛvR Gwc ø‡Kkb ˆZwi Kiæb|


f~wgKv 55


†cÖvcvwU©‡Z Fixed Border †U·UwU wj‡L w`b|



Wej wK¬K Kiæb| †`L‡eb n¨v‡ÛjviwUi †KvW ‡mKk‡b Bbmvikb c‡q›Um‡gZ




Me.FormBorderStyle = _

System.Windows.Forms.FormBorderStyle.FixedDialog


ˆZwiK…Z A¨vwc ø‡KkbwU ivb Kiv‡Z Kx-†ev‡W©i F5 wK Pvcyb| Gevi dg©wU‡K

wimvBR Kivi †Póv Kiæb| †`L‡eb dg©wU wimvBR n‡”Q|


KvR Ki‡Q wKbv Zv hvPvB Kivi Rb¨ evUbwU‡Z wK¬K Kiæb| Gevi cybivq

dg©wU‡K wimvBR Kivi †Póv Kiæb| †`L‡eb dg©wU wimvBR n‡”Q bv|


‡bvU t

wfwe WU ‡b‡U Avcwb dg© eW©v‡ii wb‡gœv³ gvb wba©viY Ki‡Z cvi‡eb|

None

Fixed 3D

Fixed Dialog

Fixed Single

Fixed Tool Window

Sizable

Sizable Tool Window

GKBfv‡e

DB‡ÛvR dg© wimvBR Kivi Rb¨ wb‡Pi †KvW eënvi Kiæb|

Form1.Size = New System.Drawing.Size(400, 400)

GwU dg©‡K 400 x 400 wc‡·j d‡g© wimvBR Ki‡e|

DB‡ÛvR d‡g©i †jv‡Kkb wba©vi‡Yi Rb¨ wb‡Pi †KvW eënvi Kiæb|

Form1.Location = New Point(100, 100)

DB‡ÛvR d‡g©i †W¯‹Uc †jv‡Kkb †cvcvwU© wba©vi‡Yi Rb¨ wb‡Pi †KvW eënvi Kiæb|

Dim frmAccounts as new Form()

Set FrmAccounts.DesktopLocation = new _ Point(100,100)

DB‡ÛvR dg©‡K mKj DB‡Ûvi Dc‡i Ae¯’vb Kiv‡bvi Rb¨ wb‡Pi †KvW eënvi Kiæb|

myTopForm.TopMost = True

f~wgKv 57

A`„k¨ DB‡ÛvR dg© ˆZwii Rb¨ t

GB D`vni‡Y Avgiv GKwU DB‡ÛvR dg© ˆZwi I eW©vi cwieZ©b Kiv wkL‡ev|

DB‡ÛvR dg© ‰Zwi Ki‡Z t


FormBorder bv‡g GKwU DB‡ÛvR Gwc ø‡Kkb ˆZwi Kiæb|

Gevi Project †gbyi Add Module mve‡gby wbe©vP‡bi gva¨‡g Avcbvi cÖ‡R‡±

GKwU gwWDj ms‡hvRb Kiæb|


Gevi cÖ`wk©Z WvqvjM e· †_‡K Module AvBKbwU wbe©vPb Kiæb Ges Gi GKwU

bvg cÖ`vb K‡i Open evU‡b wK¬K Kiæb|

wb‡Pi g‡Zv GKwU DB‡Ûv cÖ`wk©Z n‡e|

Gevi gwWDj ev K¬v‡m GKwU Main mve iæwUb ˆZwi Kiæb hv †cÖv‡R‡± ÷vU© Avc Ae‡R±

wn‡m‡e e¨füZ n‡e| wb‡Pi GKwU D`vniY †`qv n‡jv t

f~wgKv 59 Sub Main()

' Instantiate a new instance of Form1.

Dim f1 as New Form1()

' Display a messagebox.

' This shows the application is running,

' yet there is nothing shown to the user.

' This is the point at

' which you customize your form.

System.Windows.Forms.MessageBox.Show( _

"The application is running now, but no forms have

been shown.")

