asp+|文法 /*
文章出處：http://www.aspCool.com 轉載請註明處處，謝謝！
*/ASP+ 現在支援兩種語言C# (簡稱 "C Sharp"), Visual Basic, and JScript.
基於習慣，在以下的語言介紹中，我們採用的練習和常式採用VB和C#語言來開發Web應用程式.如果想要得到關於.Net技術的詳細資料，請去MS的網站 查看關於 NGWS SDK!
在下面的列表中，你可以看到關於這兩種語言的文法的簡要介紹
1.變數聲名
C# 文法
int x;
String s;
String s1, s2;
Object o;
Object obj = new Object();
public String name;
VB文法
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語句
C#:
Response.Write("豆腐");
VB:
Response.Write("豆腐")
3.備註陳述式
//豆腐製作，都是精品
/*
豆腐製作
，
都是精品
*/
VB:
'豆腐製作，都是精品
' 豆腐製作
'，
'都是精品
4.獲得URL 傳遞的變數
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.聲明屬性
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.數組
C#
String[] a = new String[3];
a[0] = "1";
a[1] = "2";
a[2] = "3";
//二維數組
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變數初始化
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;判斷語句(If 語句)
if (Request.QueryString != null) {
...
}
VB:
If Not (Request.QueryString = Null)
...
End If
9.分支語句(case 語句)
C#:
switch (FirstName) {
case "John" :
...
break;
case "Paul" :
...
break;
case "Ringo" :
...
break;
}
VB:
Select (FirstName)
case "John" :
...
case "Paul" :
...
case "Ringo" :
...
End Select
10 For迴圈語句
C#
for (int i=0; i<3; i++)
a(i) = "test";
VB:
Dim I As Integer
For I = 0 To 2
a(I) = "test"
Next
11 While 迴圈
C#:
int i = 0;
while (i<3) {
Console.WriteLine(i.ToString());
i += 1;
}
VB:
Dim I As Integer
I = 0
Do While I < 3
Console.WriteLine(I.ToString())
I = I + 1
Loop
12 字串串連
C#:
String s1;
String s2 = "hello";
s2 += " world";
s1 = s2 + " !!!";
VB:
Dim s1, s2 As String
s2 = "hello"
s2 &= " world"
s1 = s2 & " !!!"
聲明事件
C#:
void MyButton_Click(Object sender,
EventArgs E) {
...
}
VB:
Sub MyButton_Click(Sender As Object,
E As EventArgs)
...
End Sub
13 聲明Object
C#
MyObject obj = (MyObject)Session["Some Value"];
IMyObject iObj = obj
VB:
Dim bj As MyObject
Dim iObj As IMyObject
obj = Session("Some Value")
iObj = CType(obj, IMyObject)
14 資料類型轉換
C#
int i = 3;
String s = i.ToString();
double d = Double.Parse(s);
VB:
Dim i As Integer
Dim s As String
Dim d As Double
i = 3
s = i.ToString()
d = CDbl(s)
15 類的聲明和繼承
C#:
using System;
namespace MySpace {
public class Foo : Bar {
int x;
public Foo() { x = 4; }
public void Add(int x) { this.x += x; }
public int GetNum() { return x; }
}
}
VB:
Imports System
Namespace MySpace
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