My project is about merging 1,600 documents into one document. For testing, I tried to merge 500 documents and it worked well. But when I tried to merge 1,600 documents, the application stopped and throws an error:
An exception of type 'System.Runtime.InteropServices.ExternalException' occurred in Spire.Doc.dll but was not handled in user code
Additional information: Cannot open storage. File Name is: D:\Docs-Dev\LettersTemp\960.doc
I tried to merge again, same error occurred at the 812th document.
Any solutions for merging bulk documents?
Please help. Thanks.