# SubTextPart.Number Property

> Gets the subtextpart's number. The first subtextpart has the number 1. The number is defined through the textflow. A textpart with a smaller start position has a smaller number. When an outer subtextpart has the same start position than one of its nested textparts the outer textpart has a smaller number.

- **Product:** TX Text Control .NET Server
- **Section:** Reference
- **Kind:** Property
- **Introduced:** 23.0
- **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 > SubTextPart.Number Property
- **561 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/subtextpart/number-property/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/subtextpart/number-property/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/subtextpart/number-property/llms-full.txt

---

### Description

Gets the subtextpart's number. The first subtextpart has the number 1. The number is defined through the textflow. A textpart with a smaller start position has a smaller number. When an outer subtextpart has the same start position than one of its nested textparts the outer textpart has a smaller number.

### Syntax

```csharp
public int Number { get; }
```

```vbnet
Public ReadOnly Property Number As Integer
```

### Examples

The following example marks the selected customer name as a named document region by using `SubTextPart.Number`.

```csharp
textControl.Text = "Customer: Contoso Ltd.";
textControl.Select(10, 12);
SubTextPart subTextPart = new("CustomerName", 10);
textControl.SubTextParts.Add(subTextPart);

Console.WriteLine($"Number: {subTextPart.Number}");
Console.WriteLine("Sub Text Part is ready for use.");
```

```vbnet
textControl.Text = "Customer: Contoso Ltd."
textControl.Select(10, 12)
Dim subTextPart As New SubTextPart("CustomerName", 10)
textControl.SubTextParts.Add(subTextPart)

Console.WriteLine($"Number: {subTextPart.Number}")
Console.WriteLine("Sub Text Part is ready for use.")
```

### Limitations

Read only.

---

## Nearby

- **Previous:** [SubTextPart.NestedLevel Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/subtextpart/nestedlevel-property/llms-full.txt)
- **Next:** [SubTextPart.OuterMostSubTextPart Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol/subtextpart/outermostsubtextpart-property/llms-full.txt)