VB和VB.net编写时的名词、语法、用法差别大吗？ VB和VB.net的区别大吗?有些什么地方不一样(具体从语法...
vb\u548cvb.net\u7684\u533a\u522bVB.NET\u548cVB6.0\u6709\u4ec0\u4e48\u533a\u522b
Visual Basic .NET\u662fMicrosoft Visual Studio .NET\u5957\u4ef6\u4e2d\u4e3b\u8981\u7ec4\u6210\u90e8\u5206\u4e4b\u4e00\u3002.NET\u7248\u672c\u7684Visual Basic\u589e\u52a0\u4e86\u66f4\u591a\u7279\u6027\uff0c\u800c\u4e14\u6f14\u5316\u4e3a\u5b8c\u5168\u9762\u5411\u5bf9\u8c61\uff08\u5c31\u50cfC++\uff09\u7684\u7f16\u7a0b\u8bed\u8a00\u3002\u672c\u6587\u5c06\u4ecb\u7ecdVB.NET\u7684\u65b0\u7279\u6027\uff0c\u5e76\u6bd4\u8f83VB6.0/VB.NET\u4e4b\u95f4\u7684\u533a\u522b\uff0c\u9610\u8ff0\u5982\u4f55\u5229\u7528VB.NET\u7f16\u5199\u7b80\u5355\u7684\u5e94\u7528\u7a0b\u5e8f\u3002
1.1 \u4ec0\u4e48\u662f VB.NET? Microsoft\u63a8\u51fa\u5168\u65b0\u7684\u7f16\u7a0b\u548c\u64cd\u4f5c\u7cfb\u7edfFramework\u2014\u2014.NET\uff0c\u652f\u6301\u591a\u79cd\u8bed\u8a00\u5229\u7528\u516c\u5171.NET\u5e93\u5f00\u53d1\u5e94\u7528\u7a0b\u5e8f\uff0c\u8fd9\u4e9b\u5e94\u7528\u7a0b\u5e8f\u5728.NET Framework\u4e0a\u8fd0\u884c\u3002\u4f7f\u7528Visual Basic\u5728.NET Framework\u4e0a\u7f16\u7a0b\uff0c\u8fd9\u5c31\u662fVB.NET\u3002
\u9996\u5148\uff0c\u8ba9\u6211\u6f14\u793a\u5728VB.NET\u4e2d\u5199\u6700\u7b80\u5355\u7684\u63a7\u5236\u53f0\u7a0b\u5e8f\uff1aHello World\u3002
1.2 Hello, World!\u201cHello World!\u201d\u662f\u521d\u5b66\u8005\u5b66\u4e60Windows\u7f16\u7a0b\u7684\u4ee3\u8868\u6027\u7a0b\u5e8f\u3002\u6211\u4eec\u7684\u7b2c\u4e00\u4e2a\u7a0b\u5e8f\u5c31\u53eb\u505a\u201cHello VB.NET World!\u201d\u3002\u8be5\u7a0b\u5e8f\u5728\u63a7\u5236\u53f0\u8f93\u51fa\u4e00\u53e5\u8bdd\uff1a\u201cHello VB.NET World!\u201d\uff0c\u4ee3\u7801\u5982\u4e0b\u6240\u793a\uff1a
\u4ee3\u7801 1.1: Hello VB.NET World\u4f8b\u5b50Imports System
Module Module1
Sub Main()
System.Console.WriteLine("Hello VB.NET World!")
End Sub
End Module
1.3 VB.NET \u7f16\u8f91\u5668\u548c\u7f16\u8bd1\u5668\u4f60\u53ef\u4ee5\u5728\u8bb0\u4e8b\u672c\u6216VS.NET IDE\u7b49\u4efb\u610f\u6587\u672c\u7f16\u8f91\u5668\u4e2d\u64b0\u5199\u4e0a\u8ff0\u4ee3\u7801\uff0c\u7136\u540e\u4fdd\u5b58\u4e3aHelloWorld.vb\u3002 \u4ee3\u7801\u7f16\u5199\u5b8c\u6210\u4e4b\u540e\uff0c\u8981\u4e48\u5728\u547d\u4ee4\u884c\u3001\u8981\u4e48\u5728VS.NET IDE\u4e2d\u7f16\u8bd1\u5b83\u3002\u5728Microsoft .NET Framework SDK\u4e2d\u5df2\u7ecf\u5305\u62ecVB.NET\u7f16\u8bd1\u5668vbc.exe[][1]\uff0c\u4eceIDE\u6216\u662f\u547d\u4ee4\u884c\u90fd\u53ef\u4ee5\u8c03\u7528\u3002\u8981\u4ece\u547d\u4ee4\u884c\u7f16\u8bd1HelloWorld.vb\uff0c\u8bf7\u5728\u547d\u4ee4\u884c\u7a97\u53e3\u8f93\u5165
vbc HelloWorld.vb /out:HelloWorld.exe /t:exe
\u7f16\u8bd1\u7ed3\u675f\u540e\uff0cHelloWorld.exe\u88ab\u521b\u5efa\u5230\u5f53\u524d\u76ee\u5f55\u4e0b\u3002\u5728\u8d44\u6e90\u7ba1\u7406\u5176\u4e2d\u53cc\u51fb\u56fe\u6807\u6216\u5728\u547d\u4ee4\u884c\u6267\u884c\uff0c\u7a0b\u5e8f\u6b63\u786e\u5730\u8fd0\u884c\u4e86\u3002\u795d\u8d3a\u4f60\u8fdb\u5165VB.NET\u5f00\u53d1\u8005\u7684\u884c\u5217\u3002
Imports \u8bed\u53e5
\u5982\u4f60\u6240\u77e5\uff0c\u5927\u90e8\u5206\u7684.NET\u7c7b\u578b\u90fd\u5728\u540d\u5b57\u7a7a\u95f4\uff08namespace\uff09\u4e2d\u5b9a\u4e49\u3002Namespace\u662f\u5b9a\u4e49\u548c\u7ba1\u7406\u7c7b\u522b\u7684\u8303\u7574\u3002\u5bdf\u770b.NET Framework Class Library\uff0c\u53ef\u4ee5\u770b\u5230\u6570\u4ee5\u767e\u8ba1\u7684namespace\u3002\u4f8b\u5982\uff0cSystem namespace\u5c31\u5305\u62ec\u4e86Console\u3001Object\u7b49\u7c7b\u578b\u5b9a\u4e49\u3002\u5982\u679c\u60f3\u4f7f\u7528Console\u7c7b\uff0c\u9700\u8981\u7528Imports\u6307\u4ee4\u5bfc\u5165System namespace\u3002\u5982\u4e0b\u6240\u793a\uff1a
Imports System\u751a\u81f3\u53ef\u4ee5\u660e\u786e\u5730\u8c03\u7528namespace\u800c\u65e0\u9700\u7528Import\u5bfc\u5165\u3002\u4e0b\u9762\u7684\u4f8b\u5b50\u5c55\u793a\u4e86\u4e0d\u7528Import\u7684\u201cHello World\uff01\u201d\u7a0b\u5e8f\uff1a
\u4ee3\u78011.2: Hello VB.NET World\u4f8b\u5b50Module Module1
Sub Main()
System.Console.WriteLine("Hello VB.NET World!")