' Customize the form.

f1.Text = "Running Form"

' Show the instance of the form modally.

f1.ShowDialog()

End Sub






Me.FormBorderStyle = _

System.Windows.Forms.FormBorderStyle.FixedDialog


ˆZwiK…Z A¨vwcø‡KkbwU ivb Kiv‡bv c~‡e© Gi ÷vU©Avc Ae‡R± Form1-Gi

cwie‡Z© Sub Main wba©viY K‡i w`b| GRb¨ Project †gbyi G‡Kev‡i wb‡P

Aew¯’Z WindowsApplication...Properties †gby wbe©vPb Kiæb|


Gevi cÖ`wk©Z WvqvjM e· †_‡K ÷vU©Avc Ae‡R± Form1-Gi cwie‡Z© Sub Main wba©viY

K‡i w`b|

ˆZwiK…Z A¨vwc ø‡KkbwU ivb Kiv‡Z Kx-†ev‡W©i F5 wK Pvcyb| †`L‡eb DB‡ÛvR

dg©wU cÖ`wk©Z n‡”Q bv| †Kbbv GwU cÖ_‡g Main() Gi Aš Ífy©³ †KvW ivb

Ki‡Q| d‡j hZÿY bv ch©šÍ wb‡`©kbvi gva¨‡g dg©wU cÖ`k©b Kiv‡bv n‡”Q GwU

ZZÿY A`„k¨ _vK‡e| eënviKvix‡K bv Rvwb‡q e¨vKMÖvD‡Û †Kvb A¨vwc ø‡Kkb

ivb Kiv‡bvi Rb¨ GB c×wZwU eënvi Kiv †h‡Z cv‡i|

UªvÝcv‡i›U DB‡ÛvR dg© ˆZwi t

GB D`vni‡Y Avgiv GKwU DB‡ÛvR dg© ˆZwi I UªvÝcv‡i›U DB‡ÛvR dg© ˆZwi Kivi †KŠkj

wkL‡ev|



Gevi GKwU DB‡ÛvR Gwcø‡Kkb ˆZwi Kiæb|


f~wgKv 61


†cÖvcvwU©‡Z Transparent †U·UwU wj‡L w`b|






Me.Opacity = 0.75



ˆZwiK…Z A¨vwcø‡KkbwU ivb Kiv‡Z wK‡ev‡W©i F5 wK Pvcyb| A¨vwcø‡KkbwU ivb

Kivi ci dg©wU jÿ¨ Kiæb| †`L‡eb dg©wU bb UªvÝcv‡i›U i‡q‡Q|

Gevi dg©wUi evU‡bi wK¬K B‡f‡›U cÖ`Ë wb‡`©kbv h_vh_fv‡e KvR Ki‡Q wKbv

Zv hvPvB Kivi Rb¨ evUbwU‡Z wK¬K Kiæb| †`L‡eb dg©wU wKQzUv UªvÝcv‡i›U n‡q

†M‡Q|

f~wgKv 63


†bvU t

Avcwb GB Opacity †cvcvwU©i gvb 0.0 †_‡K 1.0-Gi g‡a¨ wba©viY Ki‡Z cv‡ib|

d›U WvqvjM K‡¤úv‡b‡›Ui gva¨‡g d›Uwj÷ cÖ`k©bt

GB D`vni‡Y Avgiv d›U WvqvjM K‡¤úv‡b‡›Ui gva¨‡g d›Uwj÷ cÖ`k©b Kiv wkL‡ev|



GKwU DB‡ÛvR Gwc ø‡Kkb ˆZwi Kiæb|

Gevi Uzjevi †_‡K dg© wWRvBb c¨v‡b‡j cÖ`wk©Z d‡g© GKwU evUb, GKwU

†U·e· I GKwU d›U WvqvjM K‡›Uªvj ¯’vcb Kiæb|



†cÖvcvwU©‡Z Font †U·UwU wj‡L w`b|





f~wgKv 65


Private Sub Button1_Click(ByVal sender As_

System.Object,ByVal e As System.EventArgs)_ Handles

Button1.Click

If FontDialog1.ShowDialog() =

DialogResult.OK Then

TextBox1.Font = FontDialog1.Font

