private void btnOk_Click(object sender, EventArgs e)

        {

            IList<string> _DataBaseList = new List<string>();

            System.ServiceProcess.ServiceController sc = new System.ServiceProcess.ServiceController();

            sc.ServiceName = "MSSQLSERVER";

            if (sc == null)

            {

                MessageBox.Show("您的机器上没有安装SQL SERVER！", "提示信息");

                return;

            }

            else if (sc.Status != System.ServiceProcess.ServiceControllerStatus.Running)

            {

                MessageBox.Show("SQL数据库服务未启动，请点击开启SQL服务！", "提示信息");

                return;

            }

            //_DBConfig = new DBConfig();

            if (cboServerName.Text == "Local(本机)")

            {

                _DBConfig.ServerName = "(local)";

            }

            else

            {

                _DBConfig.ServerName = cboServerName.Text.ToString();

            }

            if (cboValidataType.Text == "Windows身份认证")

            {

                _DBConfig.ValidataType = "Windows身份认证";

            }

            else

            {

                txtPassword.Enabled = true;

                txtUser.Enabled = true;

                _DBConfig.ValidataType = "SQL Server身份认证";

                _DBConfig.UserName = txtUser.Text.ToString();

                _DBConfig.UserPwd = txtPassword.Text.ToString();

            }

            _conString = GetSQLmasterConstring(_DBConfig);

            _DBConfig.DB = new DBUtility.DbHelperSQL(_conString);

            _DataBaseList = _DBConfig.DB.GetDataBaseInfo();

            if (_DataBaseList.Count > 0)

            {

                cboDataBase.DataSource = _DataBaseList;

                cboDataBase.Enabled = true;

                cboDataBase.SelectedIndex = 0;

            }

            else

            {

                cboDataBase.Enabled = false;

                cboDataBase.Text = "";

                cboDataBase.DataSource = null;

            }