如何去检测网络的连接状态(C#)

1. 方法定义

[DllImport("wininet.dll")]

private extern static bool InternetGetConnectedState( out int connectionDescription, int reservedValue ) ;

2. 方法说明

参数 :

connectionDescription : 连接说明

reservedValue : 保留值

返回值 :

true: On Line

false: Off Line

3. 调用方法

a. 你必须在你的 code 里引用 System.Runtime.InteropServices, 否则 , 会有编译错误

b. 定义一个变量 int I = 0;

c. 调用 bool state = InternetGetConnectedState(out I,0);

完整的代码 :

using System.Runtime.InteropServices;

namespace internet

{

public class Class1

{

[DllImport("wininet.dll")]

private extern static bool InternetGetConnectedState( out int connectionDescription, int reservedValue ) ;

public Class1(){}

private bool IsConnected()

{

int I=0;

bool state = InternetGetConnectedState( out I,0);

return state;

}

}

}


Published At
Categories with Web编程
Tagged with
comments powered by Disqus