DevExpress Gridview 当没有记录的时候显示自定义提示信息

 /// <summary>
        ///当没有记录的时候显示
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void gridView1_CustomDrawEmptyForeground(object sender, DevExpress.XtraGrid.Views.Base.CustomDrawEventArgs e)
        {
            //方法一（此方法为GridView设置了数据源绑定时，可用）

            //DevExpress.XtraGrid.Views.Base.ColumnView columnView = sender as DevExpress.XtraGrid.Views.Base.ColumnView;
            //BindingSource bindingSource = this.gridView1.DataSource as BindingSource;
            //if (bindingSource.Count == 0)
            //{
            //    string str = "没有查询到你所想要的数据!";
            //    Font f = new Font("宋体", 10, FontStyle.Bold);
            //    Rectangle r = new Rectangle(e.Bounds.Top + 5, e.Bounds.Left + 5, e.Bounds.Right - 5, e.Bounds.Height - 5);
            //    e.Graphics.DrawString(str, f, Brushes.Black, r);
            //}
            //方法二（此方法为GridView没有设置数据源绑定时，使用，一般使用此种方法）

            if (this.gridView1.RowCount == 0)
            {
                string str = "没有查询到你所想要的数据!";
                Font f = new Font("宋体", 10, FontStyle.Bold);
                Rectangle r = new Rectangle(e.Bounds.Left + 5, e.Bounds.Top + 5, e.Bounds.Width - 5, e.Bounds.Height - 5);
                e.Graphics.DrawString(str, f, Brushes.Black, r);
            }

        }