Telerik Document Processing Feedback Portal
Back to Feed
Request a Feature Report a Bug
Unplanned
Last Updated: 24 Mar 2020 15:30 by ADMIN
Alexander
Created on: 03 Mar 2020 11:10
Category: WordsProcessing
Type: Bug Report
1
MailMerge fails if the document contains a "table of contents" with at least 2 entries
I have created a very simple template (see attached file), import it, add my contents and later try to do a MailMerge.
However, the call to this function fails with the following exception:
System.ArgumentException
  HResult=0x80070057
  Message=The document element is already associated with a parent.
Parametername: item
  Source=Telerik.Windows.Documents.Flow
  StackTrace:
   at Telerik.Windows.Documents.Flow.Model.Collections.DocumentElementCollection`2.VerifyDocumentElementOnInsert(T item) in c:\DeveloperTooling_Agent13\_work\91\s\Documents\Flow\Flow\Model\Collections\DocumentElementCollection.cs:line 69
   at Telerik.Windows.Documents.Core.Data.DocumentElementCollectionBase`2.InsertRange(Int32 index, IEnumerable`1 items) in c:\DeveloperTooling_Agent13\_work\91\s\Documents\Core\Core\Core\Data\DocumentElementCollectionBase.cs:line 129
   at Telerik.Windows.Documents.Flow.Model.InlineRangeEditor.InsertInlinesInRange(InlineBase start, IEnumerable`1 inlines) in c:\DeveloperTooling_Agent13\_work\91\s\Documents\Flow\Flow\Model\InlineRangeEditor.cs:line 132
   at Telerik.Windows.Documents.Flow.Model.Fields.FieldInfo.UpdateFieldCore(FieldUpdateContext context) in c:\DeveloperTooling_Agent13\_work\91\s\Documents\Flow\Flow\Model\Fields\FieldInfo.cs:line 236
   at Telerik.Windows.Documents.Flow.Model.Fields.FieldInfo.UpdateFieldInternal(FieldUpdateContext context) in c:\DeveloperTooling_Agent13\_work\91\s\Documents\Flow\Flow\Model\Fields\FieldInfo.cs:line 186
   at Telerik.Windows.Documents.Flow.Model.MailMergeProcessor.ExecuteMailMerge(RadFlowDocument document, Object record) in c:\DeveloperTooling_Agent13\_work\91\s\Documents\Flow\Flow\Model\MailMergeProcessor.cs:line 57
   at Telerik.Windows.Documents.Flow.Model.MailMergeProcessor.Execute(RadFlowDocument document, IEnumerable collection) in c:\DeveloperTooling_Agent13\_work\91\s\Documents\Flow\Flow\Model\MailMergeProcessor.cs:line 25
   at Telerik.Windows.Documents.Flow.Model.RadFlowDocument.MailMerge(IEnumerable collection) in c:\DeveloperTooling_Agent13\_work\91\s\Documents\Flow\Flow\Model\RadFlowDocument.cs:line 337
   at JOIM.TextExport.DocumentGenerator.Export(String outputPath) in P:\Tolaris\JOIM.Common\JOIM.TextExport\DocumentGenerator.cs:line 581

using Telerik.Windows.Documents.Flow.FormatProviders.Docx;
using Telerik.Windows.Documents.Flow.Model;
using Telerik.Windows.Documents.Spreadsheet.Model;

...

using (StreamfileStream = File.Open(templatePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
    var provider = newDocxFormatProvider(); 
    _document = provider.Import(fileStream);
}

...

_document = Document.MailMerge(new [] { MergeFieldData });

Attached Files:
2 comments
ADMIN
Dimitar
Posted on: 04 Mar 2020 09:03

Hi Alexander,

The TOC field is not currently supported in the RadWordsProcessing library. We have a feature request for this in our feedback portal. You can track its progress, subscribe to status changes and add your comment to it here: WordsProcessing: Table Of Contents - TOC field.

In this case, the mail merge functionality tries to update the filed and fails because the merge filed is not supported. I have approved this issue as well and it will remain as a separate item. To work around it you can set the IsLocked property of the fields before performing the mail merge: 

var fields = _document.EnumerateChildrenOfType<FieldCharacter>();

foreach (var item in fields)
{
    if (item.FieldInfo.Field is MergeField)
    {
        continue;
    }
    item.FieldInfo.IsLocked = true;

}
var merged = _document.MailMerge(mailMergeDataSource);

fields = merged.EnumerateChildrenOfType<FieldCharacter>();

foreach (var item in fields)
{
    if (item.FieldInfo.Field is MergeField)
    {
        continue;
    }
    item.FieldInfo.IsLocked = false;

}

Should you have any other questions do not hesitate to ask.

Regards,
Dimitar
Progress Telerik

Get quickly onboarded and successful with your Telerik and/or Kendo UI products with the Virtual Classroom free technical training, available to all active customers. Learn More.
Alexander
Posted on: 03 Mar 2020 13:38

I have debugged this error and found that you check in VerifyDocumentElementOnInsert that the items to insert do not have any parent. However, when removing a whole paragraph (via DeleteContentDifferentParagraphs), the parents from the Inlines are not removed.

The problem, however, is that the contents of the TOC are deleted, which is not what one expects...

Create an account Log In
View
Type
Status
Category