# MailMerge.GetBlockFieldNames Method

> Returns the names of all merge fields inside the merge block with the specified name.

- **Product:** TX Text Control .NET for Windows Forms
- **Section:** Reference
- **Kind:** Method
- **Introduced:** 19.0
- **Namespace:** `TXTextControl.DocumentServer`
- **Package:** `TXTextControl.TextControl.WinForms.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 for Windows Forms > Reference > TXTextControl.DocumentServer > MailMerge.GetBlockFieldNames Method
- **469 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-documentserver/mailmerge/getblockfieldnames-method/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-documentserver/mailmerge/getblockfieldnames-method/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-documentserver/mailmerge/getblockfieldnames-method/llms-full.txt

---

### Description

Returns the names of all merge fields inside the merge block with the specified name.

### Syntax

```csharp
public string[] GetBlockFieldNames(string blockName);
```

```vbnet
Public Function GetBlockFieldNames(blockName As String) As String()
```

### Parameters

| Parameter | Description |
|---|---|
| blockName | Specifies the name of the block for which the field names are returned. |

### Return Value

Returns an array of strings specifying the field names.

### Examples

The following example retrieves block field names from the mail merge.

```csharp
string[] results = mailMerge.GetBlockFieldNames("CustomerName");
foreach (string text in results)
{
    Console.WriteLine(text);
}
```

```vbnet
Dim results As String() = mailMerge.GetBlockFieldNames("CustomerName")
For Each text As String In results
    Console.WriteLine(text)
Next
```

---

## Nearby

- **Previous:** [MailMerge.FrameMergedEventArgs.SubTextPartNumber Property](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-documentserver/mailmerge-framemergedeventargs/subtextpartnumber-property/llms-full.txt)
- **Next:** [MailMerge.GetBlockNames Method](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol-documentserver/mailmerge/getblocknames-method/llms-full.txt)