# SignatureDocument.UniqueId Property

> Gets or sets the unique document identifier.

- **Product:** TX Text Control .NET Server
- **Section:** Reference
- **Kind:** Property
- **Namespace:** `TXTextControl.Web.MVC.DocumentViewer.Models`
- **Package:** `TXTextControl.Web.DocumentViewer` (assembly `TXTextControl.Web.MVC.DocumentViewer.dll`, from nuget.org, the private NuGet feed or Text Control Offline Packages)
- **Package:** `TXTextControl.Web.DocumentViewer.Classic` (assembly `TXTextControl.Web.MVC.DocumentViewer.dll`, from nuget.org)
- **Path:** TX Text Control .NET Server > Reference > TXTextControl.Web.MVC.DocumentViewer.Models > SignatureDocument.UniqueId Property
- **120 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-web-mvc-documentviewer-models/signaturedocument/uniqueid-property/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-web-mvc-documentviewer-models/signaturedocument/uniqueid-property/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-web-mvc-documentviewer-models/signaturedocument/uniqueid-property/llms-full.txt

---

### Description

Gets or sets the unique document identifier.

### Syntax

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

```vbnet
Public Property UniqueId As String
```

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## Nearby

- **Previous:** [SignatureDocument.TimeStamp Property](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-web-mvc-documentviewer-models/signaturedocument/timestamp-property/llms-full.txt)
- **Next:** [SignatureMergeResult Class](https://docs.textcontrol.com/tx-text-control-dotnet-server/reference/txtextcontrol-web-mvc-documentviewer-models/signaturemergeresult/llms-full.txt)