I have multivalue parameters in my report, i have datasource to get those values but when i did try to set display member and value member Edit screen show "No Data Source". I have attached a screen shot for your reference please have a look.
The ProductLineSales demo report that is part of the sample reports we provide with the product has a MultiValue report parameter and the fields of its data source are available in the (see attached screenshot). So there must be something else wrong on your end for this problem to occur and without more information or a sample report we can only guess what is wrong.
Please review the ProductLineSales demo report and compare what differs in your case.
Greetings,
Steve
the Telerik team
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