End SubEnd Module1.4 \u89e3\u6790 "Hello VB.NET World!"\u7a0b\u5e8f\u7b2c\u4e00\u884c\u662f\uff1a
Imports System; System namespace\u5b9a\u4e49\u4e86Console\u7c7b\uff0c\u8be5\u7c7b\u7528\u4e8e\u8bfb\u5199\u63a7\u5236\u53f0\uff08\u547d\u4ee4\u884c\u7a97\u53e3\uff09\u3002\u7136\u540e\u4f60\u5b9a\u4e49\u4e86\u4e00\u4e2amodule\uff1aModule Module1
\u2026End Module\u6240\u6709\u7684VB\u7a0b\u5e8f\u90fd\u5305\u62ec\u4e00\u4e2aMain()\u65b9\u6cd5\uff0c\u5373\u5e94\u7528\u7a0b\u5e8f\u5165\u53e3\u70b9\u3002\u5728\u4f8b\u5b50\u7a0b\u5e8f\u4e2d\uff0c\u6211\u4eec\u8c03\u7528Console.WriteLine()\u5411\u63a7\u5236\u53f0\u5199\u5165\u201cHello VB.NET World!\u201d\uff1a
Sub Main()
Console.WriteLine(\u201cHello VB.NET World!\u201d) End SubWriteLine()\u65b9\u6cd5\u5f52\u5c5e\u4e8eConsole\u7c7b\uff0c\u5b83\u8d1f\u8d23\u5411\u63a7\u5236\u53f0\u5199\u4e00\u4e2a\u5e26\u6709\u884c\u7ed3\u675f\u7b26\u7684\u5b57\u7b26\u4e32\u3002\u5982\u524d\u6240\u8ff0\uff0cConsole\u7c7b\u5b9a\u4e49\u4e8eSystem namespace\uff0c\u4f60\u901a\u8fc7\u76f4\u63a5\u5f15\u7528\u6765\u63a7\u5236\u7c7b\u6210\u5458\u3002
Console\u7c7b\u8d1f\u8d23\u8bfb\u5199\u7cfb\u7edf\u63a7\u5236\u53f0\u3002\u8bfb\u63a7\u5236\u53f0\u8f93\u5165\u7528Read\u548cReadLine\u65b9\u6cd5\uff0c\u5411\u63a7\u5236\u53f0\u8f93\u51fa\u7528WriteLine\u65b9\u6cd5\u3002
\u88681.1 Console\u7c7b\u5b9a\u4e49\u7684\u65b9\u6cd5
\u65b9\u6cd5 \u7528\u9014 \u4f8b\u5b50
Read \u8bfb\u5165\u5355\u4e2a\u5b57\u7b26 int i = Console.Read();
ReadLine \u8bfb\u5165\u4e00\u884c string str = Console.ReadLine();
Write \u5199\u4e00\u884c Console.Write("Write: 1");
WriteLine \u5199\u4e00\u884c\uff0c\u5e76\u5e26\u4e0a\u884c\u7ed3\u675f\u7b26
Console.WriteLine("Test Output Data with Line");
1.5 VB.NET\u6709\u4ec0\u4e48\u65b0\u7279\u70b9\uff1f VB.NET\u6bd4 VB6.0\u66f4\u52a0\u7a33\u5b9a\uff0c\u800c\u4e14\u5b8c\u5168\u9762\u5411\u5bf9\u8c61\u3002\u4e5f\u8bb8\u4f60\u8fd8\u8bb0\u5f97\uff0cVB6.0\u4e0d\u652f\u6301\u7ee7\u627f\u3001\u91cd\u8f7d\u548c\u63a5\u53e3\uff0c\u6240\u4ee5\u4e0d\u662f\u771f\u6b63\u9762\u5411\u5bf9\u8c61\u7684\u3002\u800cVB.NET\u5219\u652f\u6301\u8fd9\u4e9b\u9762\u5411\u5bf9\u8c61\u7279\u6027\u3002VB6.0\u6709\u4e24\u4e2a\u8584\u5f31\u73af\u8282\u2014\u2014\u591a\u7ebf\u7a0b\u548c\u5f02\u5e38\u5904\u7406\u3002\u5728VB.NET\u4e2d\uff0c\u5f00\u53d1\u591a\u7ebf\u7a0b\u5e94\u7528\u548c\u4f7f\u7528C++/C#\u522b\u65e0\u4e8c\u81f4\uff0c\u7ed3\u6784\u5316\u5f02\u5e38\u5904\u7406\u4e5f\u5f97\u5230\u652f\u6301\u3002\u7a0d\u540e\u6211\u4eec\u4f1a\u8be6\u7ec6\u89e3\u91ca\u8fd9\u4e9b\u7279\u6027\u3002
\u4e0b\u9762\u662fVB.NET\u7684\u7279\u6027\u5217\u8868\u2014\u2014
\u00b7\u9762\u5411\u5bf9\u8c61\u7684\u7f16\u7a0b\u8bed\u8a00\u3002\u652f\u6301\u7ee7\u627f\u3001\u91cd\u8f7d\u3001\u63a5\u53e3\u3001\u5171\u4eab\u6210\u5458\u548c\u6784\u9020\u5668\u3002\u00b7\u652f\u6301\u6240\u6709\u7684CLS\u7279\u6027\uff0c\u5982\u5b58\u53d6\u63a7\u5236.NET\u7c7b\u3001\u4e0e\u5176\u5b83.NET\u8bed\u8a00\u4ea4\u4e92\u3001\u5143\u6570\u636e\u3001\u516c\u5171\u6570\u636e\u7c7b\u578b\u3001\u59d4\u6258\u7b49\u7b49\u3002\u00b7\u591a\u7ebf\u7a0b\u652f\u6301\u3002\u00b7\u7ed3\u6784\u5316\u5f02\u5e38\u5904\u7406\u3002 1.6 \u540d\u5b57\u7a7a\u95f4\u4e0e\u96c6\u5408 \u524d\u9762\u8ba8\u8bba\u4e86\u6211\u4eec\u7684\u7b2c\u4e00\u4e2aVB.NET\u7a0b\u5e8f\u3002\u8be5\u7a0b\u5e8f\u4e2d\u9996\u5148\u5f15\u4eba\u6ce8\u610f\u7684\u662f\u540d\u5b57\u7a7a\u95f4\uff08namespace\uff09\u3002\u5728.NET\u53c2\u8003\u6587\u6863\u4e2d\uff0c\u4f60\u4f1a\u53d1\u73b0\u6bcf\u4e2a\u7c7b\u90fd\u5f52\u5c5e\u4e8e\u67d0\u4e2anamespace\u3002\u90a3\u4e48\uff0cnamespace\u5230\u5e95\u662f\u4ec0\u4e48\uff1f
