Special Gridline Style for Only One Column
How would I set a custom grid line style on just one column of a DataGrid ? In particular, I'd like one column to have a double line as its left border. Example: | Col1 | Col2 || Col3 (w/ Double Left Border) | Thank you, Ben It depends on where you want this double line. The vertical GridLines is drawn in OnRender for DataGridCell and the horizontal GridLines is drawn in OnRender for DataGridCellsPresenter . The border for the DataGridColumnHeader is more complicated however. It's a Rectangle that's drawn in the RenderTheme method in DataGridHeaderBorder and I don't think that there is a