Ty Bonnie but I knew that cause I needed 1 method that would received 2 row and returned a string with the columns names that where diferent.
That's the prb with the .net framework so many classes with so many methods and properties that sometimes is easy to get lost on it. ;)

>>Actually Bonnie if you read Michel question both answers where not so right, since you may have a row that is passed to a method as a parameter and in that case you will not have the datatable or dataset variable.
>>The correct answer should be assuming you have a row var called myRow
>>

>>myRow.Table.Columns.Count

Excellent point Alexandre!! Michel *did* ask specifically about a row's columns collection, not a table's columns collection. I think we were all sleeping on that one. Good catch! You should get the stars! =0)
>
>~~Bonnie