vb與C#的語法區(qū)別

1、4.獲得URL傳遞的變量C#:Strings=Request.QueryStringName;Stringvalue=Request.Cookieskey;VB:Dims,valueAsStrings=Request.QueryString(Name)value=Request.Cookies(Key).Value5.聲明屬性vb與C#的語法區(qū)別1.變量聲名C#：intx;Strings;Strings1,s2;Objectobj;Objectobj=newObject();publicStringname;VB法DimxAsIntegerDimsAsStringDims1,s2AsStrin

2、gDimobjImplicitlyObjectDimobjAsNewObject()PublicnameAsString2語句C#:Response.Write(123456);VB:Response.Write(123456)3.注釋語句/這是c#注釋/*C#的多行注釋*/VB:這是VB的注釋C#:publicStringnamegetreturn.;set.=value;VB:PublicPropertyNameAsStringGetReturn.;EndGetSet.=Value;EndSetEndProperty6.數(shù)組C#Stringa=newString10;a0=1;a1=2;a

3、2=3;/二維數(shù)組Stringa=newString33;a00=1;a10=2;a20=3;VB:Dima(10)AsStringa(0)=1a(1)=2a(2)=3Dima(3,3)AsStringa(0,0)=1a(1,0)=2a(2,0)=3Dima()AsStringa(0,0)=1a(1,0)=2a(2,0)=3Dima(,)AsStringa(0,0)=1a(1,0)=2a(2,0)=37.變量初始化C#:Strings=HelloWorld;inti=10;doublea=3.14,4.53,5.10;VB:DimsAsString=HelloWorldDimiAsIntege

4、r=10Dima()AsDouble=3.14,4.53,5.8.判斷語句(If語句)if(i!=10)VB:IfNot(i=10)EndIf9.分支語句(case語句)C#:switch(a)case0:break;case1:break;case2:break;VB:Select(a)case0:case1:case2:EndSelect10.For循環(huán)語句C#for(inti=0;i10;i+)a(i)=i;VB:DimIAsIntegerForI=0To10a(i)=iNext11.While循環(huán)C#:10inti=0;while(i10)Console.WriteLine(i.ToS

5、tring();i+;VB:DimIAsIntegerI=0DoWhileI10Console.WriteLine(I.ToString()I=+Loop12.字符串連接C#:Strings1;Strings2=hello;s2+=world;s1=s2+!;VB:Dims1,s2AsStrings2=hellos2&=worlds1=s2&!聲明事件C#:voidMyButton_Click(Objectsender,EventArgsE)VB:SubMyButton_Click(SenderAsObject,EAsEventArgs)EndSub13.聲明ObjectC#:MyObject

6、obj=(MyObject)SessionXiaoYear;IMyObjectiObj=objVB:DimbjAsMyObjectDimiObjAsIMyObjectobj=Session(XiaoYear)iObj=CType(obj,IMyObject)14.數(shù)據(jù)類型轉(zhuǎn)換C#inti=3;Strings=i.ToString();doubled=Double.Parse(s);VB:DimiAsIntegerDimsAsStringDimdAsDoublei=3s=i.ToString()d=CDbl(s)namespaceMySpacepublicclassA:Bintx;publicF

7、()x=10;publicvoidAdd(intx)this.x+=x;publicintGetNum()returnx;VB:ImportsSystemNamespaceMySpacePublicClassA:InheritsBDimxAsIntegerPublicSubNew()MyBase.New()x=10EndSubPublicSubAdd(xAsInteger)Me.x=Me.x+xEndSubPublicFunctionGetNum()AsIntegerReturnxEndFunctionEndClassEndNamespace16.聲明類的主函數(shù)C#:usingSystem;publicclassConsoleCSpublicConsoleCS()Console.WriteLine(ObjectCreated);publicstaticvoidMain(Stringargs)Console.WriteLine(HelloWorld);ConsoleCSccs=newConsoleCS();15.類的聲明和繼承C#:usingSystem;VBImportsSystemPublicClassConsoleVBPublicSubNew()MyBase.New()Console.Write