End If

End Sub


ˆZwiK…Z A¨vwc ø‡KkbwU ivb Kiv‡Z Kx-†ev‡W©i F5 wK Pvcyb|


KvR Ki‡Q wKbv Zv hvPvB Kivi Rb¨ evUbwU‡Z wK¬K Kiæb| †`L‡eb d›U

WvqvjM e·wU cÖ`wk©Z n‡”Q|


Gevi Avcbvi cQ‡›ì d›UwU wbe©vPb K‡i OK evU‡b wK¬K Kiæb| †`L‡eb †U·U

e‡·i †U·‡Ui d›UI Avcbvi wbe©vwPZ d‡›U cwiewZ©Z n‡q †M‡Q|


cvmIqvW© †U·U e· ˆZwi t

GB D`vni‡Y Avgiv GKwU cvmIqvW© †U·U e· ˆZwi Kiv wkL‡ev|



GKwU DB‡ÛvR Gwc ø‡Kkb ˆZwi Kiæb|

Gevi Uzjevi †_‡K dg© wWRvBb c¨v‡b‡j cÖ`wk©Z d‡g© GKwU †U·U e· ¯’vcb

Kiæb|

f~wgKv 67

Gevi GB A¨vwcø‡KkbwUi †KvW DB‡Ûv‡Z wb‡Pi †KvWUzKz wjLyb t

Private Sub Form1_Load(ByVal sender As_

System.Object, ByVal e As System.EventArgs)_ Handles

MyBase.Load

' Set to no text.

TextBox1.Text = ""

' The password character is an asterisk.

TextBox1.PasswordChar = "*" ' The control will allow no more than 14 characters.

TextBox1.MaxLength = 14

End Sub

End Class


ˆZwiK…Z A¨vwc ø‡KkbwU ivb Kiv‡Z Kx-†ev‡W©i F5 wK Pvcyb|

A¨vwcø‡KkbwU ivb Kivi ci Gi †U·U e‡· wKQz Gw›Uª Kiæb| †`L‡eb mg¯ Í

Gw›Uª cvmIqvW© K¨v‡i±vi Øviv cÖ`wk©Z n‡”Q Ges †U·U e·wU 14 wU Aÿ‡ii

†ewk Aÿi BbcyU wb‡”Q bv|



OpenFileDialog K‡¤úv‡b›U eënvi K‡i dvBj I‡cb Kiv t

GB D`vni‡Y Avgiv OpenFileDialog K‡¤úv‡b›U eënvi K‡i dvBj I‡cb Kiv Kivi

†KŠkj wkL‡ev|



Gevi GKwU DB‡ÛvR Gwc ø‡Kkb ˆZwi Kiæb|



†cÖvcvwU©‡Z Open File †U·UwU wj‡L w`b|





Gevi G‡Z wb‡Pi †KvWUzKz wjLyb t

f~wgKv 69 Private Sub Button1_Click(ByVal sender As_

System.Object,ByVal e As System.EventArgs)_ Handles

Button1.Click

' Displays an OpenFileDialog so the user '

can select a Cursor.

Dim openFileDialog1 As New OpenFileDialog()

openFileDialog1.Filter = "Cursor Files|*.cur"

openFileDialog1.Title = "Select a Cursor File"

' Show the Dialog.

' If the user clicked OK in the dialog

' and a .CUR file was selected, open it.

If openFileDialog1.ShowDialog() = _

DialogResult.OK Then

' Assign the cursor in the Stream to the

' Form's Cursor property.

