Drawing issue when cells disabled

[Nordy]

I have the following code:

private void gridAttributes_RowFormatting(object sender, RowFormattingEventArgs e)
        {
            AttributeBase obj = e.RowElement.RowInfo.DataBoundItem as AttributeBase;
            GridCellElement cell = null;

            if (obj.DataType == "varchar")
                cell = e.RowElement.RowInfo.Cells[2].CellElement;
            else if (obj.DataType == "bit")
                cell = e.RowElement.RowInfo.Cells[1].CellElement;

            cell.Enabled = false;
            cell.DrawFill = true;
            cell.GradientStyle = Telerik.WinControls.GradientStyles.Solid;
            cell.BackColor = SystemColors.ControlLightLight;
        }

It works fine on initially setting up which cells should be enabled or disabled, either cell 1 or cell 2 will be enabled, but not both.  The problem comes when I've got enough rows to cause a vertical scroll bar to appear.  As I scroll down, BOTH cells will be disabled.  Then as I scroll up and down, the problem works its way up the grid until all cells in columns 1 and 2 are disabled and grayed.

Any ideas?  Thanks.  Please let me know if you need more info.

[Jack]

Hi Jamie,

Thank you for asking this question.

When dealing with cells in RadGridView it is better to use the CellFormatting event. It is also a requirement to reset any changes to the cell's style when your condition is not applicable.

I updated slightly your code. Consider the following code snippet:

void rgv_CellFormatting(object sender, Telerik.WinControls.UI.CellFormattingEventArgs e)
{
   GridCellElement cell = e.CellElement;
   AttributeBase obj = cell.RowElement.RowInfo.DataBoundItem as AttributeBase;

   if (obj.DataType == "varchar" && cell.ColumnIndex == 2 ||
       obj.DataType == "bit" && cell.ColumnIndex == 1)
   {
       cell.Enabled = false;
       cell.DrawFill = true;
       cell.GradientStyle = Telerik.WinControls.GradientStyles.Solid;
       cell.BackColor = SystemColors.ControlLightLight;
   }
   else
   {
       cell.DrawFill = false;
   }
}

Hope this helps. Do not hesitate to contact us if you have other questions.

Greetings,
Jack
the Telerik team

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[Nordy]

Thanks for the quick reply!  I went ahead and changed my code to use CellFormatting instead of RowFormatting as you suggested, and changed your code further by adding cell.Enabled = true to the else statement under cell.DrawFill = false.  Now that I see it, it makes sense.

Thanks again.