Thank you for your question.
RadGridView does not support the features you are describing. Generally, RadGridView is designed to display records of a collection with flat (or in some cases hierarchical) data in which all records have some predefined properties. Features like Drag-to-fill and Drag-to-copy are more relevant when using a spreadsheet component and the use cases of such a component are different than the use cases of a data grid component. Unfortunately, we do not offer a spreadsheet component in our UI for WinForms
suite yet, although it is available in the UI for WPF
and UI for Silverlight
suites. You can see an online demo here: http://demos.telerik.com/silverlight/#Spreadsheet/FirstLook
I hope you find this information useful. If you have any additional questions, feel free to ask.
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