C # detects the connection status of a network

X

1. Method definition

[DllImport ("Wininet.dll")]

private extern static bool InternetGetConnectedState (out int connectiondescription, int reservedvalue);

2. Method description

Parameters:

Connectiondescription: Connection Description

Reservedvalue: Reserved values

return value:

True:on Line

False:off Line

3. Calling methods

A. You must refer to System.Runtime.InteropServices in your code, otherwise there will be a compilation error

B. Define a variable int I = 0;

C. invoke bool state = InternetGetConnectedState (out i,0);

Complete code:

　　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;
　　}
　　}
　　}

With this stone of diligence, fill the gap of ability!