URGENT - Problem filtering DateTime IsNull

[Nuno]

Hi everybody,

Hope you can help me... i'm going crazy with this one :S

I use a GridTemplateColumn defined as  DataType="System.DateTime". When I use isNull option in the grid filter, returns me the error: 
Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: String was not recognized as a valid DateTime.

How can I solve this problem? Can anyone help me?
Thanks,
Nuno

[Princy]

Hello Nuno,

Try to set  the EnableLinqExpressions of the grid to false and check whether it resolves the error.

ASPX:

<telerik:RadGrid ID="RadGrid1" runat="server"  AllowFilteringByColumn="true" EnableLinqExpressions="false">

Thanks,
Princy.