ReportSelectionFormula is not working.

Hi ,

I have used ReportSelectionFormula in my code , when I am setting ReportSelectionFormula  using code then I am getting error-

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Crystal Report Windows Forms Viewer

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Unknown Query Engine Error

Failed to open a rowset.

Error in File C:\Users\ADMINI~1\AppData\Local\Temp\PHospClm {B0F24441-1679-45BC-992E-B3CA5A9B919F}.rpt:

Unknown Query Engine Error

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OK   

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But if I m giving same ReportSelectionFormula  in crystal report designer then it is working fine.

Please suggest me.