Excel could not be found - missing assembly reference?

Posted on 2011-09-07
Last Modified: 2012-05-12
Hi, I did get this error in my error list while compiling the project. Previously the project are done with MS Office Excel 2003, and currenlty i am using Excel 2007. In my system i don't have MS office 2003. In my project, my references i did add Excel and Microsoft.Office.Core.

The error is ->
The type or namespace name 'Excel' could not be found (are you missing a using directive or an assembly reference?)      

private int findColumnDept(Excel.Worksheet Ws)

Error was underline in "Excel"

private int findColumnDept(Excel.Worksheet Ws)
			int no=1;
			string CellValue="";
			int retryCount=0;
			bool EmptyCellAllowed=true;
				Excel.Range range1 = Ws.get_Range( "A"+no, "A" + no);
				if (range1.Cells.Value2!=null)

					if (retryCount>15)
			}while ((CellValue.Length>0)||(EmptyCellAllowed)) ;

			return no-1;


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Question by:TITO2009
  • 2
LVL 39

Accepted Solution

Pratima Pharande earned 500 total points
ID: 36500995

Author Comment

ID: 36501024
Hi, i did manage to solve after

using Excel = Microsoft.Office.Interop.Excel;

Thank you.
LVL 39

Expert Comment

by:Pratima Pharande
ID: 36501030
glad to help you

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