# MailMergeFieldAdapter Class

> The abstract MailMergeFieldAdapter class is the base class of all special DocumentServer mail merge field adapters. It implements the necessary means to access field properties.

- **Product:** TX Text Control .NET Server
- **Section:** Reference
- **Kind:** Class
- **Introduced:** 15.0
- **Namespace:** `TXTextControl.DocumentServer.Fields`
- **Package:** `TXTextControl.TextControl.Core.SDK` (assembly `TXDocumentServer.Core.dll`, from the private NuGet feed or Text Control Offline Packages)
- **Package:** `TXTextControl.TextControl.ASP.SDK` (assembly `TXDocumentServer.dll`, from the private NuGet feed or Text Control Offline Packages)
- **.NET Framework:** reference `TXDocumentServer.dll` from the setup
- **Inherits:** `TXTextControl.DocumentServer.Fields.FieldAdapter`
- **Derived:** `TXTextControl.DocumentServer.Fields.DateField`, `TXTextControl.DocumentServer.Fields.IfField`, `TXTextControl.DocumentServer.Fields.IncludeText`, `TXTextControl.DocumentServer.Fields.MergeField`, `TXTextControl.DocumentServer.Fields.NextField`, `TXTextControl.DocumentServer.Fields.NextIfField`
- **Path:** TX Text Control .NET Server > Reference > TXTextControl.DocumentServer.Fields > MailMergeFieldAdapter Class
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-fields/mailmergefieldadapter/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-fields/mailmergefieldadapter/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-fields/mailmergefieldadapter/llms-full.txt

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## On This Page

- [Description](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-fields/mailmergefieldadapter/#description)
- [Syntax](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-fields/mailmergefieldadapter/#syntax)
- [Examples](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-fields/mailmergefieldadapter/#examples)
- [Members](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-fields/mailmergefieldadapter/#members)

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## In This Section

- [MailMergeFieldAdapter Constructor](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-fields/mailmergefieldadapter/constructor/llms.txt): Initializes a new instance of the MailMergeFieldAdapter class.
- [MailMergeFieldAdapter.PreserveFormatting Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-fields/mailmergefieldadapter/preserveformatting-property/llms.txt): Specifies whether the field's formatting should be preserved.

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## Nearby

- **Previous:** [IncludeText.TextFormat Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-fields/includetext/textformat-property/llms.txt)
- **Next:** [MailMergeFieldAdapter Constructor](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver-fields/mailmergefieldadapter/constructor/llms.txt)