Me.Cursor=NewCursor(openFileDialog1.OpenFile())

End If

End Sub


ˆZwiK…Z A¨vwc ø‡KkbwU ivb Kiv‡Z wK‡ev‡W©i F5 wK Pvcyb|

A¨vwcø‡KkbwU ivb Kivi ci Gi evUbwU‡Z wK¬K Kiæb| †`L‡eb dvBj I‡cb

WvqvjM e·wU I‡cb n‡q‡Q|


Gevi GLvb †_‡K h_vh_ †jv‡Kk‡b Avcbvi cÖZ¨vwkZ Kvm©i dvBjwU wbe©vPb

K‡i w`b Ges Gi OK evU‡b wK¬K Kiæb| †`L‡eb dg©wUi Kvm©i wn‡m‡e Avcbvi

wbe©vwPZ Kvm©i dvBjwUB cÖ`wk©Z n‡”Q|


wfwe WU †b‡U AviI wKQz D`vniY t

B‡gR d‡g©U KbfvU© Kivi Rb¨ t

GwU B‡gR d‡g©U Kbfvm©‡bi Rb¨ System.Drawing †bg‡¯úm eënvi K‡i| GB

mvaviY wKš‘ Kvh©Ki wfwe WU †bU A¨vwc ø‡KkbwU GKwU B‡gR dvBj‡K GIF, JPG, TIFF

BZ¨vw` bvbv d‡g©‡U msiÿY Ki‡Z cv‡i| Aek¨ GB †KvWUzKz‡Z GKwU B‡gR‡K .GIF

d‡g©‡U KbfvU© Kivi wb‡`©k †`qv Av‡Q Z‡e Avcwb G‡K mvgvb¨ cwieZ©b K‡i GKwU c~Y©v½

B‡gR KbfvU©v‡i cwibZ Ki‡Z cvi‡eb|

Imports System

Imports System.Drawing

Class ConvertImageFormats

Shared Sub main()

Dim strFileToConvert As String

Console.Write("Image File to Convert :")

strFileToConvert = Console.ReadLine()

f~wgKv 71 'Initialize the bitmap object by supplying

'the image file path

Dim b As New Bitmap(strFileToConvert)

'Conver the file in GIF format, also check out

'other formats like JPG, TIFF

b.Save(strFileToConvert + ".gif",

System.Drawing.Imaging.ImageFormat.Gif)

Console.Write("Sucessfully Converted to " & _

strFileToConvert & ".gif")

End Sub

End Class

wfwe WU †b‡U GDI+ eªvk wb‡q KvR t

wb‡Pi †KvWUzKz GKwU line, GKwU ellipse, GKwU curve Ges GKwU polygon Ae‡R±

Wª Ki‡e| †KvWwU‡Z Ae‡R±mg~n wdj Kivi Rb¨ Avwg †cb Ae‡R± eënvi K‡iwQ|

protected overrides sub OnPaint(ByVal e As _

System.Windows.Forms.PaintEventArgs)

Dim g As Graphics = e.Graphics

Dim pn As Pen = New Pen(Color.Green, 10)

g.DrawLine(pn, 100, 10, 30, 10)

g.DrawEllipse(New Pen(Color.Red, 20), 20, 40,_ 20,

20)

g.DrawBezier(New Pen(Color.Blue, 5), New Point(50,

60), New Point(150, 10), New Point(200, 230), New

Point(100, 100))

Dim point1 As PointF = New PointF(50F, 250F)





Dim curvePoints As PointF() = {point1, point2,_

point3, point4, point5}

g.DrawPolygon(New Pen(Color.Chocolate, 10),_

curvePoints)

End Sub

'Brush and Brushes Types

'Brush type is an abstract base class. 'HatchBrush,

LinearGradientBrush, 'PathGradientBrush, SolidBrush


and TextureBrush 'classes are inherited from Brush

class. You 'don't use this class directly.

'All brush types are defined in System.Drawing 'and

its helper namespaces. Before using 'brushes, you

need to add reference to this 'namespace. HatchBrush

and GradientBrush are 'defined in

System.Drawing.Drawing2D namespace.

'You use brushes to fill GDI+ objects with 'certain

kind of brush. You generally call Fill 'methods of

Graphics class to fill various 'objects such as

Ellipse, Arc, or Polygon. 'There are different kinds

of brushes. For 'example, solid brush, hatch brush,

texture 'brush, and gradient brush.

