VS Arduino - Mixed Arduino/C# Solution

Oct 26^th, 2025 at 2:51pm (UTC)

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VS Arduino › › › Mixed Arduino/C# Solution

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Mixed Arduino/C# Solution (Read 2455 times)

Nathan Phillips Newbies Offline Posts: 7 Joined: Jan 6^th, 2020	Mixed Arduino/C# Solution Jan 6^th, 2020 at 11:06am	Print Post
	Is having a solution with a Visual Micro project in it as well as a C# desktop project supported? If so what might I be doing wrongly? Whenever I try to debug the C# project, Visual Micro steps in and builds/runs the Arduino project.
	« Last Edit: Jan 6^th, 2020 at 11:37am by Nathan Phillips »

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Tim@Visual Micro Administrator Offline Posts: 12201 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Mixed Arduino/C# Solution Reply #1 - Jan 6^th, 2020 at 11:20am	Print Post
	Which is the startup project? If you din't know then also say and I will explain.
	« Last Edit: Jan 6^th, 2020 at 11:21am by Tim@Visual Micro »

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Nathan Phillips Newbies Offline Posts: 7 Joined: Jan 6^th, 2020	Re: Mixed Arduino/C# Solution Reply #2 - Jan 6^th, 2020 at 11:38am	Print Post
	I had left the C# project as the startup project but setting it to the Arduino project and explicitly selecting the C# project to debug still builds/runs the Arduino project.


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Tim@Visual Micro Administrator Offline Posts: 12201 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Mixed Arduino/C# Solution Reply #3 - Jan 6^th, 2020 at 11:41am	Print Post
	If you set the c# project as the startup project debug>start should debug the c# project. F5/Debug start always uses the startup project this is how Vs works. Do you agree? I know there might be more to this discussion but my question is to establish the facts one by one.
	« Last Edit: Jan 6^th, 2020 at 11:42am by Tim@Visual Micro »

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Nathan Phillips Newbies Offline Posts: 7 Joined: Jan 6^th, 2020	Re: Mixed Arduino/C# Solution Reply #4 - Jan 6^th, 2020 at 2:05pm	Print Post
	I agree that's how I would expect it to work. Do you see this behaviour when you try it? If so then perhaps you could send a solution file where it works. I'm using VS 2019. Alternatively I could try creating new solution files with different combinations of projects to see if I can find a combination where it works.


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Tim@Visual Micro Administrator Offline Posts: 12201 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Mixed Arduino/C# Solution Reply #5 - Jan 6^th, 2020 at 5:01pm	Print Post
	I looked at this and the only time the arduino project starts is when arduino code is the active code in the code editor. If the c# code is active then start debug for specific project works for me regardless of startup project. You can change this functionality by switching off "vMicro>General>Active Code Has Priority over Soltion Explorer". The default is ON but users like yourself who know what a Visual Studio Startup Project is might prefer it OFF. OFF is confusing for Arduino users wo don't know VS, they expect build and upload to be related to the code they are currently editing. In future releases we might be able to improve the difference between specific project start and general start, but my suggestion above should resolve for you?


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Nathan Phillips Newbies Offline Posts: 7 Joined: Jan 6^th, 2020	Re: Mixed Arduino/C# Solution Reply #6 - Jan 6^th, 2020 at 8:48pm	Print Post
	Goodness - that was it - this is actually the way visual micro is designed to work. That is so completely not what I would expect. If I click on a project and select Debug I don't expect a different project to run. Anyway, thank you for answering my query, I will continue to try out your software for my current project.


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Tim@Visual Micro Administrator Offline Posts: 12201 Location: United Kingdom Joined: Apr 10^th, 2010	Re: Mixed Arduino/C# Solution Reply #7 - Jan 6^th, 2020 at 9:02pm	Print Post
	In Visual Studio it is possible to be editing code open from Project A yet to select Project B in the solution explorer. For most users that is a confusing an alien concept. If they are editing the code of Project A and they press F5 they expect Project A to be uploaded. This is not what you want to happen. In your case you want to be able to be editing Project A and press F5 causing Project B to be uploaded. No possibility to upload the currently edited code without clicking the Solution Explorer (which in itself is an alien concept to most Arduino users) It makes more sene to give the simple use as default and allow more advanced users to know what setting they might be looking for or at least understand the words required to ask on the forum. I am sure you can imaging the reports would be "Help, when I edit my code and press F5 (or Debug>Start/Green Arrow) a different project is uploaded" Your report was easier to explain


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