# ApplicationField.TypeName Property

> Gets or sets the field's type name. For example for the type name of a Microsoft Word MergeField is MERGEFIELD. If the type name of the field is changed, its parameters must also be changed.

- **Product:** TX Text Control .NET for Windows Forms
- **Section:** Reference
- **Kind:** Property
- **Introduced:** 14.0
- **Namespace:** `TXTextControl`
- **Package:** `TXTextControl.TextControl.WinForms.SDK` (assembly `TXTextControl.dll`, from the private NuGet feed or Text Control Offline Packages)
- **.NET Framework:** reference `TXTextControl.dll` from the setup
- **Path:** TX Text Control .NET for Windows Forms > Reference > TXTextControl > ApplicationField.TypeName Property
- **727 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol/applicationfield/typename-property/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol/applicationfield/typename-property/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol/applicationfield/typename-property/llms-full.txt

---

### Description

Gets or sets the field's type name. For example for the type name of a Microsoft Word MergeField is MERGEFIELD. If the type name of the field is changed, its parameters must also be changed.

### Syntax

```csharp
public string TypeName { get; set; }
```

```vbnet
Public Property TypeName As String
```

### Examples

The following example inserts and configures a Word-compatible mail-merge field by using `ApplicationField.TypeName`.

```csharp
textControl.Text = "Dear Customer";
textControl.InputPosition = new InputPosition(5);
ApplicationField applicationField = new(ApplicationFieldFormat.MSWord, "MERGEFIELD", "Customer", new[] { "CustomerName" });
textControl.ApplicationFields.Add(applicationField);

applicationField.TypeName = "MERGEFIELD";
if (!string.IsNullOrWhiteSpace(applicationField.TypeName))
{
    Console.WriteLine($"Type Name: {applicationField.TypeName}");
}
```

```vbnet
textControl.Text = "Dear Customer"
textControl.InputPosition = New InputPosition(5)
Dim applicationField As New ApplicationField(ApplicationFieldFormat.MSWord, "MERGEFIELD", "Customer", New String() { "CustomerName" })
textControl.ApplicationFields.Add(applicationField)

applicationField.TypeName = "MERGEFIELD"
If Not String.IsNullOrWhiteSpace(applicationField.TypeName) Then
    Console.WriteLine($"Type Name: {applicationField.TypeName}")
End If
```

---

## Nearby

- **Previous:** [ApplicationField.Parameters Property](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol/applicationfield/parameters-property/llms-full.txt)
- **Next:** [ApplicationFieldCollection Class](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol/applicationfieldcollection/llms-full.txt)