Debug msbuild custom task with msbuild v15.0











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Microsoft's instructions for enabling debugging of MSBuild tasks no longer seem to work. I cannot get msbuild /? to show the /debug switch, and when I try dotnet publish /debug it complains that /debug is not a valid switch.



Is there any way to debug MSBuild tasks any more?










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    up vote
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    down vote

    favorite












    Microsoft's instructions for enabling debugging of MSBuild tasks no longer seem to work. I cannot get msbuild /? to show the /debug switch, and when I try dotnet publish /debug it complains that /debug is not a valid switch.



    Is there any way to debug MSBuild tasks any more?










    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Microsoft's instructions for enabling debugging of MSBuild tasks no longer seem to work. I cannot get msbuild /? to show the /debug switch, and when I try dotnet publish /debug it complains that /debug is not a valid switch.



      Is there any way to debug MSBuild tasks any more?










      share|improve this question













      Microsoft's instructions for enabling debugging of MSBuild tasks no longer seem to work. I cannot get msbuild /? to show the /debug switch, and when I try dotnet publish /debug it complains that /debug is not a valid switch.



      Is there any way to debug MSBuild tasks any more?







      msbuild .net-core






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      asked Nov 21 at 19:26









      tacos_tacos_tacos

      5,841755107




      5,841755107
























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          The /debug feature for msbuild was removed from public builds of MSBuild 15 and the code for it has later been removed entirely.



          To "debug" logic in your build targets / msbuild files, your best option is to create binary logs using the -bl argument and inspecting them using the MSBuild Structured Log Viewer. It shows you all the inputs/outputs to task invocation and all the steps that happen during Msbuild runs.



          Debugging custom tasks (e.g. C# code) is very hard to do. It would involve looping+sleeping until Debugger.IsAttached is true for debug builds (and then attaching to the process in Visual Studio) or calling Debugger.Launch() (only on .NET Framework, not .NET Core MSBuild).



          I suggest separating the actual task class from your logic implementation to allow you to unit test your logic. This should remove the need to debug it during runs.



          You can see a sample of both the debugger logic and the separation in NuGet's PackTask and its PackTaskLogic class.






          share|improve this answer





















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            1 Answer
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            active

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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            1
            down vote



            accepted










            The /debug feature for msbuild was removed from public builds of MSBuild 15 and the code for it has later been removed entirely.



            To "debug" logic in your build targets / msbuild files, your best option is to create binary logs using the -bl argument and inspecting them using the MSBuild Structured Log Viewer. It shows you all the inputs/outputs to task invocation and all the steps that happen during Msbuild runs.



            Debugging custom tasks (e.g. C# code) is very hard to do. It would involve looping+sleeping until Debugger.IsAttached is true for debug builds (and then attaching to the process in Visual Studio) or calling Debugger.Launch() (only on .NET Framework, not .NET Core MSBuild).



            I suggest separating the actual task class from your logic implementation to allow you to unit test your logic. This should remove the need to debug it during runs.



            You can see a sample of both the debugger logic and the separation in NuGet's PackTask and its PackTaskLogic class.






            share|improve this answer

























              up vote
              1
              down vote



              accepted










              The /debug feature for msbuild was removed from public builds of MSBuild 15 and the code for it has later been removed entirely.



              To "debug" logic in your build targets / msbuild files, your best option is to create binary logs using the -bl argument and inspecting them using the MSBuild Structured Log Viewer. It shows you all the inputs/outputs to task invocation and all the steps that happen during Msbuild runs.



              Debugging custom tasks (e.g. C# code) is very hard to do. It would involve looping+sleeping until Debugger.IsAttached is true for debug builds (and then attaching to the process in Visual Studio) or calling Debugger.Launch() (only on .NET Framework, not .NET Core MSBuild).



              I suggest separating the actual task class from your logic implementation to allow you to unit test your logic. This should remove the need to debug it during runs.



              You can see a sample of both the debugger logic and the separation in NuGet's PackTask and its PackTaskLogic class.






              share|improve this answer























                up vote
                1
                down vote



                accepted







                up vote
                1
                down vote



                accepted






                The /debug feature for msbuild was removed from public builds of MSBuild 15 and the code for it has later been removed entirely.



                To "debug" logic in your build targets / msbuild files, your best option is to create binary logs using the -bl argument and inspecting them using the MSBuild Structured Log Viewer. It shows you all the inputs/outputs to task invocation and all the steps that happen during Msbuild runs.



                Debugging custom tasks (e.g. C# code) is very hard to do. It would involve looping+sleeping until Debugger.IsAttached is true for debug builds (and then attaching to the process in Visual Studio) or calling Debugger.Launch() (only on .NET Framework, not .NET Core MSBuild).



                I suggest separating the actual task class from your logic implementation to allow you to unit test your logic. This should remove the need to debug it during runs.



                You can see a sample of both the debugger logic and the separation in NuGet's PackTask and its PackTaskLogic class.






                share|improve this answer












                The /debug feature for msbuild was removed from public builds of MSBuild 15 and the code for it has later been removed entirely.



                To "debug" logic in your build targets / msbuild files, your best option is to create binary logs using the -bl argument and inspecting them using the MSBuild Structured Log Viewer. It shows you all the inputs/outputs to task invocation and all the steps that happen during Msbuild runs.



                Debugging custom tasks (e.g. C# code) is very hard to do. It would involve looping+sleeping until Debugger.IsAttached is true for debug builds (and then attaching to the process in Visual Studio) or calling Debugger.Launch() (only on .NET Framework, not .NET Core MSBuild).



                I suggest separating the actual task class from your logic implementation to allow you to unit test your logic. This should remove the need to debug it during runs.



                You can see a sample of both the debugger logic and the separation in NuGet's PackTask and its PackTaskLogic class.







                share|improve this answer












                share|improve this answer



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                answered Nov 21 at 23:27









                Martin Ullrich

                41.7k7105118




                41.7k7105118






























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