'Solid Brushes

'Solid brushes are normal brushes with no 'style. You

fill GDI+ object with a color. 'SolidBrush type is

used to work with solid 'brushes.


Dim sdBrush1 As SolidBrush = New _

SolidBrush(Color.Red)


SolidBrush(Color.Green)


SolidBrush(Color.Blue)

g.FillEllipse(sdBrush2, 20, 40, 60, 70)

Dim rect As Rectangle = New Rectangle(0, 0, _ 200,

100)

g.FillPie(sdBrush3, 0, 0, 200, 40, 0F, 30F)








g.FillPolygon(sdBrush1, curvePoints)

'Hatch Brushes

'using System.Drawing.Drawing2D;

f~wgKv 73

'The hatch brushes are brushes with a hatch 'style, a

foreground color, and a background 'color. Hatches

are a combination of rectangle 'lines and the area

between the lines. The 'foreground color defines the

color of lines; 'the background color defines the

color of area 'between lines.

'HatchStyle defines the hatch styles.

'Member Name

'BackwardDiagonal

'Cross

'DarkDownwardDiagonal

'DarkHorizontal

'DarkUpwardDiagonal

'DarkVertical

'DashedDownwardDiagonal

'DashedHorizontal

'DashedUpwardDiagonal

'DashedVertical

'DiagonalBrick

'DiagonalCross

'Divot

'DottedDiamond

'DottedGrid

'ForwardDiagonal


'The following code shows how to draw hatch 'brushes.

Protected Overrides Sub OnPaint(ByVal e As _



Dim hBrush1 As HatchBrush = New

HatchBrush(HatchStyle.DiagonalCross, _

Color.Chocolate, Color.Red)

Dim hBrush2 As HatchBrush = New

HatchBrush(HatchStyle.DashedHorizontal, _

Color.Green, Color.Black)

Dim hBrush3 As HatchBrush = New _

HatchBrush(HatchStyle.Weave, Color.BlueViolet,_

Color.Blue)

g.FillEllipse(hBrush1, 20, 80, 60, 20)

Dim rect As Rectangle = New Rectangle(0, 0,_ 200,

100)








g.FillPolygon(hBrush2, curvePoints)

End Sub

'Texture Brushes

'The texture brushes provides you to use an 'image as

brush and fill GDI+ objects with the 'brush. The

following code use ¡°myfile.bmp¡± 'as a brush. You

need to define an Image object 'and create brush with

that Image and pass the 'brush into Fill method of

GDI+ objects.

Dim txBrush As TextureBrush

f~wgKv 75 Protected Overrides Sub OnPaint(ByVal e As



g.FillRectangle(txBrush, ClientRectangle)

End Sub

Private Sub Form1_Load(ByVal sender As _

System.Object, ByVal e As System.EventArgs)_ Handles

MyBase.Load

Dim img As Image = New Bitmap("C:\\myfile.bmp")

txBrush = New TextureBrush(img)

End Sub

'Gradient Brushes

'Gradient brushes are provides more color to 'your

GDI+ objects. By using 'LinearGradientBrush type, you

can blend two 'colors together. The following code

blends red 'and green colors.


Dim rect As Rectangle = New Rectangle(50, 30,_ 200,

200)

Dim lBrush As LinearGradientBrush = New _

LinearGradientBrush(rect, Color.Blue, _ Color.Green,

LinearGradientMode.Vertical)

g.FillRectangle(lBrush, rect)

'This like combines blue and green colors -

Dim lBrush As LinearGradientBrush = New _

LinearGradientBrush(rect, Color.Blue, Color.Green,

LinearGradientMode.Vertical)

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Imports System

Imports System.Data

Imports System.Data.OleDb

'Sample Code:

'In the sample code, I've used an Access 'database to

read the data. Same well known 'steps.

Create Connection

Open Connection

'Create Command Object

'Call Command's ExecuteReader() to return 'DataReader

and used DataReader to get the 'data.

