radgridview pinned columns & Reorder

[fabrizio]

Hi, I have a RadGridView with the first 2 columns pinned, and the other columns allow reordering.

The first 2 columns are pinned, but I can move an unpinned column between the pinned columns or to the extreme left, so now I have three pinned columns.

Is it possible to fix this?

Thanks

[Nadya | Tech Support Engineer]

Hello, Fabrizio,

In order to prevent dragging columns over pinned ones, you can use the RadDragDropService which is responsible for the drag-drop operations in RadGridVeiw. Then, you should handle the PreviewDragOver event and prevent the drop operation if the hit target is a pinned column. 

Please refer to the following code snippet:

RadDragDropService svc = this.radGridView1.GridViewElement.GetService<RadDragDropService>();
private void svc_PreviewDragOver(object sender, RadDragOverEventArgs e)
{
    if (e.HitTarget is GridHeaderCellElement)
    {
        GridHeaderCellElement headerCell = e.HitTarget as GridHeaderCellElement;
        if (headerCell.ColumnInfo.IsPinned)
        {
            e.CanDrop = false;
        }
    }
}

Thus, you shouldn't be allowed to insert a column between pinned columns:

I hope this helps. If you have other questions, please let me know.

Regards,
Nadya | Tech Support Engineer
Progress Telerik