\u4e00\u4e2anamespace\u662f\u7c7b\u548c\u7ec4\u4ef6\u7684\u903b\u8f91\u7ec4\u5408\uff0c\u5176\u76ee\u7684\u5728\u4e8e\u5c06.NET class\u6309\u7c7b\u522b\u5b9a\u4e49\u3002\u5fae\u8f6f\u501f\u7528\u4e86C++ class packaging\u6982\u5ff5\uff1anamespace\u6765\u63cf\u8ff0\u8fd9\u79cd\u7ec4\u5408\u3002.NET Framework\u4e2d\u7684\u7ec4\u4ef6\u88ab\u79f0\u4e3a\u96c6\u5408\uff08assembly\uff09\u3002\u5168\u90e8.NET\u4ee3\u7801\u5728\u6570\u767e\u4e2a\u5e93\u6587\u4ef6\uff08DLL\uff09\u4e2d\u5b9a\u4e49\u3002Namespace\u628aassembly\u4e2d\u5b9a\u4e49\u7684\u7c7b\u7ec4\u7ec7\u8d77\u6765\u3002\u4e00\u4e2anamespace\u53ef\u4ee5\u5305\u62ec\u591a\u4e2aassembly\uff0c\u4e00\u4e2aassembly\u4e5f\u53ef\u4ee5\u5728\u591a\u4e2anamespace\u4e2d\u5b9a\u4e49\u3002 namespace\u6811\u7684\u6839\u8282\u70b9\u662fSystem namespace\u3002\u5728.NET Library\u4e2d\uff0c\u6bcf\u4e2aclass\u90fd\u5728\u4e00\u7ec4\u76f8\u4f3c\u7684\u7c7b\u522b\u4e2d\u5b9a\u4e49\u3002\u4f8b\u5982\uff0cSystem.Data namespace\u53ea\u5305\u62ec\u6570\u636e\u76f8\u5173\u7c7b\u3002\u540c\u6837\uff0cSystem.Multithreading\u53ea\u5305\u62ec\u591a\u7ebf\u7a0b\u7c7b\u3002
\u5728\u4f7f\u7528.NET\u652f\u6301\u7684\u8bed\u8a00\uff08\u5982C#\u3001VB.NET\u3001C++.NET\u7b49\uff09\u521b\u5efa\u65b0\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u4f60\u4f1a\u6ce8\u610f\u5230\u6bcf\u4e2a\u5e94\u7528\u7a0b\u5e8f\u90fd\u88ab\u5b9a\u4e49\u4e3a\u4e00\u4e2anamespace\uff0c\u800c\u6240\u6709\u7684class\u90fd\u5f52\u5c5e\u4e8e\u8fd9\u4e2anamespace\u3002\u901a\u8fc7\u5f15\u7528\u8fd9\u4e2anamespace\uff0c\u5176\u5b83\u5e94\u7528\u7a0b\u5e8f\u5c31\u80fd\u5b58\u53d6\u8fd9\u4e9bclass\u3002 \u5728.NET\u4e2d\uff0c\u4ee3\u7801\u88ab\u7f16\u8bd1\u4e3a\u4e2d\u95f4\u8bed\u8a00\uff08Intermediate Language\uff0cIL\uff09\uff0cassembly\u4e2d\u5b58\u50a8\u4e86IL\u4ee3\u7801\u3001\u5143\u6570\u636e\u548c\u5176\u5b83\u8d44\u6e90\u6587\u4ef6\u3002\u540c\u4e00\u4e2aassembly\u53ef\u4ee5\u9644\u5c5e\u4e8e\u4e00\u4e2a\u6216\u591a\u4e2aExe/DLL\u3002\u6240\u6709\u7684.NET\u5e93\u90fd\u5b58\u50a8\u5728assembly\u4e2d\u3002
1.7 VB.NET: \u5b8c\u5168\u9762\u5411\u5bf9\u8c61\u7684\u7f16\u7a0b\u8bed\u8a00\u62bd\u8c61\u3001\u5c01\u88c5\u3001\u591a\u6001\u3001\u7ee7\u627f\u662f\u9762\u5411\u5bf9\u8c61\u8bed\u8a00\u7684\u56db\u4e2a\u57fa\u672c\u5c5e\u6027\u3002VB6.0\u4e0d\u652f\u6301\u7ee7\u627f\uff0c\u800cVB.NET\u5219\u4e0d\u7136\u3002\u6240\u4ee5\uff0c\u548cC++\u4e00\u6837\uff0cVB.NET\u4e5f\u662f\u5b8c\u5168\u9762\u5411\u5bf9\u8c61\u7684\u7f16\u7a0b\u8bed\u8a00\u3002
Class \u548c ModuleVB.NET\u7528Class...End Class\u8bed\u53e5\u5bf9\u521b\u5efaclass\u3002\u6bcf\u4e2aVB.NET\u81f3\u5c11\u5305\u62ec\u4e00\u4e2aModule\uff08\u6a21\u5757\uff09\u3002Module\u5728Module\u2026End Module\u8bed\u53e5\u5bf9\u4e2d\u5b9e\u73b0\u3002\u5e94\u7528\u7a0b\u5e8f\u7684\u4e3b\u8981\u6a21\u5757\u662fMain\u65b9\u6cd5\uff0c\u4ea6\u5373\u5e94\u7528\u7a0b\u5e8f\u5165\u53e3\u70b9\u3002
\u548cVB6.0\u76f8\u4f3c\u7684\u5730\u65b9\u662f\uff0c\u90fd\u53ef\u4ee5\u4f7f\u7528Function/Sub\u5173\u952e\u5b57\u5b9a\u4e49\u65b9\u6cd5\u3002\u4e0b\u9762\u7684\u4f8b\u5b50\u663e\u793a\u4e86\u5982\u4f55\u521b\u5efaclass\u3001\u6dfb\u52a0\u65b9\u6cd5\uff0c\u5e76\u4ece\u4e3b\u7a0b\u5e8f\u8c03\u7528\u65b9\u6cd5\uff1a Imports System
Module Module1
Sub Main()
Dim cls As TestClass = New TestClass
Console.WriteLine(cls.MyMethod)
End Sub
Class TestClass
Function MyMethod() As String
Return "Test Method"
End Function
End Class
End ModuleProperty\u5c5e\u6027\uff08Property\uff09\u662f\u7c7b\u53d8\u91cf\u7684\u516c\u5171\u63cf\u8ff0\u3002Property\u2026End Property\u8bed\u53e5\u7528\u4ee5\u521b\u5efaproperty\u3002\u5c5e\u6027\u7684Get/Set\u65b9\u6cd5\u5206\u522b\u7528\u4e8e\u53d6\u5f97\u548c\u8bbe\u7f6e\u5c5e\u6027\u503c\u3002\u4e0b\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cData\u662fTestClass\u7684\u5c5e\u6027\u3002
Imports System
Imports System.Console
Module Module1
Sub Main()
Dim cls As TestClass = New TestClass
WriteLine(cls.MyMethod)
WriteLine(cls.Data)
cls.Data = "New Data"
WriteLine(cls.Data)
End Sub
End Module
Class TestClass
Private strData As String = "Some Data"
Function MyMethod() As String
Return "Test Method!"
