Bold 1st Row in Excel Via C#
                            
                         
                        
                     
                 
                
                    Is it possible to bold the 1st row in an Excel file via C# -- of course this file is open.
I have tried 
Excel.Application oXL;
myWorkBk = oXL.Workbooks.Add(missingValue);
myWorkSht = (Excel.Worksheet)myWorkBK.Worksheets.get_Item(1);
myWorkSht.get_Range(myWorkSht.Cells[1,1], myWorkSht.Cells[1,7].Font.Bold = true;
but this throws a COM Exception.  Anyone have any other thoughts?