# Merge Data Into Fields

> Fill a DOCX invoice template in Windows Forms with MergeJsonData: import its fields with LoadSettings, merge in a ServerTextControl and save the result as PDF.

- **Product:** TX Text Control .NET for Windows Forms
- **Section:** Documentation
- **Kind:** Topic
- **Path:** TX Text Control .NET for Windows Forms > Getting Started > Mail Merge > Merge Data Into Fields
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/getting-started/mail-merge/fields/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/getting-started/mail-merge/fields/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/getting-started/mail-merge/fields/llms-full.txt

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## On This Page

- [Prerequisites](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/getting-started/mail-merge/fields/#prerequisites)
- [How a Merge Works](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/getting-started/mail-merge/fields/#how-a-merge-works)
- [Merge the Data](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/getting-started/mail-merge/fields/#merge-the-data)
- [Control Empty Fields and Lines](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/getting-started/mail-merge/fields/#control-empty-fields-and-lines)
- [Other Kinds of Data](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/getting-started/mail-merge/fields/#other-kinds-of-data)
- [Next Steps](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/getting-started/mail-merge/fields/#next-steps)

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## Nearby

- **Previous:** [Create a Template](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/getting-started/mail-merge/template/llms.txt)
- **Next:** [Add Repeating Merge Blocks](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/getting-started/mail-merge/blocks/llms.txt)