End Function
' Adding Data property to the class
Public Property Data() As String
Get
Return strData
End Get
Set(ByVal Value As String)
strData = Value
End Set
End Property
\u91cd\u8f7dVB.NET\u901a\u8fc7overload\u5173\u952e\u5b57\u652f\u6301\u65b9\u6cd5\u91cd\u8f7d\u3002\u4f7f\u7528\u8fd9\u4e2a\u5173\u952e\u5b57\uff0c\u4f60\u53ef\u4ee5\u5b9a\u4e49\u540c\u540d\u4f46\u4e0d\u540c\u53c2\u6570\u7684\u65b9\u6cd5\u3002
\u7c7b\u6210\u5458\u8bbf\u95ee\u57df
\u9664\u4e86\u539f\u6709\u7684Private\u548cPublic\uff0cVB.NET\u5f15\u5165\u4e86\u51e0\u4e2a\u65b0\u5173\u952e\u5b57\u3002\u5168\u90e8\u8bbf\u95ee\u57df\u5173\u952e\u5b57\u5217\u8868\u5982\u4e0b\uff1a
\u5173\u952e\u5b57 \u4f5c\u7528\u57df
Private \u9650\u4e8eclass\u5185\u90e8
Public \u53ef\u4ee5\u4ececlass\u5916\u8bbf\u95ee
Friend \u9650\u4e8eclass\u6240\u5c5e\u7684\u5e94\u7528\u7a0b\u5e8f\u5185
Protected \u53ea\u80fd\u88abclass\u548c\u5176\u6d3e\u751f\u7c7b\u8bbf\u95ee
Protected Friend \u80fd\u88abclass\u3001\u5e94\u7528\u7a0b\u5e8f\u548c\u6d3e\u751f\u7c7b\u8bbf\u95ee
\u7ee7\u627f\u7ee7\u627f\u662f\u9762\u5411\u5bf9\u8c61\u7f16\u7a0b\u8bed\u8a00\u4e2d\u6700\u5e38\u7528\u7684\u6280\u672f\u3002\u7ee7\u627f\u8ba9\u4f60\u80fd\u591f\u91cd\u7528\u7c7b\u4ee3\u7801\u548c\u529f\u80fd\u3002
VB.NET\u652f\u6301\u7ee7\u627f\uff0c\u800cVB6.0\u5219\u4e0d\u652f\u6301\u3002\u7ee7\u627f\u7684\u597d\u5904\u5728\u4e8e\u4f60\u80fd\u4f7f\u7528\u4efb\u4f55\u4eba\u7f16\u5199\u7684\u7c7b\uff0c\u4ece\u8fd9\u4e9b\u7c7b\u6d3e\u751f\u81ea\u5df1\u7684\u7c7b\uff0c\u7136\u540e\u5728\u81ea\u5df1\u7684\u7c7b\u4e2d\u8c03\u7528\u7236\u7c7b\u529f\u80fd\u3002\u5728\u4e0b\u9762\u7684\u4f8b\u5b50\u4e2d\uff0cClass B\u6d3e\u751f\u81eaClass A\uff0c\u6211\u4eec\u5c06\u4eceClass B\u4e2d\u8c03\u7528Class A\u7684\u65b9\u6cd5MethodA\u3002
Imports System
Imports System.Console
Module Module1
Sub Main()
Dim bObj As B = New B
WriteLine(bObj.MethodA())
End Sub
End Module
' Class A defined
Public Class A
Function MethodA() As String
Return "Method A is called."
End Function
End Class
'Class B, inherited from Class A. All members (Public and Protected)
' can be access via B now.
Public Class B
Inherits A
Function MethodB() As String
Return "Method B is called."
End Function
End Class
\u53ef\u4ee5\u4ece\u4e00\u4e2aclass\u4e2d\u6d3e\u751f\u591a\u4e2a\u81ea\u5b9a\u4e49class\uff0c\u4e5f\u53ef\u4ee5\u4ece\u591a\u4e2aclass\u6d3e\u751f\u4e00\u4e2a\u81ea\u5b9a\u4e49class\u3002
\u5171\u4eab\u7684\u6210\u5458\u7c7b\u7684\u5171\u4eab\u6210\u5458\u88ab\u7c7b\u7684\u6240\u6709\u5b9e\u4f53\u5171\u4eab\u3002\u5171\u4eab\u6210\u5458\u53ef\u80fd\u662f\u5c5e\u6027\u3001\u65b9\u6cd5\u6216\u5b57\u6bb5/\u503c\u57df\u3002\u5728\u4f60\u4e0d\u60f3\u8ba9\u7528\u6237\u5168\u9762\u63a7\u5236\u81ea\u5df1\u7684\u7c7b\u65f6\uff0c\u5171\u4eab\u6210\u5458\u76f8\u5f53\u6709\u7528\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u5f00\u53d1\u4e00\u4e2a\u7c7b\u5e93\uff0c\u8ba9\u7528\u6237\u901a\u8fc7\u5171\u4eab\u6210\u5458\u4f7f\u7528\u5176\u4e2d\u7684\u90e8\u5206\u529f\u80fd\u3002
\u53ef\u4ee5\u901a\u8fc7class\u672c\u8eab\u5f15\u7528\u5171\u4eab\u6210\u5458\uff0c\u800c\u65e0\u9700\u901a\u8fc7\u7c7b\u7684\u5b9e\u4f53\u3002\u4f8b\u5982\uff1aModule Module1
Sub Main()
WriteLine(A.MethodA())
End Sub
End Module
' Class A defined
Public Class A
Shared Function MethodA() As String
Return "Method A is called."
End Function
End Class
\u591a\u7ebf\u7a0bVB\u8bed\u8a00\u7684\u4e00\u5927\u5f31\u70b9\u5c31\u662f\u7f3a\u4e4f\u7f16\u5199\u81ea\u7531\u7ebf\u7a0b\uff08free-threaded\uff09\u7a0b\u5e8f\u7684\u80fd\u529b\u3002\u5728.NET Framework\u4e2d\uff0c\u6240\u6709\u8bed\u8a00\u5171\u4eabCRL\uff08Common Runtime Library\uff0c\u516c\u5171\u8fd0\u884c\u5e93\uff09\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u4f60\u53ef\u4ee5\u7528VB.NET\u3001C#\u6216\u5176\u5b83.NET\u8bed\u8a00\u7f16\u5199\u540c\u6837\u7684\u7a0b\u5e8f\u3002
System.Threading namespace\u5b9a\u4e49\u4e86\u7ebf\u7a0b\u7c7b\u3002\u6211\u4eec\u53ea\u9700\u8981\u5f15\u5165System.Threading namespace\uff0c\u5373\u53ef\u4f7f\u7528\u7ebf\u7a0b\u7c7b\u3002
System.Threading.Thread\u7c7b\u63d0\u4f9b\u7ebf\u7a0b\u5bf9\u8c61\uff0c\u53ef\u4ee5\u4f7f\u7528Thread\u7c7b\u521b\u5efa\u6216\u7834\u574f\u7ebf\u7a0b\u3002
