如何在C＃项目中以编程方式（例如在预生成事件中）以编程方式设置Visual Studio 2015的OutDir属性？

Question

I need to set the "Output Path" field (which becomes $(OutDir)) of a VS 2015 C# project to a path that is elsewhere defined in an environment variable XX_OUT_DIR.

Setting the value of the textbox in the project properties build page to %XX_OUT_DIR%, or any permutation thereof, eg "%XX_OUT_DIR%", doesn't work - it just creates an "%XX_OUT_DIR%" directory when building, ie treating it as a string rather than resolving it to the text contained in the environment variable.

I know in pre-build events, these environment variables are correctly resolved to their value.

But, I cannot find a way to SET the value of OutDir as a pre-build event. I can only read it, which doesn't help me...

Any ideas?

Thank you!

Answer 1

You can change the value of $(OutDir) either from within by editing the csproj file and changing the value. You can create a special build configuration and use the Condition attribute to handle your special circumstances. The rest of the setting could remain the same.

<OutDir Condition=" '$(Configuration)' == 'Special' ">C:\MyDir</OutDir>