Conditionally enabling disabling CellElement

[AY]

I am trying to conditionally enable and disable a CellElement based on the previous cells value. The code below works fine if the number of rows visible on the GridView appear all on one screen. If the rows exceed one screen and are scrollable, I get a null reference exception on "rowInfo.Cells[7].CellElement.Enabled = false;". Any ideas why it might be happening or a perhaps a better way to do this would really be helpful.

foreach ( var rowInfo in radGridView1.MasterGridViewTemplate.Rows )
            {
                if ( ( !( (bool)rowInfo.Cells[6].Value ) ) ) continue;
                rowInfo.Cells[7].CellElement.Enabled = false;
            }

 radGridView1.Columns[6].IsVisible = false;

[Martin Vasilev]

Hi Akuila Yabaki,

Thank you for writing.  You have experience that behavior because RadGridView uses virtualization for its cell elements and at a given time only visible cell elements have been created. In your scenario, you have to use CellFormatting event:

void radGridView1_CellFormatting(object sender, CellFormattingEventArgs e)
{
    if (e.CellElement.ColumnIndex == 7 &&
        e.CellElement.RowInfo.Cells[6].Value is Boolean &&
        (bool)e.CellElement.RowInfo.Cells[6].Value)
    {
        e.CellElement.Enabled = false;
    }
    else
    {
        e.CellElement.Enabled = true;
    }
}

Hope this helps. Do not hesitate to contact me again if you have any additional questions.

Kind regards,
Martin Vasilev
the Telerik team

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[AY]

Thanks Martin,

It works like a charm.