Where can I find a third party C# control which will allow collapsible columns similar to Excel?

I've done a lot of searching for 'group by columns C# control' but all the results I've found this refers to grouping rows by a particular column - what I am actually looking for is something similar to the feature in Excel that allows a set of columns to be collapsible/hidden within another column: as with the following link http://www.technospot.net/blogs/got-huge-data-in-excel-group-columns-or-rows/





Has anyone come across a C#/.NET control that would allow for this? Many thanks...Where can I find a third party C# control which will allow collapsible columns similar to Excel?
WPF or WinForms. Either way it I would think that the amount of interface logic around such a control might end up being greater than the amount of work it would be to roll your own version.Where can I find a third party C# control which will allow collapsible columns similar to Excel?
You may contact a C#.NET expert live at website like ijug.net ,etc .