# Mail Merge

> Fix MailMerge results in WPF: fields that stay empty, merge blocks that don't repeat, cultures, JSON ParserException and data source config files that throw.

- **Product:** TX Text Control .NET for WPF
- **Section:** Documentation
- **Kind:** Topic
- **Path:** TX Text Control .NET for WPF > Troubleshooting > Mail Merge
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/llms-full.txt

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## On This Page

- [A Merge Field Disappears or Stays Empty](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/#a-merge-field-disappears-or-stays-empty)
- [Empty Lines Remain Where Fields Had No Data](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/#empty-lines-remain-where-fields-had-no-data)
- [A Merge Block Isn't Repeated or Disappears](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/#a-merge-block-isn-t-repeated-or-disappears)
- [Numbers or Dates Are Parsed or Formatted Wrongly](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/#numbers-or-dates-are-parsed-or-formatted-wrongly)
- [MergeJsonData Throws a ParserException](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/#mergejsondata-throws-a-parserexception)
- [Merge Throws a MergeCanceledException](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/#merge-throws-a-mergecanceledexception)
- [LoadTemplate Returns False](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/#loadtemplate-returns-false)
- [The Merged Document Has the Wrong Page Size or Margins](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/#the-merged-document-has-the-wrong-page-size-or-margins)
- [Loading a Data Source Configuration File Throws an Exception](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/#loading-a-data-source-configuration-file-throws-an-exception)
- [Merged Content or Images Disappear in an Earlier Service Pack](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/#merged-content-or-images-disappear-in-an-earlier-service-pack)
- [Related Pages](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/mail-merge/#related-pages)

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## Nearby

- **Previous:** [Document Conversion](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/conversion/llms.txt)
- **Next:** [Deployment](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/troubleshooting/deployment/llms.txt)