\u521b\u5efa\u7ebf\u7a0b\u4f7f\u7528Thread\u7c7b\u7684\u5b9e\u4f53\u521b\u5efa\u4e00\u4e2a\u65b0\u7ebf\u7a0b\uff0c\u7136\u540e\u7528Thread.Start\u65b9\u6cd5\u5f00\u59cb\u6267\u884c\u7ebf\u7a0b\u3002\u7ebf\u7a0b\u6784\u9020\u5668\u63a5\u53d7\u4e00\u4e2a\u53c2\u6570\uff0c\u8be5\u53c2\u6570\u6307\u660e\u4f60\u8981\u5728\u7ebf\u7a0b\u4e2d\u6267\u884c\u7684procedure\u3002\u5728\u4e0b\u4f8b\u4e2d\uff0c\u6211\u60f3\u5728oThread1\uff08Thread\u7c7b\u7684\u4e00\u4e2a\u5b9e\u4f53\uff09\u7684\u7b2c\u4e8c\u7ebf\u7a0b\u4e2d\u6267\u884cSecondThread\u8fc7\u7a0b\uff1a
oThread1 = New Thread(AddressOf SecondThread)
SecondThread procedure looks like below:
Public Sub SecondThread()
Dim i As Integer
For i = 1 To 10
Console.WriteLine(i.ToString())
Next
End Sub
\u7136\u540e\uff0c\u8c03\u7528Thread.Start()\u5f00\u59cb\u7ebf\u7a0b\uff1a
oThread1.Start()
\u4e0b\u9762\u7684\u4ee3\u7801\u521b\u5efa\u4e24\u4e2a\u7b2c\u4e8c\u7ebf\u7a0b\uff1a
Imports System
Imports System.Threading
Module Module1
Public oThread1 As Thread
Public oThread2 As Thread
Sub Main()
oThread1 = New Thread(AddressOf SecondThread)
oThread2 = New Thread(AddressOf ThirdThread)
oThread1.Start()
oThread2.Start()
End Sub
Public Sub SecondThread()
Dim i As Integer
For i = 1 To 10
Console.WriteLine(i.ToString())
Next
End Sub
Public Sub ThirdThread()
Dim i As Integer
For i = 1 To 10
Console.WriteLine("A" + i.ToString())
Next
End Sub
End Module
\u7834\u574f\u7ebf\u7a0b \u8c03\u7528Abort\u65b9\u6cd5\u6765\u7834\u574f\uff08\u4e2d\u6b62\uff09\u4e00\u4e2a\u7ebf\u7a0b\u3002\u5728\u8c03\u7528Abort\u4e4b\u524d\uff0c\u786e\u4fdd\u7528IsAlive\u5224\u65ad\u7ebf\u7a0b\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\u3002
If oThread1.IsAlive Then
oThread1.Abort()
End If
\u6682\u505c\u7ebf\u7a0b\u53ef\u4ee5\u4f7f\u7528Sleep\u65b9\u6cd5\u6765\u6682\u505c\u7ebf\u7a0b\u6267\u884c\u3002Sleep\u65b9\u6cd5\u63a5\u53d7\u4e00\u4e2a\u4ee5\u6beb\u79d2\u4e3a\u5355\u4f4d\u7684\u53c2\u6570\uff0c\u6307\u660e\u7ebf\u7a0b\u5e94\u5f53\u6682\u505c\u591a\u957f\u65f6\u95f4\u3002
\u4e0b\u9762\u7684\u4f8b\u5b50\u8ba9\u7ebf\u7a0b\u6682\u505c1\u79d2\u949f\uff1a
oThread2.Sleep(1000)\u4f60\u4e5f\u53ef\u4ee5\u4f7f\u7528Suspend\u548cResume\u65b9\u6cd5\u6765\u6302\u8d77\u548c\u7ee7\u7eed\u7ebf\u7a0b\u6267\u884c\u3002
\u8bbe\u5b9a\u7ebf\u7a0b\u4f18\u5148\u7ea7Thread\u7c7b\u7684Priority\u5c5e\u6027\u7528\u4e8e\u8bbe\u5b9a\u7ebf\u7a0b\u4f18\u5148\u7ea7\u3002\u8be5\u5c5e\u6027\u53ef\u4ee5\u8bbe\u7f6e\u4e3aNormal\uff0cAboveNormal\uff0cBelowNormal\uff0cHighest\u548cLowest\u3002\u5982\uff1a
oThread2.Priority = ThreadPriority.Highest\u7ebf\u7a0b\u4e0eApartment\u4f7f\u7528ApartmentState\u5c5e\u6027\u8bbe\u7f6e\u7ebf\u7a0b\u7684apartment\u7c7b\u578b\uff0c\u8be5\u5c5e\u6027\u503c\u53ef\u4ee5\u4e3aSTA\uff0cMTA\u6216\u662fUnknown[][2]\uff1a
oThread.ApartmentState = ApartmentState.MTAMTS\u610f\u5473\u7740\u53ef\u4ee5\u4f7f\u7528\u591a\u7ebf\u7a0b\u6a21\u5f0f\uff0c\u800cSTA\u5219\u53ea\u80fd\u662f\u5355\u7ebf\u7a0b\u6267\u884c\u3002
Public Enum ApartmentState
{
STA = 0,
MTA = 1,
Unknown = 2,
}
1.8 \u7ed3\u6784\u5316\u5f02\u5e38\u5904\u7406\u5f02\u5e38\u5904\u7406\u4e5f\u88ab\u79f0\u4e4b\u4e3a\u9519\u8bef\u5904\u7406\u3002\u4f5c\u4e3aVB\u7a0b\u5e8f\u5458\uff0c\u4f60\u4e00\u5b9a\u5bf9On Error Goto\u548cOn Error Resume Next\u8fd9\u4e9bVB6.0\u9519\u8bef\u5904\u7406\u8bed\u53e5\u8033\u719f\u80fd\u8be6\u3002\u8fd9\u79cd\u7c7b\u578b\u7684\u9519\u8bef\u5904\u7406\u88ab\u79f0\u4e3a\u975e\u7ed3\u6784\u5316\u5f02\u5e38\u5904\u7406\uff08Unstructured Exception Handling\uff09\u3002\u800c\u5728VB.NET\u4e2d\uff0cMicrosoft\u63a8\u51fa\u4e86\u7ed3\u6784\u5316\u5f02\u5e38\u5904\u7406\u673a\u5236\u3002VB.NET\u652f\u6301\u7c7b\u4f3cC++\u7684TryCatch..Finally\u63a7\u5236\u3002Try..Catch..Finally\u7ed3\u6784\u5982\u4e0b\uff1a Try
' \u53ef\u80fd\u5bfc\u81f4\u5f02\u5e38\u7684\u4ee3\u7801
Catch
' \u5f53\u5f02\u5e38\u53d1\u751f\u65f6\u5904\u7406\u5f02\u5e38\u7684\u4ee3\u7801
Finally
' \u6e05\u7406\u73b0\u573a
End Try
Try\u8bed\u53e5\u5757\u7528\u4ee5\u629b\u51fa\u5f02\u5e38\u3002\u5982\u679c\u5f02\u5e38\u53d1\u751f\uff0c\u5728Catch\u8bed\u53e5\u5757\u4e2d\u5904\u7406\u3002Finally\u8bed\u53e5\u5757\u662f\u53ef\u9009\u7684\uff0c\u5728\u9700\u8981\u91ca\u653e\u8d44\u6e90\u65f6\u7279\u522b\u6709\u7528\u3002
1.9 VB6.0\u4e0eVB.NET\u7684\u4e0d\u540c\u4e4b\u5904\u9664\u4e86\u4e0a\u9762\u8c08\u5230\u7684\u8bed\u8a00\u8fdb\u5316\uff0c\u8fd8\u6709\u4e00\u4e9b\u8bed\u6cd5\u4e0a\u7684\u53d8\u5316\u3002\u6240\u6709\u8fd9\u4e9b\u8bed\u8a00\u548c\u8bed\u6cd5\u7684\u53d8\u5316\u5728MSDN\u4e2d\u5747\u53ef\u67e5\u5230\uff0c\u672c\u6587\u53ea\u4f5c\u7b80\u5355\u4ecb\u7ecd\u3002
