net481 
namespace Microsoft.Build.Exceptions
{
    public sealed class InvalidProjectFileException : BuildExceptionBase
    {
        protected override IDictionary<string, string> FlushCustomState();
    }
}
.NET Framework
4.7.24.84.8.1
Information specific to net481
Assembly

Microsoft.Build , Version=15.1.0.0, PublicKeyToken=b03f5f7f11d50a3a

Referencing

Your project needs a package reference to Microsoft.Build.

Package Microsoft.Build (18.11.0) net472
Platform Restrictions

This framework does not have platform annotations.

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  • Package-provided API