Thank you for getting back to us.
In order to change the color of a cell when it is clicked, you can subscribe to the CellClick event of RadGridView and modify the Style object of the clicked cell in the CellClick handler:
sender, Telerik.WinControls.UI.GridViewCellEventArgs e)
e.Row.Cells[e.Column.FieldName].Style.BackColor = Color.Red;
e.Row.Cells[e.Column.FieldName].Style.BorderGradientStyle = Telerik.WinControls.GradientStyles.Solid;
e.Row.Cells[e.Column.FieldName].Style.BorderColor = Color.Red;
For additional information about the Style object, please refer to our Examples application, section GridView >> Customize >> Style Cells
In your second enquiry, you are talking about Row Header, but you are actually setting the text of the column header. In case you want to set the value of the column header, however, I am not sure that I understand the exact scenario. Please send me a sample project in the support ticket that you have opened for the same topic and provide me with additional details about the place where you want to set the Employees' names.
As to your question concerning the drag and drop functionality, the desired behavior is easily achievable thanks to RadDragDropService. For additional information, please refer to the attached sample project.
I hope this helps.
the Telerik team
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