问题
When I try to debug my Windows Phone 8.1 project the Locals window is empty, and Watch shows an error for this:
this error CS0012: The type 'TaskAwaiter<>' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Threading.Tasks, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'.
Everything else seems to work just fine, there are no errors/warnings related to this, it happens only while debuging. And also not for all projects.
I've tried a few fixes I found on Stack and MDSN, but:
- Adding
<CheckForSystemRuntimeDependency>true</CheckForSystemRuntimeDependency>didn't change anything; - Debug > Options > General > Use legacy VB and C# something is greyed out.
Is there anything else I can try?
回答1:
This is a known issue in Visual Studio 2015.
Workaround: enable the legacy C# and VB expression evaluators. (You got that right.)
Tools > Options > Debugging > General > Use the legacy C# and VB expression evaluators
Important: You cannot check the box during debugging!
来源：https://stackoverflow.com/questions/32053129/error-cs0012-the-type-taskawaiter-is-defined-in-an-assembly-that-is-not-ref