\u6570\u636e\u7c7b\u578b\uff08Data Type\uff09\u7684\u6539\u53d8VB.NET\u4e2d\u6709\u4e9b\u6570\u636e\u7c7b\u578b\u5f97\u5230\u6539\u8fdb\u3002\u4e0b\u9762\u662f\u53d8\u5316\u5bf9\u7167\u8868\u3002
\u6570\u636e\u7c7b\u578b VB6.0 VB.NET
Integer 16 bit size 32 bit size
Long 32 bit size 64 bit size
Currency \u7528\u4e8e\u5b58\u50a8\u5927\u6d6e\u70b9\u6570 \u88abdecimal\u66ff\u4ee3\uff0c\u652f\u6301\u66f4\u9ad8\u7cbe\u5ea6
Variant \u53ef\u4ee5\u5b58\u50a8\u4efb\u610f\u7c7b\u578b\u6570\u636e \u88abObject\u7c7b\u578b\u66ff\u4ee3\uff0c\u4e5f\u53ef\u4ee5\u5b58\u50a8\u4efb\u610f\u7c7b\u578b\u6570\u636e\uff0c\u4f46\u7ed3\u679c\u66f4\u597d
Date Date\u7c7b\u578b\u88ab\u5b58\u50a8\u4e3adouble \u5f15\u5165DateTime\u7c7b\u578b\uff0c\u7528\u4e8e\u5b58\u50a8\u4e0d\u540c\u683c\u5f0f\u7684\u65e5\u671f
\u5728VB.NET\u4e2d\uff0cShort\u6570\u636e\u7c7b\u578b\u662f16 bit\u7684\u3002Short\uff0cInteger\u548cLong\u90fd\u7b49\u540c\u4e8eCLR\u7684System.Int16\u3001System.Int32\u548cSystem.Int64\u7c7b\u578b\u3002 \u53d8\u91cf\u58f0\u660e\u7684\u53d8\u5316\u5728VB6.0\u4e2d\uff0c\u53d8\u91cf\u58f0\u660e\u6709\u8bb8\u591a\u9650\u5236\u3002\u5176\u4e2d\u4e4b\u4e00\u5c31\u662f\u4e0d\u80fd\u540c\u884c\u58f0\u660e\u591a\u4e2a\u53d8\u91cf\u3002\u5982\u679c\u4e00\u5b9a\u8981\u5728\u4e00\u884c\u4e2d\u58f0\u660e\u591a\u4e2a\u53d8\u91cf\uff0c\u5c31\u4e00\u5b9a\u5f97\u6307\u660e\u6bcf\u4e2a\u53d8\u91cf\u7684\u7c7b\u578b\uff0c\u5426\u5219\u5c06\u88ab\u9ed8\u8ba4\u4e3aVariant\u7c7b\u578b\u3002
Dim a1, a2 As Integer Dim a3 As Integer, a4 As Integer \u7b2c\u4e00\u884c\u4e2d\u7684a1\u662fVariant\u7c7b\u578b\uff0ca2\u662fInteger\u7c7b\u578b\u3002\u7b2c\u4e8c\u884c\u4e2d\u4e24\u4e2a\u53d8\u91cf\u90fd\u662fInteger\u7c7b\u578b\u3002VB.NET\u652f\u6301\u540c\u884c\u58f0\u660e\u591a\u4e2a\u53d8\u91cf\uff0c\u4e3e\u4f8b\u5982\u4e0b\uff1a
Dim a1, a2, a3 As Integer \u53d8\u91cf\u521d\u59cb\u5316\u662f\u53e6\u4e00\u4e2a\u95ee\u9898\u3002\u5728VB6.0\u4e2d\u4e0d\u80fd\u540c\u65f6\u58f0\u660e\u548c\u521d\u59cb\u5316\u53d8\u91cf\uff0c\u800cVB.NET\u5219\u652f\u6301\u8fd9\u4e2a\u7279\u6027\u3002
Dim name As String = "Mahesh"System.Console.Write(name) \u58f0\u660e\u5e38\u91cf\u4e5f\u53ef\u4ee5\u7167\u6b64\u529e\u7406\uff1aConst DT_COUNT As Integer = 23 New\u5173\u952e\u5b57\u3002\u5728VB.NET\u4e2d\uff0cNew\u5173\u952e\u5b57\u7528\u4e8e\u521b\u5efa\u5bf9\u8c61\u3002\u7531\u4e8e\u6570\u636e\u7c7b\u578b\u662f\u5bf9\u8c61\uff0c\u6240\u4ee5New\u5173\u952e\u5b57\u7528\u4ee5\u521b\u5efa\u4e00\u4e2a\u6570\u636e\u7c7b\u578b\u5bf9\u8c61\u3002
Dim i As Integer = New Integer()i = 10System.Console.WriteLine(i.ToString()) \u4ee3\u7801\u5757\u7ea7\u522b\u652f\u6301\u3002\u50cfC++\u4e00\u6837\uff0cVB.NET\u652f\u6301\u4ee3\u7801\u5757\u7ea7\u522b\u7684\u4f5c\u7528\u57df\u68c0\u67e5\u3002\u5728\u8bed\u53e5\u5757\u4e2d\u58f0\u660e\u7684\u53d8\u91cf\u53ea\u5728\u5757\u5185\u6709\u6548\u3002
For i = 1 To 10Dim p As LongSystem.Console.WriteLine(i.ToString())NextSystem.Console.WriteLine(p.ToString()) \u8fd9\u6bb5\u4ee3\u7801\u5728VB.NET\u4e2d\u4f1a\u5f97\u5230\u4e00\u4e2a\u7f16\u8bd1\u9519\u8bef\uff0c\u56e0\u4e3ap\u5728For..Next\u8bed\u53e5\u5757\u4e4b\u5916\u4e0d\u53ef\u8bbf\u95ee\u3002\u5728VB6.0\u4e2d\u8fd9\u6bb5\u4ee3\u7801\u53ef\u4ee5\u901a\u8fc7\u3002
\u6539\u8fdb\u4e86\u7684\u7c7b\u578b\u5b89\u5168
\u5728VB6.0\u4e2d\uff0c\u5f53\u4f60\u58f0\u660e\u4e00\u4e2a\u5bf9\u5916\u90e8\u8fc7\u7a0b\u7684\u5f15\u7528\u65f6\uff0c\u53ef\u4ee5\u6307\u5b9a\u4efb\u610f\u7c7b\u578b\u7684\u53c2\u6570\u4e3aAs Any\u3002Any\u5173\u952e\u5b57\u7981\u6b62\u4e86\u7c7b\u578b\u68c0\u67e5\uff0c\u5141\u8bb8\u4efb\u610f\u6570\u636e\u7c7b\u578b\u4f20\u5165\u548c\u8fd4\u56de\u3002
VB.NET\u4e0d\u652f\u6301Any\u5173\u952e\u5b57\u3002\u4f60\u5fc5\u987b\u6307\u5b9a\u6bcf\u4e2a\u53c2\u6570\u548c\u8fd4\u56de\u503c\u7684\u6570\u636e\u7c7b\u578b\u3002\u6570\u7ec4VB.NET\u5bf9\u6570\u7ec4\u4f5c\u4e86\u660e\u663e\u7684\u6539\u52a8\u3002
\u6570\u7ec4\u8303\u56f4\u3002\u5728VB.NET\u4e2d\uff0c\u4f60\u9700\u8981\u683c\u5916\u7559\u610f\u6570\u7ec4\u8303\u56f4\u95ee\u9898\u3002VB6.0\u9ed8\u8ba4\u6570\u7ec4\u4e0b\u754c\u4e3a0\uff0c\u6545\u6570\u7ec4\u4e2d\u7684\u5143\u7d20\u6570\u91cf\u7b49\u4e0e\u6570\u7ec4\u4e0a\u754c\u503c\u52a0\u4e00\u3002\u4e0b\u9762\u7684\u6570\u7ec4\u754c\u9650\u4eceA(0)\u5230A(10)\uff0c\u5171\u670911\u4e2a\u5143\u7d20\uff1a
