C# 判断本机是否连接网络

C# 判断本机是否连接网络

功能代码

#region 判断本机是否联网

/// <summary>
/// 判断本机是否连接网络
/// </summary>
/// <param name="conState">联网方式</param>
/// <param name="reder">0</param>
/// <returns></returns>
[DllImport("wininet.dll", EntryPoint = "InternetGetConnectedState")]
private static extern bool InternetGetConnectedState(out int conState, int reder);

#endregion

示例代码

int s;
if (!InternetGetConnectedState(out s, 0))
{
    toolStripStatusLabel_Status.Text = @"未联网";
    timer.Start();
}