# Dispatcher and UI Thread Access

> Which TX Text Control objects belong to the WPF UI thread, how documents cross threads as byte arrays, and CheckAccess and InvokeAsync for the TextControl.

- **Product:** TX Text Control .NET for WPF
- **Section:** Documentation
- **Kind:** Topic
- **Path:** TX Text Control .NET for WPF > Performance > Dispatcher and UI Thread Access
- **Web URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/performance/dispatcher/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/performance/dispatcher/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-dotnet-wpf/performance/dispatcher/llms-full.txt

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## On This Page

- [How WPF Assigns Controls to Threads](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/performance/dispatcher/#how-wpf-assigns-controls-to-threads)
- [Hand a Document to Another Thread](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/performance/dispatcher/#hand-a-document-to-another-thread)
- [Get Back to the UI Thread With the Dispatcher](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/performance/dispatcher/#get-back-to-the-ui-thread-with-the-dispatcher)
- [Keep the Dispatcher Free](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/performance/dispatcher/#keep-the-dispatcher-free)
- [Next Steps](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/performance/dispatcher/#next-steps)

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## Nearby

- **Previous:** [Performance](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/performance/llms.txt)
- **Next:** [Background Operations](https://docs.textcontrol.com/tx-text-control-dotnet-wpf/performance/background-operations/llms.txt)