# HeaderFooter.ApplicationFields Property

> Gets a collection of all Microsoft Word or Heiler HighEdit fields that have been created or imported from a Microsoft Word or RTF document. The property value is an object of the type ApplicationFieldCollection. Before loading a document the LoadSettings.ApplicationFieldFormat property must be set, otherwise this collection is empty.

- **Product:** TX Text Control .NET Server
- **Section:** Reference
- **Kind:** Property
- **Introduced:** 14.0
- **Namespace:** `TXTextControl`
- **Package:** `TXTextControl.TextControl.Core.SDK` (assembly `TXTextControl.Core.dll`, from the private NuGet feed or Text Control Offline Packages)
- **Package:** `TXTextControl.TextControl.ASP.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 Server > Reference > TXTextControl > HeaderFooter.ApplicationFields Property
- **720 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/headerfooter/applicationfields-property/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/headerfooter/applicationfields-property/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/headerfooter/applicationfields-property/llms-full.txt

---

### Description

Gets a collection of all Microsoft Word or Heiler HighEdit fields that have been created or imported from a Microsoft Word or RTF document. The property value is an object of the type [ApplicationFieldCollection](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/applicationfieldcollection/llms-full.txt). Before loading a document the [LoadSettings.ApplicationFieldFormat](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/loadsettings/applicationfieldformat-property/llms-full.txt) property must be set, otherwise this collection is empty.

### Syntax

```csharp
public ApplicationFieldCollection ApplicationFields { get; }
```

```vbnet
Public ReadOnly Property ApplicationFields As ApplicationFieldCollection
```

### Examples

The following example inserts a Word-compatible customer-name merge field into a header.

```csharp
HeaderFooterCollection headers = textControl.Sections[1].HeadersAndFooters;
headers.Add(HeaderFooterType.Header);
HeaderFooter headerFooter = headers.GetItem(HeaderFooterType.Header);
headerFooter.Selection.Text = "Customer: ";
ApplicationField customer = new(ApplicationFieldFormat.MSWord, "MERGEFIELD", "Customer name", new[] { "CustomerName" });
headerFooter.ApplicationFields.Add(customer);
```

```vbnet
Dim headers As HeaderFooterCollection = textControl.Sections(1).HeadersAndFooters
headers.Add(HeaderFooterType.Header)
Dim headerFooter As HeaderFooter = headers.GetItem(HeaderFooterType.Header)
headerFooter.Selection.Text = "Customer: "
Dim customer As New ApplicationField(ApplicationFieldFormat.MSWord, "MERGEFIELD", "Customer name", New String() { "CustomerName" })
headerFooter.ApplicationFields.Add(customer)
```

### Limitations

Read only.

### See Also

Text Fields and Hypertext Links - Programming Hypertext Links.

---

## Nearby

- **Previous:** [HeaderFooter.AddUndoUnit Method](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/headerfooter/addundounit-method/llms-full.txt)
- **Next:** [HeaderFooter.Barcodes Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/headerfooter/barcodes-property/llms-full.txt)