The default filter operators are determined according to the data type of the column. Since you are having a nullable decimal field, the engine assigns the FilterOperator.None
As discussed previously in the thread you can add an empty filter having the IsEqualTo
operator. In case you keep experiencing issues please open up a support ticket and send us your project so that we can further investigate it.
I hope this helps. Should you have further questions please do not hesitate to write back.
Telerik by Progress
Check out the Windows Forms project converter, which aids the conversion process from standard Windows Forms applications written in C# or VB to Telerik UI for WinForms. For more information check out this blog post
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