vb与C 的语法区别

vb与C 的语法区别 C#: vb与C#的语法区别 public String name { 1.get { 变量声名 C# : ... int x; return ...; String s; } String s1, s2; set { Object obj; ... = value; Object obj = new Object(); } public String name; VB语法 } Dim x As Integer Dim s As String VB: Dim s1, s2 As String Public Property Name As String Dim obj 'Implicitly Object Dim obj As New Object() Get Public name As String ... Return ...; End Get 2语句 C#: Set Response.Write("123456"); ... = Value; VB: End Set Response.Write("123456") End Property 3.注释语句 //这是c#注释 6.数组 /* C# C#的多行注 String[] a = new String[10]; 释 a[0] = "1"; */ a[1] = "2"; a[2] = "3"; VB: ... '这是VB的注释 //二维数组 String[][] a = new String[3][3]; 4.获得URL 传递的变量 a[0][0] = "1"; C#: a[1][0] = "2"; String s = Request.QueryString["Name"]; a[2][0] = "3"; String value = Request.Cookies["key"]; VB: VB: Dim a(10) As String Dim s, value As String a(0) = "1" s = Request.QueryString("Name") a(1) = "2" value = Request.Cookies("Key").Value a(2) = "3" ... 5.声明属性 Dim a(3,3) As String break; a(0,0) = "1" } a(1,0) = "2" VB: a(2,0) = "3" Select (a) case 0 : Dim a() As String ... a(0,0) = "1" case1 : a(1,0) = "2" ... a(2,0) = "3" case 2 : ... Dim a(,) As String End Select a(0,0) = "1" a(1,0) = "2" 10 .For循环语句 a(2,0) = "3" C# for (int i=0; i<10; i++) a(i) = i; 7.变量初始化 VB: C#: Dim I As Integer String s = "Hello World"; For I = 0 To 10 int i = 10; a(i) = i double[] a = { 3.14, 4.53, 5.10 }; Next VB: Dim s As String = "Hello World" 11. While 循环 Dim i As Integer = 10 C#: Dim a() As Double = { 3.14, 4.53, 5.10 } int i = 0; while (i<10) { 8.判断语句(If 语句) Console.WriteLine(i.ToString()); if (i!=10) { i ++; ... } } VB: Dim I As Integer VB: I = 0 If Not (i=10) Do While I < 10 ... Console.WriteLine(I.ToString()) End If I = ++ Loop 9.分支语句(case 语句) 12 .字符串连接 C#: C#: switch (a) { String s1; case 0 : String s2 = "hello"; ... s2 += " world"; break; s1 = s2 + " !!!"; case 1 : VB: ... Dim s1, s2 As String break; s2 = "hello" case 2 : ... s2 &= " world" namespace MySpace { s1 = s2 & " !!!" public class A : B { int x; public F() { x = 10; } 声明事件 public void Add(int x) { this.x += x; } C#: public int GetNum() { return x; } void MyButton_Click(Object sender, } EventArgs E) { } ... } VB: VB: Imports System Sub MyButton_Click(Sender As ObjecNamest, E pace MySpace As EventArgs) Public Class A : Inherits B Dim x As Integer... End Sub Public Sub New() MyBase.New() x = 10 13 .声明Object End Sub C# : MyObject obj = Public Sub Add(x As Integer) (MyObject)Session["XiaoYear"]; Me.x = Me.x + x IMyObject iObj = obj End Sub VB: Public Function GetNum() As Integer Dim bj As MyObject Return x Dim iObj As IMyObject End Function obj = Session("XiaoYear") iObj = CType(obj, IMyObject) End Class End Namespace 14. 数据类型转换 C# 16. 声明类的主函数 int i = 3; C#: String s = i.ToString(); using System; double d = Double.Parse(s); public class ConsoleCS { VB: public ConsoleCS() { Dim i As Integer Console.WriteLine("Object Created"); Dim s As String } Dim d As Double public static void Main (String[] args) i = 3 { s = i.ToString() Console.WriteLine("Hello World"); d = CDbl(s) ConsoleCS ccs = new ConsoleCS(); } 15 .类的声明和继承 } C#: using System; VB " Imports System Public Class ConsoleVB Public Sub New() MyBase.New() Console.WriteLine("Object Created") End Sub Public Shared Sub Main() Console.WriteLine("Hello World") Dim cvb As ConsoleVB cvb = New ConsoleVB() End Sub End Class