Handling "No cells were found." Error in Excel

Posted by Sathish on Stack Overflow See other posts from Stack Overflow or by Sathish
Published on 2010-06-11T10:58:55Z Indexed on 2010/06/11 11:02 UTC
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I am working on Excel VSTO application and finding error cells in the worksheets using the below code

Excel.Range rngTemp;
Excel.Range rngErrorRange;

Excel._Worksheet Sheet1 = (Excel._Worksheet)xlCTA.Sheets["Sheet1"];
rngTemp = wsCTAWK11.UsedRange;
rngErrorRange = rngTemp.SpecialCells(Excel.XlCellType.xlCellTypeFormulas, Excel.XlSpecialCellsValue.xlErrors);

when there are really error cells found then i do not have any issues but when i dont have any error cells in these sheet i get the below exception

**threw an exception of type 'System.Runtime.InteropServices.COMException'
    base {System.Runtime.InteropServices.ExternalException}: {"No cells were found."}**

How to handle this... Pls help

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