Learning to build a multi framework project with VS, as shown in the following figure:
The project contains two target frameworks. Net 2.0 and 4.0. The problem now is that I have just changed the project to multi framework, and the references of each framework have changed to the figure. There are three problems:
- I didn’t quote it System.Core/Numerics Wait for assemblies, why do they appear in them? How to delete?
- The assemblies referenced by. NET2.0 are all 4.0 GAC, as shown in the figure System.dll How to make. NET2.0 reference GAC of 2.0?
- In the code, I clearly chose net20. Why can I use the net40 class like task? As shown in the figure:
Of course, this may be the same reason as question 2. Please help, thank you.