Try

'construct the command object and open a 'connection

to the Contacts table

Dim cmdString As String = "Select ContactID,_

FirstName, LastName from Contacts"

Dim connString As String = _

"Provider=Microsoft.Jet.OLEDB.4.0;Data _

Source=C:\\contactmanagement.mdb"

Dim myConnection As OleDbConnection = New _

OleDbConnection(connString)

' Open connection

myConnection.Open()

'Create OleDbCommand object

Dim TheCommand As OleDbCommand = New _

OleDbCommand(cmdString, myConnection)

TheCommand.CommandType = CommandType.Text

'Create a DataReader and call Execute on the 'Command

Object to construct it

Dim TheDataReader As OleDbDataReader = _

TheCommand.ExecuteReader()

While TheDataReader.Read()

f~wgKv 77 System.Console.Write(TheDataReader("ContactID")_

.ToString())

System.Console.Write(" ")

System.Console.Write(TheDataReader("FirstName")_

.ToString())

System.Console.Write(" ")

System.Console.Write(TheDataReader("LastName")_.ToStr

ing())

System.Console.WriteLine()

End While

Catch ae As OleDbException

MsgBox(ae.Message())

End Try

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Option Strict Off

Imports System

Imports Microsoft.VisualBasic

Imports System.Threading

Class MyThread

Shared Sub main()

Try

'Declare a Thread and Assign it to a Methord Hi

Dim t As New thread(AddressOf hi)

'Declare Another Thread and assign it to Bye

Dim b As New thread(AddressOf bye)

'Set the priority level for each thread

t.Priority = ThreadPriority.Normal

b.Priority = ThreadPriority.Lowest

'Start the thread execution

t.start()

b.start()

Catch e As exception


msgbox(e.tostring)

End Try

End Sub

Shared Sub hi()

'Infinite Loop CTRL + C to Exit

Do While True

console.writeline("hi")

Loop

End Sub

Shared Sub bye()

'Infinite Loop CTRL + C to Exit

Do While True

console.writeline("bye")

Loop

End Sub

End Class

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Protected Overrides Sub OnPaint(ByVal pe As _

PaintEventArgs)

DrawGradient(Color.Blue, Color.Firebrick, _

Drawing.Drawing2D.LinearGradientMode.Horizontal)

End Sub

'The function is:

Private Sub DrawGradient(ByVal color1 As Color, _ ByVal

color2 As Color, ByVal mode As _

System.Drawing.Drawing2D.LinearGradientMode)

Dim a As New System.Drawing.Drawing2D.Linear_

GradientBrush(New RectangleF(0, 0, Me.Width,_

Me.Height), color1, color2, mode)

Dim g As Graphics = Me.CreateGraphics

g.FillRectangle(a, New RectangleF(0, 0, _

Me.Width, Me.Height))

g.Dispose()

End Sub

f~wgKv 79

'You can render text using a similiar method:

Private Sub DrawGradientString(ByVal text as _

String, ByVal color1 As Color, ByVal color2 _ As

Color, ByVal mode As _

System.Drawing.Drawing2D.LinearGradientMode)

Dim a As New System.Drawing.Drawing2D._

LinearGradientBrush(New RectangleF(0, 0, 100,_ 19),

color1, color2, mode)

Dim g As Graphics = Me.CreateGraphics

Dim f As Font

f = New Font("arial", 20, FontStyle.Bold,_

GraphicsUnit.Pixel)

g.DrawString(text, f, a, 0, 0)

g.Dispose()

End Sub

'For this method it is used like this:

DrawGradientString("Hello To You", Color.blue,_

Color.firebrick, _

Drawing.Drawing2D.LinearGradientMode.Vertical)

Documents

wfRyq vj †ewmK WU †bU nv‡Z Lwo · Visual Basic Dot Net Hate Kharee by Maruf Ahmed, Published by Director : Systech Publications, 38/3 Banglabazar, Dhaka-1100. e-mail : [email protected]