Error This key is already associated with an element of this collection

Question

I am working on vba macros. I was trying to use a dictionary. But it is giving error 457 with debugger pointing to toprow.Add ActiveCell.value, val

Answer 1

You can also add some very basic error handling, if all you wish to do is skip over the record throwing this error. I simply inserted the below line immediately above the one which was generating this error for me, and now it happily moves along, ignoring duplicate keys which used to throw this error.

On Error Resume Next