This requires some customizations to be made in order to achieve the desired result. I recommend you to follow these steps in order to achieve the desired result:
- Add a custom attribute to the Grid's column. This online demo shows how to do that for a custom column, but the solution is the same for the default columns
- Use the RadGrid's OnRowDataBound event and get the custom parameter
- Use the value of the custom parameter in order to determine whether to change the folder's icon or not
- You can change the folder's icon by assigning your own CSS class and to the element.
Please note that all of the steps should be done on the client, because the embedded RadGrid uses client-side databinding.
I hope this helps.
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