检查不可用的网络共享时防止超时 - C#

using System.Net.NetworkInformation;

private bool IsNetworkShareAvailable(string sharePath)
{
    string[] parts = sharePath.Split('\\');
    string server = parts[0];
    Ping ping = new Ping();
    PingReply reply = ping.Send(server);
    return reply.Status == IPStatus.Success;
}

using System.Net.Sockets;

private bool IsNetworkShareAvailable(string sharePath)
{
    string[] parts = sharePath.Split('\\');
    string server = parts[0];
    int port = 445; // SMB port
    TcpClient client = new TcpClient();
    try
    {
        client.Connect(server, port);
        return client.Connected;
    }
    catch
    {
        return false;
    }
    finally
    {
        client.Close();
    }
}

using System.Management;

private bool IsNetworkShareAvailable(string sharePath)
{
    string[] parts = sharePath.Split('\\');
    string server = parts[0];
    string shareName = parts[1];
    string query = string.Format("SELECT * FROM Win32_Share WHERE Name='{0}' AND Path='{1}'", shareName, sharePath);
    ManagementObjectSearcher searcher = new ManagementObjectSearcher(query);
    ManagementObjectCollection shares = searcher.Get();
    return shares.Count > 0;
}

using System.IO;

private bool IsNetworkShareAvailable(string sharePath)
{
    try
    {
        Directory.GetFiles(sharePath);
        return true;
    }
    catch
    {
        return false;
    }
}