How to use custom filter in RadGrid?

[Fernando]

How to use custom filter in RadGrid, not allowing the grid to make its internal filters after you tell him the DataSource for the data entered is already filtered.

Fernando.

[Eyup]

Hi Fernando,

Generally, you could use the ItemCommand event to cancel the actual filtering on given condition:

protected void RadGrid1_ItemCommand(object sender, GridCommandEventArgs e)
{
    if (e.CommandName == RadGrid.FilterCommandName)
    {
        Pair arguments = e.CommandArgument as Pair;
        string function = arguments.First.ToString();
        string field = arguments.Second.ToString();
        string value = ((e.Item as GridFilteringItem)[field] as GridTableCell).Column.CurrentFilterValue;

        if (true)
        {
            e.Canceled = true;
        }
    }
}

I hope this will prove helpful.

Kind regards,
Eyup
the Telerik team