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Error in filtering grid when data source is LinqDataSource

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reza meshksar
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reza meshksar asked on 20 Oct 2010, 12:30 AM
In my form I have a RadGrid control and the data source is LinqDataSource which is connected to Entity Framework Model.

Everything works fine except when I am trying to do filtering on columns. For example when I try to apply contains filter on a string column I am getting this error:

LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method cannot be translated into a store expression.


We are using DataSourceID property in the grid for data binding.

I tried EntityDataSource as datasource and filtering works fine, but we have to use LinqDataSource in our specific case.

Any ideas why it happens?

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Maria Ilieva
Telerik team
answered on 25 Oct 2010, 09:49 AM
Hello,

Linq to Entities does not support as many conversion of functions to server hosted sql.

ToString (on anything) is one of them

Here's a post suggesting workarounds and here's the list of supported functions



All the best,
Maria Ilieva
the Telerik team
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reza meshksar
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Maria Ilieva
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