Here is a web link to do it with VB6....

http://www.freevbcode.com/ShowCode.asp?ID=4303


Maybe you can take the formula used for this function and convert it to work
with C#...

Mark Ivey

"guest" wrote in message
...
Hello, I wanted to write a routine in C# that converts a Excel column
number
to column letter and vice versa. Any ideas?