# MailMerge.MergeBlocks Method

> Merges all repeating blocks that are contained in the loaded template with the System.Data.DataTable instances contained in the given System.Data.DataSet. The name of the System.Data.DataTable must match the name of the block in the template. The supported format of the repeating blocks can be found in the ASP.NET User's Guide.

> **Note:** This is deprecated and should not be used in new work.

- **Product:** TX Text Control .NET Server
- **Section:** Reference
- **Kind:** Method
- **Introduced:** 14.0
- **Obsolete:** the assembly marks this as obsolete
- **Namespace:** `TXTextControl.DocumentServer`
- **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
- **Path:** TX Text Control .NET Server > Reference > TXTextControl.DocumentServer > MailMerge.MergeBlocks Method
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver/mailmerge/mergeblocks-method/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver/mailmerge/mergeblocks-method/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver/mailmerge/mergeblocks-method/llms-full.txt

---

## On This Page

- [Description](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver/mailmerge/mergeblocks-method/#description)
- [Syntax](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver/mailmerge/mergeblocks-method/#syntax)
- [Parameters](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver/mailmerge/mergeblocks-method/#parameters)
- [Return Value](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver/mailmerge/mergeblocks-method/#return-value)
- [Examples](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver/mailmerge/mergeblocks-method/#examples)

---

## Nearby

- **Previous:** [MailMerge.MergeBlockNamePrefix Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver/mailmerge/mergeblocknameprefix-property/llms.txt)
- **Next:** [MailMerge.MergeCulture Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-documentserver/mailmerge/mergeculture-property/llms.txt)