Hi Cuneyt,
Thank you for the additional information.
In general, you can execute the described scenario with
OpenAccessLinqDataSource, although in this case you will need to use the events it exposes rather then
Linq DataSource Configuration Wizard. If you find this feasible, I would suggest to you to enhance the Selecting event in a way that adds a new parameter to the datasource's collection of Where parameters as well as a new condition to the where clause for each of the checked nodes in RadTreeView. As a guide line, you can use the following code snippet:
I hope this helps. If you have additional questions, or need further assiatance, do not hesitate to get back to us.
Regards,
Doroteya
Telerik
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