InfoPath Dev

Hi, I've created a repeating table for file attachment. For each row, there is a column for filename from file attachment. With the following source code, it seems to work perfect. But then, the below C# source code doesn't work after I added a new row inside the repeating table. It only work on the 1st row ...

Hi I want to insert the filename from the file (Attachment1) attached inside the form into the textbox (AttachmentComment). Below shows the source code inside my InfoPath form. I got an error related to DOM. Below shows the error: Error 1 An object reference is required for the nonstatic field, method, or property ...