# ApplicationFieldCollection.CopyTo Method

> Copies the elements of the collection to an array, starting at a particular index.

- **Product:** TX Text Control .NET for Windows Forms
- **Section:** Reference
- **Kind:** Method
- **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 > ApplicationFieldCollection.CopyTo Method
- **876 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol/applicationfieldcollection/copyto-method/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol/applicationfieldcollection/copyto-method/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol/applicationfieldcollection/copyto-method/llms-full.txt

---

### Description

Copies the elements of the collection to an array, starting at a particular index.

### Syntax

```csharp
public override void CopyTo(Array array, int index);
```

```vbnet
Public Overrides Sub CopyTo(array As Array, index As Integer)
```

### Parameters

| Parameter | Description |
|---|---|
| array | Specifies the array to copy to. |
| index | Specifies the index of the destination array at which to begin copying. |

### Examples

The following example copies application fields to a stable array before updating their visible merge results.

```csharp
textControl.Text = "Dear ,";
textControl.InputPosition = new InputPosition(5);
ApplicationFieldCollection fields = textControl.ApplicationFields;
ApplicationField customerField = new(ApplicationFieldFormat.MSWord, "MERGEFIELD", "Customer name", new[] { "CustomerName" }) { ID = 100 };
fields.Add(customerField);
ApplicationField[] snapshot = new ApplicationField[fields.Count];
fields.CopyTo(snapshot, 0);
foreach (ApplicationField field in snapshot)
{
    field.Text = "Pending merge";
}
```

```vbnet
textControl.Text = "Dear ,"
textControl.InputPosition = New InputPosition(5)
Dim fields As ApplicationFieldCollection = textControl.ApplicationFields
Dim customerField As New ApplicationField(ApplicationFieldFormat.MSWord, "MERGEFIELD", "Customer name", New String() { "CustomerName" }) With { .ID = 100 }
fields.Add(customerField)
Dim snapshot(fields.Count - 1) As ApplicationField
fields.CopyTo(snapshot, 0)
For Each field As ApplicationField In snapshot
    field.Text = "Pending merge"
Next
```

---

## Nearby

- **Previous:** [ApplicationFieldCollection.Clear Method](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol/applicationfieldcollection/clear-method/llms-full.txt)
- **Next:** [ApplicationFieldCollection.GetItem Method](https://docs.textcontrol.com/tx-text-control-dotnet-winforms/reference/txtextcontrol/applicationfieldcollection/getitem-method/llms-full.txt)