Thank you for writing.
The following namespaces contain common resources and provide common functionality needed by the different applications part of our QSF. For your own implementation you would not need these assemblies. You can check the source code of the RadGridView | Spreadsheet
example in the installation folder of our controls. Its default location is: C:\Program Files (x86)\Telerik\UI for WinForms Q1 2015\Examples\QuickStart\GridView\Spreadsheet
I hope this helps. Should you have further questions
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