Ability to move Columns

My grid used to have the ability to move columns, but it's gone. I had a line of code setting a value for the property Me.AllowSelection, but even after I comment it out, a single click in the header does nothing. I notice that clicking and dragging in the body of the grid doesn't highlight a range of cells the way it used to. Any idea how I could have ended up in this pickle? Thanks!

You might check the property grid in the designer in case the AllowSelection property have been mis-set there.If it has, then commenting out your other setting will not affect things. Try explicitly setting these two properties: Me.GridDataBoundGrid1.AllowDragSelectedCols = true; Me.GridDataBoundGrid1.AllowSelection = GridSelectionFlags.Any; If this does not fix things, look for any mouse events you might be handling, and check to see if commenting out these handlers might get things working.