DEV GridControl双击行事件

 //双击行弹出nodeDetail信息 
        private void gridView1_MouseDown(object sender, MouseEventArgs e) 
        {  
            DevExpress.XtraGrid.Views.Grid.ViewInfo.GridHitInfo hInfo = gridView1.CalcHitInfo(new Point(e.X,e.Y));  
            if (e.Button == MouseButtons.Left && e.Clicks == 2) 
            {  
                //判断光标是否在行范围内  
                if (hInfo.InRow)  
                {  
                    //取得选定行信息  
                    string nodeName = gridView1.GetRowCellValue(gridView1.FocusedRowHandle, "nodeName").ToString(); 
                         string sql = "select nodeDetail from treelist where nodeName = ‘" + nodeName + "‘"; 
                    SqlCommand comm = new SqlCommand(sql, conn);  
                    try 
                    {  
                        conn.Open();  
                        MessageBox.Show(comm.ExecuteScalar().ToString(), "Detail"); 
                    }  
                    catch (Exception ex)  
                    {  
                        MessageBox.Show(ex.Message, "Error"); 
                    }  
                    finally 
                    {  
                        conn.Close();  
                    }  
                }  
            }  
        }