private void Form2_Load(object sender, EventArgs e)
        {
            listBox1.Items.Clear();
            SQLDMO.Application SQLServer = new SQLDMO.Application();
            SQLDMO.NameList strServer = SQLServer.ListAvailableSQLServers();
            if (strServer.Count > 0)
            {
                for (int i = 0; i < strServer.Count; i++)
                {
                    listBox1.Items.Add(strServer.Item(i + 1));
                }
            }
        }