how to expand and collaps a datagridview in windows applicaion

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Hello
I want to show a .csv file data in datagridview in a windows application and want to make datagridview collapse and expands for repeated entries. repetition will be checked based on a column entry..so please tell me some thing how can i do this

Posted 1-Apr-12 21:48pm

atul tr

Updated 1-Apr-12 21:56pm

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Dean Oliver · Accepted Answer · 2012-04-02T09:13:00

http://stackoverflow.com/questions/9605448/read-a-csv-file-into-a-data-grid-view-win-forms[^]
http://social.msdn.microsoft.com/Forums/en-US/vblanguage/thread/0d5261e3-6888-480c-a9e3-27c87f26833a[^]

For the collapsing and expanding part.
http://social.msdn.microsoft.com/Forums/ar/winformsdatacontrols/thread/54ca4ac9-e23a-448a-8753-4d57e332d5c2[^]
OutlookGrid: grouping and arranging items in Outlook style[^]