DataGrid和ScrollBar样式WPF

Question

I'm creating DataGrid style in WPF. Now I have rounded corners in my DataGrid , but when appears ScrollBar , it looks not beautiful. DataGridHeader corner is still rounded, and I can see space between corners of ScrollBar button and DataGridHeader. Here is an image:

I need to show rounded corners only when DataGrid hasn't ScrollBar .In all other cases I need to show this:

So how to remove dynamicaly that space on the first image?

Answer 1

样式滚动条，以便通过使用负的左边距值使其与网格重叠