Dim A(10) As Single\u53ef\u4ee5\u4f7f\u7528Option Base\u6539\u53d8\u4e0b\u754c\u503c\u4e3a1\u3002\u5728VB.NET\u4e2d\uff0c\u6570\u7ec4\u548cC++\u4e00\u6837\uff0c\u4e0b\u754c\u503c\u4e3a0\uff0c\u4e0d\u652f\u6301Option Base\u3002\u6ce8\u610f\uff1aMSDN\u6587\u6863\u6307\u51fa\u6570\u7ec4\u53ea\u80fd\u5305\u62ec\u4e0e\u5176\u5c3a\u5bf8\u76f8\u7b49\u7684\u5143\u7d20\u6570\u91cf\uff0c\u4f8b\u5982\uff1aDim A(10) As Integer \u53ea\u80fd\u5305\u62ec10\u4e2a\u5143\u7d20\uff08\u4eceA(0)\u5230A(9)\uff09\uff0c\u4f46\u5728\u7f16\u8bd1\u4e0b\u9762\u8fd9\u6bb5\u4ee3\u7801\u65f6\u6211\u53d1\u73b0\u5b83\u8fd0\u884c\u826f\u597d\uff0c\u770b\u8d77\u6765\u6570\u7ec4\u4e2d\u5bb9\u7eb3\u4e8611\u4e2a\u5143\u7d20\u3002
Dim A(10) As Integer A(0) = 12 A(2) = 24 A(10) = 23 System.Console.WriteLine(A(0).ToString()) System.Console.WriteLine(A(10).ToString())System.Console.WriteLine(UBound(A).ToString()) System.Console.WriteLine(LBound(A).ToString()) Lbound\u548cUbound\u5206\u522b\u8fd4\u56de 0\u4e0e10\u3002ReDim\u548cFixed Array\u3002\u4f60\u53ef\u4ee5\u5728VB6.0\u4e2d\u6307\u5b9a\u56fa\u5b9a\u957f\u5ea6\u7684\u6570\u7ec4\u3002
Dim ArrWeekDays(0 To 6) As Integer
\u8fd9\u91cc\u7684ArrWeekDays\u6570\u7ec4\u662f\u56fa\u5b9a\u957f\u5ea6\u7684\uff0c\u4e0d\u80fd\u7528ReDim\u8bed\u53e5\u6539\u53d8\u957f\u5ea6\u3002VB.NET\u4e0d\u652f\u6301\u56fa\u5b9a\u957f\u5ea6\u6570\u7ec4\uff0c\u6240\u4ee5ReDim\u603b\u662f\u6709\u6548\u3002
\u53ef\u4ee5\u7528\u4e0b\u9762\u4e24\u79cd\u65b9\u5f0f\u58f0\u660e\u6570\u7ec4\uff1a Dim ArrWeekDays(6) As IntegerDim ArrWeekDays() As Integer = {1, 2, 3, 4, 5, 6} ReDim\u8bed\u53e5\u3002\u5728VB6.0\u4e2d\uff0cReDim\u7528\u4e8e\u521d\u59cb\u5316\u52a8\u6001\u6570\u7ec4\u3002\u5728VB.NET\u4e2d\u4f60\u4e0d\u80fd\u628a\u5b83\u5f53\u4f5c\u58f0\u660e\u7528\u3002ReDim\u53ea\u80fd\u7528\u4e8e\u6539\u53d8\u6570\u7ec4\u957f\u5ea6\uff0c\u4e0d\u8fc7\u4e0d\u80fd\u6539\u53d8\u6570\u7ec4\u7ef4\u5ea6\u3002
Variant\u5bf9\u9635ObjectVB6.0\u4e2d\u7684Variant\u6570\u636e\u7c7b\u578b\u80fd\u5b58\u50a8\u4efb\u610f\u7c7b\u578b\u53d8\u91cf\uff0cVB.NET\u4e2dObject\u5177\u5907\u76f8\u540c\u80fd\u529b\u3002
\u7b97\u672f\u64cd\u4f5c\u7b26VB.NET\u652f\u6301\u7c7b\u4f3cC++\u7684\u5feb\u6377\u65b9\u5f0f\u3002\u4e0b\u9762\u7684\u8868\u683c\u663e\u793a\u4e86\u5e38\u89c4\u64cd\u4f5c\u4e0e\u5feb\u6377\u64cd\u4f5c\u7684\u4e0d\u540c\u4e4b\u5904\u3002\u5feb\u6377\u65b9\u5f0f\u4e5f\u53ef\u7528\u4e8e*\u3001/\u3001|\u3001&\u7b49\u64cd\u4f5c\u7b26\u3002
\u64cd\u4f5c\u7b26 \u5e38\u89c4\u8bed\u6cd5 \u5feb\u6377\u65b9\u5f0f\u52a0\u6cd5 A = A+5 A +=5 \u51cf\u6cd5 A = A \u2013 5 A -+ 5\u56fa\u5b9a\u957f\u5ea6\u5b57\u7b26\u4e32
\u5728VB6.0\u4e2d\uff0c\u53ef\u4ee5\u5728\u58f0\u660e\u5b57\u7b26\u4e32\u65f6\u6307\u5b9a\u5176\u957f\u5ea6\u3002VB.NET\u4e0d\u652f\u6301\u56fa\u5b9a\u957f\u5ea6\u5b57\u7b26\u4e32\u3002
\u5e03\u5c14\u64cd\u4f5c\u7b26VB6.0\u4e2d\u7684And\u3001Or\u6216\u662fXor\u8bed\u53e5\u662f\u6309\u4f4d\u64cd\u4f5c\u7b26\u3002\u800c\u5728VB.NET\u4e2d\uff0c\u5b83\u4eec\u662f\u5e03\u5c14\u64cd\u4f5c\u7b26\u3002\u6267\u884c\u8fd9\u4e9b\u64cd\u4f5c\u5c06\u8fd4\u56detrue\u6216false\u3002VB.NET\u5f15\u5165\u65b0\u64cd\u4f5c\u7b26\u6765\u5b8c\u6210\u6309\u4f4d\u64cd\u4f5c\u3002
\u64cd\u4f5c\u7b26 \u63cf\u8ff0 BitAnd \u6309\u4f4dAndBitOr \u6309\u4f4dOrBitXor \u6309\u4f4dXorBitNot \u6309\u4f4dNot\u7ed3\u6784\u4e0e\u81ea\u5b9a\u4e49\u7c7b\u578b\u5728VB6.0\u4e2d\uff0c\u4f60\u4f7f\u7528Type\u2026End Type\u8bed\u53e5\u5757\u521b\u5efa\u7ed3\u6784\u6216\u81ea\u5b9a\u4e49\u7c7b\u578b\u3002\u4f8b\u5982\uff1a
Type StdRec
StdId As Integer
StdName As String End Type
VB.NET\u5f15\u5165\u65b0\u7684\u8bed\u6cd5\uff1aStructure\u3002Type\u2026End Type\u4e0d\u518d\u88ab\u652f\u6301\u3002Structure\u2026End Structure\u4e0eC++\u7528\u6cd5\u76f8\u540c\u3002\u53ef\u4ee5\u6307\u5b9a\u7ed3\u6784\u4e2d\u6bcf\u4e2a\u5143\u7d20\u7684\u53ef\u8bbf\u95ee\u57df\uff0c\u5982Public\u3001Protected\u3001Friend\u3001Protected Friend\u3001Private\u7b49\u3002\u4f8b\u5982\uff1a
Structure StdRec
Public StdId As Integer Public StdName As String
