Generally, the ExpressionEditor
is designed to work in a scenario where the item is a complex type and would not work in the specific requirement you have to filter a List of strings. Can you confirm if this is the setup at your end? Can you please provide more information on the functionality you aim for so we can suggest a workaround? Are you using the ExpressionEditor in a combination with RadGridView?
The best case scenario would be to raise a ticket and provide a sample project which we can familiarize with and advise you more accurately.
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