#region 采用Socket方式，測(cè)試服務(wù)器連接 
/// <summary> 
/// 采用Socket方式，測(cè)試服務(wù)器連接 
/// </summary> 
/// <param name="host">服務(wù)器主機(jī)名或IP</param> 
/// <param name="port">端口號(hào)</param> 
/// <param name="millisecondsTimeout">等待時(shí)間：毫秒</param> 
/// <returns></returns> 
public static bool TestConnection(string host, int port, int millisecondsTimeout) 
{ 
  TcpClient client = new TcpClient(); 
  try 
  { 
   var ar = client.BeginConnect(host, port, null, null); 
   ar.AsyncWaitHandle.WaitOne(millisecondsTimeout); 
   return client.Connected; 
  } 
  catch (Exception e) 
  { 
   throw e; 
  } 
  finally 
  { 
   client.Close(); 
  } 
} 
#endregion

/// <summary> 
/// 數(shù)據(jù)庫(kù)連接操作，可替換為你自己的程序 
/// </summary> 
/// <param name="ConnectionString">連接字符串</param> 
/// <returns></returns> 
private static bool TestConnection(string ConnectionString) 
{ 
  bool result = true; 
  try 
  { 
   SqlConnection m_myConnection = new SqlConnection(ConnectionString); 
   m_myConnection.Open(); 
   //數(shù)據(jù)庫(kù)操作...... 
   m_myConnection.Close(); 
  } 
  catch (Exception ex) 
  { 
   System.Diagnostics.Debug.WriteLine(ex.ToString()); 
   result = false; 
  } 
  return result; 
}

private void btnSocket_Click(object sender, EventArgs e) 
{ 
  string strCon = "Data Source=192.168.24.566;Initial Catalog=qmaster;User ID=sa;password=123456"; 
  string[] s=strCon.Split(';'); 
  s = s[0].Split('='); 
  //獲取IP 
  string strIP =s[1]; 
  //發(fā)送數(shù)據(jù)，判斷是否連接到指定ip 
  if (TestConnection(strIP , 1433, 500)) 
  { 
   //連接成功 
   MessageBox.Show("Socket Link Succeed","連接服務(wù)器"); 
   // 數(shù)據(jù)庫(kù)操作，我這里用了連接測(cè)試。可根據(jù)你的系統(tǒng)自行修改 
   if (TestConnection(strCon)) 
    MessageBox.Show("Sql Link Succeed","連接數(shù)據(jù)庫(kù)"); 
   else 
    MessageBox.Show("Sql Link Failed", "連接數(shù)據(jù)庫(kù)"); 
  } 
  else 
   MessageBox.Show("Socket Link Failed","連接服務(wù)器"); 
}