Visual Studio Help - The "RunCommand" property is not defined

Question

I'm using Microsoft Visual Studio Community 2017. I have created a project with multiple classes. The primary class I want the application to run first has public static void Main(string[] args) in it.

I've set properties to the following:

Target Framework: .NET standard 2.0
Output type: Console Application
Startup object: Main.Game

The error persists despite all the forums I have visited.

score 39 · Answer 1 · edited Aug 28 '23 at 16:27

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I was facing this issue in my Visual Studio 2017 15.7.2 version. The cause for this issue in my case was, unknowingly I had changed my Asp.Net Core 2.1 Web API project output type to Class Library. Changing it back to Windows Application fixed my issue.

edited Aug 28 '23 at 16:27

Shawn J. Molloy

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answered May 25 '18 at 09:37

Sibeesh Venu

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This is exactly what I did as well. Thank you! – John Washam Jun 29 '18 at 02:40
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This worked for me as well. Seems odd to call a Web API proj a Windows Application bc there is no .exe, but I guess it makes more sense than Class Library – Daniel Orlan Aug 31 '18 at 15:03

score 2 · Answer 2 · answered Sep 22 '17 at 09:47

2

Unfortunately, Microsoft has this issue open (https://github.com/dotnet/sdk/issues/833) for a long time, but has provided no answer.

answered Sep 22 '17 at 09:47

Ricardo Peres

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The community has posted some workarounds there – Saul May 19 '21 at 20:57
According to that link, this issue was fixed in .NET 4.6 back in 2019: https://github.com/dotnet/sdk/milestone/15 (even though I ran into it in .NET 7.0 today). – Shawn J. Molloy Aug 28 '23 at 16:33

score 2 · Answer 3 · edited Aug 28 '23 at 16:27

2

Try changing from netstandard2.0 to netcoreapp2.0 for Target Framework property.

edited Aug 28 '23 at 16:27

Shawn J. Molloy

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answered Aug 17 '18 at 00:52

ForcedFakeLaugh

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score 2 · Answer 4 · edited Feb 13 '22 at 02:51

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From here

Try adding the following to you <PropertyGroup>:

<AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
<RunCommand>$(MSBuildExtensionsPath64)\..\IIS Express\iisexpress</RunCommand>
<RunArguments>/path:&quot;$(MSBuildProjectDirectory)&quot; /port:18082</RunArguments>

edited Feb 13 '22 at 02:51

KennetsuR

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answered Feb 07 '22 at 09:29

Netanel Livni

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score 1 · Answer 5 · answered May 30 '22 at 07:30

My Solution contain more than one projects : Client(Angular) project, Server(API) side project and other project. In solution, "Single startup project", its set to Client(Angular) project, which cause issue.

I have updated and set Server side(API) project as "Single startup project". Rebuild solution and error "RunCommand" property is not defined"resolved.

Select Solution > Property > this setting screen available.

score 0 · Answer 6 · edited Oct 16 '21 at 16:05

It's usual in Visual Studio.

You have to do 3 things to solve this. In some cases one is enough but sometimes three of them is required.

Open proj.csproj file in the root of the project (if you see no files, try to use ctrl+F to search the solution and find it)

Try to add this <Project Sdk="Microsoft.NET.Sdk.web">
Open your project and right-click on the project main root and go properties then from the right block select application and the from the white box there select output type to class library.
Try to clean and build the entire solution again.

Visual Studio Help - The "RunCommand" property is not defined

6 Answers6

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