Not sure if this is what you want:
Creating a SplitContainer on the screen.
Anchor = Top, Bottom, Left, Right IsSplitterFixed = True (Trick)
Creating another two datagridviews, each a side inside the SplitterContainer
Dock = Fill
I generally use a
TableLayoutPanel to accomplish this. It is very easy to use (a simple introduction can be found here).
You create to cells in the first row and set it to 50% width each. In each cell you put one
DataGrid and you set their