如何在Windows应用程序中为DataGridView创建EmptyDataText [英] How to creating EmptyDataText for DataGridView in Windows Application

问题描述

今天我面临的问题是根据数据源显示/隐藏标签。如果数据源没有行，那么我想在winforms应用程序中设置No Data Found否则显示记录数

Today i am facing problem to show/hide label according to data source. If the data source has no row then i would like to set "No Data Found" else display number of records in winforms application.

这可能在Asp.net中，如：

This would be possible in Asp.net like:

<emptydatatemplate>
No Data Found
</emptydatatemplate>

或

EmptyDataText=" No Data Found"

但我想在Windows应用程序。如果您有任何解决方案，请帮助我。

But I would like in Windows Application. Please help me if you have any solution for the same.

任何解决方案将不胜感激！
谢谢，
Imdadhusen

Any solution would be appreciated! Thanks, Imdadhusen

推荐答案

一种方法可以实现这一点是使用Paint（）事件检查行，如果没有，请写下您的消息：
折叠

One way you could accomplish this is to use the Paint() event to check the rows and if there are none, then write your message: Collapse

private void dataGridView1_Paint ( object sender, PaintEventArgs e )
{
    DataGridView sndr = ( DataGridView )sender;

    if ( sndr.Rows.Count == 0 ) // <-- if there are no rows in the DataGridView when it paints, then it will create your message
    {
        using ( Graphics grfx = e.Graphics )
        {
            // create a white rectangle so text will be easily readable
            grfx.FillRectangle ( Brushes.White, new Rectangle ( new Point (), new Size ( sndr.Width, 25 ) ) );
            // write text on top of the white rectangle just created
            grfx.DrawString ( "No data returned", new Font ( "Arial", 12 ), Brushes.Black, new PointF ( 3, 3 ) );
        }
    }
}

谢谢 JOAT-MON ，以获得接受的解决方案。

Thanks JOAT-MON for accepted solution.

谢谢，
Imdadhusen

Thanks, Imdadhusen

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