Obtain the local IP address of the local machine.

The specific method is as follows:

Private void btnChenk_Click (object sender, System. EventArgs e)
{
System. Net. IPAddress [] addressList = Dns. GetHostByName (Dns. GetHostName (). AddressList;
If (addressList. Length> 1)
{
NativeIP. Text = addressList [0]. ToString ();
ServerIP. Text = addressList [1]. ToString ();
}
Else
{
NativeIP. Text = addressList [0]. ToString ();
ServerIP. Text = "Break the line ...";
}

}

Generally, the list obtained by addressList [] is the current IP address;

AddressList [0]. ToString () is

Local IP address; addressList [1]. ToString () is the Internet address.

If [EnterNet 300] is used for dial-up Internet access, addressList [1]. ToString ()

Is the local IP address; addressList [0]. ToString () is the Internet address.

If the program detects only one IP address

The computer is not online!