Private StdInternal As String End StructureVB.NET\u4e2d\u7684Structures\u5c31\u50cf\u7c7b\u4e00\u6837\uff0c\u4e5f\u53ef\u4ee5\u62e5\u6709\u65b9\u6cd5\u548c\u5c5e\u6027\u3002New\u548cNothing\u5173\u952e\u5b57VB6.0\u4e2d\uff0cAS New\u548cNothing\u5173\u952e\u5b57\u7528\u4e8e\u58f0\u660e\u4e00\u4e2a\u5bf9\u8c61\u5e76\u521d\u59cb\u5316\u5b83\u3002 VB.NET\u4e0d\u652f\u6301\u9690\u5f0f\u521b\u5efa\u5bf9\u8c61\u3002\u5982\u524d\u6240\u8a00\uff0c\u751a\u81f3\u8fde\u6570\u636e\u7c7b\u578b\u90fd\u662f\u5bf9\u8c61\u3002\u4f60\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\u521b\u5efa\u6570\u636e\u7c7b\u578b\u6216\u5bf9\u8c61\uff1a Dim i As Integer Dim i As Integer = New Integer() // Do something if i = Nothing Then End If \u4e0d\u652f\u6301Set\u8bed\u53e5VB6.0\u4f7f\u7528Set\u8bed\u53e5\u6307\u6d3e\u5bf9\u8c61\u3002\u4f8b\u5982\uff1aSet myObj = new MyObjectSet a = b\u5728VB.NET\u4e2d\uff0c\u4e0d\u9700\u8981\u4f7f\u7528Set\u6307\u6d3e\u5bf9\u8c61\u3002\u4f8b\u5982\uff1amyObj = new MyObj()a = b\u8fc7\u7a0b\uff08procedure\uff09\u8bed\u6cd5\u7684\u53d8\u5316\u5728VB.NET\u4e2d\u8fc7\u7a0b\u8bed\u6cd5\u6709\u4e86\u5f88\u591a\u53d8\u5316\u3002\u4f8b\u5982\u7c7b\u4f3cC++\u7684\u8fc7\u7a0b\u8c03\u7528\u65b9\u5f0f\u3001ByVal\uff08\u4f20\u503c\uff09\u4e3a\u9ed8\u8ba4\u7c7b\u578b\u3001Optional\u5173\u952e\u5b57\u3001return\u8bed\u53e5\u7b49\u7b49\u3002\u7c7b\u4f3cC++\u7684\u8fc7\u7a0b\u8c03\u7528\u65b9\u5f0f VB6.0\u5141\u8bb8\u4e0d\u7528\u52a0\u5706\u62ec\u53f7\u8c03\u7528\u8fc7\u7a0b\uff08sub\uff09\u3002\u4e0d\u8fc7\uff0c\u7528Call\u8bed\u53e5\u8c03\u7528\u51fd\u6570\u6216sub\u65f6\uff0c\u4e00\u5b9a\u8981\u4f7f\u7528\u5706\u62ec\u53f7\u3002\u4f8b\u5982\uff1aDim I as IntegerCall EvaluateData(2, i) EvaluateData 2, i \u5728VB.NET\u4e2d\uff0c\u6240\u6709\u7684\u65b9\u6cd5\u8c03\u7528\u90fd\u9700\u8981\u5706\u62ec\u53f7\uff0c\u800cCall\u8bed\u53e5\u5219\u662f\u53ef\u9009\u7684\u3002 ByVal\u662f\u9ed8\u8ba4\u53c2\u6570\u7c7b\u578b\u5728VB6.0\u4e2d\uff0c\u5728\u8c03\u7528\u51fd\u6570\u6216sub\u65f6ByRef\uff08\u4f20\u5740\uff09\u662f\u9ed8\u8ba4\u7c7b\u578b\u3002\u90a3\u610f\u5473\u7740\u6240\u6709\u6539\u53d8\u5c06\u53cd\u6620\u5230\u4f20\u5165\u7684\u53d8\u91cf\u3002VB.NET\u6539\u53d8\u4e86\u8fd9\u79cd\u65b9\u5f0f\u3002\u73b0\u5728\uff0c\u9ed8\u8ba4\u7684\u53c2\u6570\u7c7b\u578b\u662fByVal\uff08\u4f20\u503c\uff09\u3002 Optional\u5173\u952e\u5b57VB6.0\u4f7f\u7528Optional\u5173\u952e\u5b57\u53ef\u7528\u6765\u8ba9\u7528\u6237\u51b3\u5b9a\u4f20\u5165\u4e00\u4e2a\u9ed8\u8ba4\u503c\uff0c\u4e4b\u540e\u5728\u8c03\u7528IsMissing\u51fd\u6570\u5224\u65ad\u53c2\u6570\u662f\u5426\u6709\u6548\u3002 \u800c\u5728VB.NET\u4e2d\uff0c\u6bcf\u4e2a\u53ef\u9009\u53c2\u6570\u5fc5\u987b\u58f0\u660e\u5176\u9ed8\u8ba4\u503c\uff0c\u65e0\u9700\u8c03\u7528IsMissing\u51fd\u6570\u3002\u4f8b\u5982\uff1aSub MyMethod(Optional ByVal i As Integer = 3)
Return\u8bed\u53e5VB.NET\u7684Return\u8bed\u53e5\u4e0eC++\u76f8\u4f3c\u3002\u4f7f\u7528Return\u8bed\u53e5\u628a\u63a7\u5236\u6743\u4ece\u8fc7\u7a0b\u8fd4\u8fd8\u7ed9\u8c03\u7528\u8005\u3002\u5728VB6.0\u4e2d\uff0cReturn\u8bed\u53e5\u4e0eGoSub\u8bed\u53e5\u4e00\u8d77\u4f7f\u7528\u3002VB.NET\u4e0d\u518d\u652f\u6301GoSub\u8bed\u53e5\u3002\u6d41\u7a0b\u63a7\u5236\u7684\u6539\u53d8\u4e0b\u9762\u662fVB.NET\u5bf9\u6d41\u7a0b\u63a7\u5236\u8bed\u53e5\u7684\u4fee\u6539\uff1a1. GoSub\u4e0d\u518d\u53d7\u5230\u652f\u6301\u30022. Call\u3001Function\u548cSub\u8bed\u53e5\u5747\u53ef\u7528\u4e8e\u8c03\u7528\u8fc7\u7a0b\u30023. On ... GoSub\u548cOn ... GoTo\u8bed\u53e5\u4e0d\u518d\u53d7\u652f\u6301\u3002\u53ef\u4ee5\u4f7f\u7528Select Case\u8bed\u53e5\u6765\u66ff\u4ee3\u30024. While ... Wend\u8bed\u53e5\u73b0\u5728\u6539\u4e3aWhile\u2026End While\u8bed\u53e5\u3002\u4e0d\u518d\u652f\u6301Wend\u5173\u952e\u5b57\u3002\u5c0f\u7ed3 Visual Basic .NET\u662f.NET\u7248\u672c\u7684Visual Basic\uff0c\u5df2\u7ecf\u4ece\u6839\u672c\u53d1\u751f\u4e86\u53d8\u5316\uff01\u901a\u8fc7\u672c\u6587\u4f60\u4e86\u89e3\u5230VB6.0\u548cVB.NET\u7684\u533a\u522b\u662f\u5f88\u5927\u7684\uff0c\u53ef\u4ee5\u8bf4\u6839\u672c\u5c31\u662f\u4e24\u79cd\u4e0d\u540c\u7684\u8bed\u8a00\uff0c\u56e0\u4e3a\u5b83\u4eec\u7684\u5185\u6838\u53d1\u751f\u4e86\u53d8\u5316\uff0cVB6.0\u662f\u57fa\u4e8eCOM\u800cvb.net\u662f\u57fa\u4e8e.net\u6846\u67b6\u7684\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u53d8\u5316\uff0c\u6240\u4ee5\u5728\u6784\u9020\u7c7b\u65f6\u4e5f\u53d1\u751f\u4e86\u6839\u672c\u6027\u7684\u53d8\u5316\u3002
\u6211\u89c9\u5f97\u533a\u522b\u633a\u5927\u7684\uff0c\u5f88\u591a\u51fd\u6570\u4ec0\u4e48\u7684\u540d\u5b57\u90fd\u6539\u53d8\u4e86\u3002\u3002\u3002\u3002\u3002\u3002
\u5e0c\u671b\u91c7\u7eb3
大部分语法相同,有些方法不一样大不大我也不知道怎么说,反正都是VB,差不了多少
不大
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