The WinForms Tab Splitter Container provides a Visual Studio-like split view capability with movable splitter that helps to resize the split views on demand. It displays the documents in a horizontal or vertical split. Supports swapping and collapsing the views.
Tab splitter container control provides support for horizontal and vertical split views
Your users can easily swap tab groups using built-in controls, just like VS 2008.
A group can be optionally collapsed by the end user, as shown.