Run parallel build of Microsoft.Build.Evaluation.Project from C#

Question

Good morning. Please help me with msbuild.

I have many loaded csproj in array of Microsoft.Build.Evaluation.Project. I changed same properties in projects. How run parallel build of my projects?

When I run project.Build() in many threads, I received exception "The operation cannot be completed because a build is already in progress.".

I can't save projects on disk, becouse I change property, that need only for me.

you changed "some" properties, which ones?

roundcrisis
– roundcrisis

2012-12-03 13:54:13 +00:00
Commented Dec 3, 2012 at 13:54 — roundcrisis
– roundcrisis, Commented Dec 3, 2012 at 13:54

ekarankow · Accepted Answer · 2013-07-18 10:41:30Z

You can call only one Build() function per process. So you need to synchronize all Build() call. Something like that:

static class ProjectBuildSync { private static readonly object _syncObject = new object(); public static bool Build(Project project) { lock (_syncObject) return project.Build(); } } ... ProjectBuildSync.Build(project); ...

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