Assembly error

蔡包子

I added a new class to a project today, and then call the method inside it. System.TypeLoadException: Failed to load the type DataAccessObject.Class3 from the assembly DataAccessObject, Version = 1.0.2551.30557, Culture = neutral, PublicKeyToken = null .
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It's not wrong to use the previous ones, everything is new. What's going on ~~~~~~~~~~~

苹果小刀

It is recommended to try to clean up the project!

shenmue024

Delete all dll. and regenerate it.

蔡包子

The dll has been deleted

蔡包子

Is there any way

wdh3139593

You modified the class project, vs.net failed to reflect the latest changes in winApp. The possible reason is that vs.net believes that the class has not changed. If it is a strong name, this problem does not exist. You can clean the solution or delete all files in the obj directory.
  TypeLoadException occurs when the type information is generated, and an exception may occur when a static variable instance is generated. Because type information and static construction are run by independent system threads, your code cannot catch exceptions. The only place in the code that can catch this exception is in the AppDomain.UnhandledException event

蔡包子

clean solution------------What does this mean and how to do it, I deleted the content in obj, it is useless

蔡包子

It was found out that the same file name appeared in different class projects. .net will not give any prompts, and simply do not compile and use the original one.