Excel worksheets and VB .NET

[Christopher Kain]

Hi, I need to conditionally rename a worksheet in an excel 2000 workbook.
I have the following piece of code:
application.excel.worksheets("SheetName").Name = "NewSheetName"

which works to rename it. However, if SheetName doesn't exist or has been
renamed the program throws and exception. How can I check to make sure that
a sheet exists in the sheets collection?

 

[Doug Glancy]

Christopher,

I think you should take a look at Exception Handling (Try, Catch and Finally
or something like that) in VB.Net and catch the exception and deal with it
in VB.Net.

hth,

Doug Glancy

 

[Tom Ogilvy]

it probably takes more code to check than to ignore the error

on error resume next
ActiveWorkbook.worksheets("SheetName").Name = "NewSheetName"
on error goto 0

dim sh as Worksheet
set sh = nothing
if you must check
on error resume next
set sh = ActiveWorkbook.worksheets("Sheetname")
On error goto 0
if not sh is nothing then
' sheet exists
Activeworkbook.worksheets("SheetName").Name = "NewSheetName"
End if

another approach is to loop through all the sheets to see if any has that
name.

 

[Tom Ogilvy]

didn't see the vb .Net in your subject - just read your posting - best to
put all pertinent information in the body of the email.

Nonetheless, perhaps you can incorporate the error handling into your code.