# DrawingFrame.AddUndoUnit Method

> Add the current state of the drawing which is connected with this DrawingFrame to the undo stack. Programmatic changes performed with the drawing's properties and methods are not automatically added to a TextControl's undo stack. Calling this method is not necessary, when the drawing frame's layout in the text is changed.

- **Product:** TX Text Control .NET for WPF
- **Section:** Reference
- **Kind:** Method
- **Introduced:** 23.0
- **Namespace:** `TXTextControl.DataVisualization`
- **Package:** `TXTextControl.TextControl.WPF.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 WPF > Reference > TXTextControl.DataVisualization > DrawingFrame.AddUndoUnit Method
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/drawingframe/addundounit-method/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/drawingframe/addundounit-method/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/drawingframe/addundounit-method/llms-full.txt

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## On This Page

- [Description](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/drawingframe/addundounit-method/#description)
- [Syntax](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/drawingframe/addundounit-method/#syntax)
- [Examples](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/drawingframe/addundounit-method/#examples)

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## Nearby

- **Previous:** [DrawingFrame.Activate Method](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/drawingframe/activate-method/llms.txt)
- **Next:** [DrawingFrame Constructor](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/reference/txtextcontrol-datavisualization/drawingframe/constructor/llms.txt)