> For the complete documentation index, see [llms.txt](https://guide.cronuszen.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://guide.cronuszen.com/gpcscripting/gpc-script-guide/gpc-developer-guide/api-samples/sendmsgappsample.md).

# SendMsgAppSample

SendMsgAppSample is an app for people writing external GPC applications that can use to send commands to Zen Studio.

To run the app as-is you need to have the following installed:

* [Visual Studio](https://visualstudio.microsoft.com/downloads/) / [JetBrains Rider](https://www.jetbrains.com/rider/)
* [.NET SDK](https://dotnet.microsoft.com/en-us/download)
* [.NET Framework 4.5.2](https://dotnet.microsoft.com/en-us/download/dotnet-framework/net452)

Make sure Zen Studio is running while you run the app.

{% file src="/files/rZfIclnoXt7EQAOBg6SS" %}


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