Exception: Collection was modified; enumeration operation may not execute on TableOfEntries.Update()

GemBox.Document
1

Hi there, I’m getting this weird error when updating the TableOfEntries object. I tried this both on version 35.0.0.1574 and the latest 35.0.1869, and it’s the same. Here are the details:

Exception message: “Collection was modified; enumeration operation may not execute.”

at System.ThrowHelper.ThrowInvalidOperationException(ExceptionResource resource) in System\ThrowHelper.cs:line 60
at System.Collections.Generic.List1.Enumerator.MoveNextRare() in System.Collections.Generic\List.cs:line 222 at GemBox.Document.ElementCollection1..MoveNext()
at t..MoveNext()
at t..MoveNext()
at t..MoveNext()
at t..MoveNext()
at t..MoveNext()
at x..MoveNext()
at x.(TableOfEntries )
at .ExcelService.Word.WordTemplateService.GenerateTemplateByte(DocX templateDocument, String html, DocumentDto documentDto, String docType) in C:\\ExcelService\Word\WordTemplateService.cs:line 714

Here is the word document thats triggering this exception: Click Here!

2

Hi David,

I’m getting Access Denied for that document’s link.
Please try sharing it again.

Regards,
Mario

3

Sorry, didn’t set the link to public, now it should be ok.

4

Hi David,

Please try again with this NuGet package:

Install-Package GemBox.Document -Version 35.0.1883-hotfix

Note that this is a hidden pre-released version, to install it you’ll need to run the above command on the NuGet Package Manager Console (Tools → NuGet Package Manager → Package Manager Console).

Regards,
Mario

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