How to add a RowPadding to DataGridView?

I'm currently working on a groupable datagridview. All works fine, but now I want to add a padding to the left. In the picture below I'm using the rowheader and paint over it, but isn't there any ot开发者_StackOverflow中文版her way?

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You could use another column, with a fixed width, the row-header hidden and the background-color set to the background-color of the grid.