Drag & Drop is causing Column Sizing to fail.

[Rick Knicely]

I've noticed that when I add drag and drop to a grid the column sizing no loger works.

I have implemented the drag/drop events..

        private void OnDropQuery(object sender, DragDropQueryEventArgs e)
        {

            Type sourceType = e.Options.Source.GetType();
            if (sourceType == typeof(GridViewHeaderCell))
            {
                return;
            }
        .
        .
        .

and
        #region dragQuery
        protected virtual void OnDragQuery(object sender, DragDropQueryEventArgs e)
        {
            if (sourceType == typeof(GridViewHeaderCell))
            {
                e.QueryResult = true;
            }
        .
        .
        .

How should the drag and drop respond to the GridViewHeader?

[Tsvyatko]

Hello Rick Knicely,

The cause of the problem is related to this line of code:

protected virtual void OnDragQuery(object sender, DragDropQueryEventArgs e)
       {
           if (sourceType == typeof(GridViewHeaderCell))
           {
               e.QueryResult = true;
           }

Setting QueryResult to true, enables dragging even in case of resizing the columns and overrides resizers default behavior.

Best wishes,
Tsvyatko
the Telerik team

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