[Solved] GridDropDownColumn EmptyListItemText

[IT Support]

Hi,

Is it possible to change the value of the GridDropDownColumn EmptyListItemText at runtime in the ItemDataBound event?

I want to change the value for that EmptyListItem depending on the data which this item is bound to...

Kind Regards,

Raymond

[Princy]

Hello Raymond,

Try out the following code to alter the EmptyListText for a GridDropDownColumn:
c#:

protected void RadGrid1_ItemDataBound(object sender, Telerik.Web.UI.GridItemEventArgs e)
    {
        if (e.Item is GridDataItem)
        {
            GridDataItem dataItem = (GridDataItem)e.Item;
            GridDropDownColumn column = (GridDropDownColumn)RadGrid1.MasterTableView.GetColumn("DropDownColumnUniqueName");
            if (dataItem["BoundColumnUniqueName"].Text == "MyText")
            {
                column.EmptyListItemText = "Custom Text";
                column.EmptyListItemValue = "1";
            }
            else
            {
                column.EmptyListItemText = "Select Text";
                column.EmptyListItemValue = "0";
            }
        }
    }

Thanks
Princy.

[IT Support]

Hi.

Thanks for the reply. Unfortunately, that does not seem to work, the text remains the "EmptyListItemText" value defined in the aspx file...

I was able to do it as follows:

if (e.Item is GridDataItem && e.Item.DataItem is DataRowView)
{
    TableCell cell = (e.Item as GridDataItem)["MyColumn"];
    if (cell.Text == m_UnknownDropDownEntryText)
    {
        cell.Text = string.Format("{0} ({1})", m_UnknownDropDownEntryText, (e.Item.DataItem as DataRowView)["MyColumn"]);
    }
}

This seems to work, except after a postback, the column remains empty, I suspect because the OnItemDataBound event is not fired during the second postback...

Any ideas on how to fix this?

Kind Regards,

Raymond