biff biff - 11 months ago 89
C# Question

Show Placeholder Text in DataGridView Cells

I need to show a placeholder which contains a string in first two coloumns of the first row of datagrid view in winforms. The placeholder is to be displayed when the datagrid is empty.

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Answer Source

You need to handle CellPainting event and draw place holder yourself:

void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
    if (e.RowIndex < 0 || e.ColumnIndex < 0)        /*If a header cell*/
    if (!(e.ColumnIndex == 0 || e.ColumnIndex == 1) /*If not our desired columns*/

    if(e.Value == null || e.Value == DBNull.Value)  /*If value is null*/
        e.Paint(e.CellBounds, DataGridViewPaintParts.All
            & ~(DataGridViewPaintParts.ContentForeground));

        TextRenderer.DrawText(e.Graphics, "Enter a value", e.CellStyle.Font,
            e.CellBounds, SystemColors.GrayText, TextFormatFlags.Left);

        e.Handled = true;