由于一些人对vb.net和c#选择方面存在一些困惑,其实只是语法习惯问题,我把它们的语法列出来比较一下,大家有个感性认识。
1.变量声名
C# 语法
int x;
String s;
String s1, s2;
Object o;
Object obj = new Object();
public String name;
VB语法
Dim x As Integer
Dim s As String
Dim s1, s2 As String
Dim o 'Implicitly Object
Dim obj As New Object()
Public name As String
2语句
C#:
Response.Write("中文c#技术站");
VB:
Response.Write("中文c#技术站")
3.注释语句
//中文c#技术站
/*
欢迎访问
,
中文c#技术站
*/
VB:
'中文c#技术站
4.获得URL 传递的变量
C#:
String s = Request.QueryString["Name"];
String value = Request.Cookies["key"];
VB:
Dim s, value As String
s = Request.QueryString("Name")
value = Request.Cookies("Key").Value
5.声明属性
C#:
public String name {
get {
...
return ...;
}
set {
... = value;
}
}
VB:
Public Property Name As String
Get
...
Return ...;
End Get
Set
... = Value;
End Set
End Property
6.数组
C#
String[] a = new String[3];
a[0] = "1";
a[1] = "2";
a[2] = "3";
//二维数组
String[][] a = new String[3][3];
a[0][0] = "1";
a[1][0] = "2";
a[2][0] = "3";
VB:
Dim a(3) As String
a(0) = "1"
a(1) = "2"
a(2) = "3"
Dim a(3,3) As String
a(0,0) = "1"
a(1,0) = "2"
a(2,0) = "3"
Dim a() As String
a(0,0) = "1"
a(1,0) = "2"
a(2,0) = "3"
Dim a(,) As String
a(0,0) = "1"
a(1,0) = "2"
a(2,0) = "3"
7变量初始化
C#:
String s = "Hello World";
int i = 1
double[] a = { 3.00, 4.00, 5.00 };
VB:
Dim s As String = "Hello World"
Dim i As Integer = 1
Dim a() As Double = { 3.00, 4.00, 5.00 }
8;判断语句(If 语句)
if (Request.QueryString != null) {
...
}
VB:
If Not (Request.QueryString = Null)
...
End If
9.分支语句(case 语句)
C#:
switch (FirstName) {
case "John" :
...
break;
case "Paul" :
...
break;
case "Ringo" :
...
break;
}
VB:
Select (FirstName)
case "John" :
...
case "Paul" :...
case&nb