Display Error Attempted to read or write protected memory. This is often an indication that other memory has been corrupted

Question

Dear Sir/Mam

I have a form which display some records. when i prints those records it gives  such error  Error Attempted to read or write protected memory. This is often an indication that other memory has been corrupted. And i am using Windows Server 2003. I m sending the screen shot of the error and source code.