A WCF error occurred.

A WCF error occurred.

I haven't done the WCF for a long time. I got a project in the past two days and found that the class cannot be transmitted to the server when it is passed as a parameter, and no error is reported. The results have been tried many times and Baidu has gone over it. Some people say that the namespace is the same, but there are still problems with the namespace, later, I simply extracted all the classes used by these servers and clients into a class library, and both the front and back use the same class library. Solve the problem.

The use of Microsoft's service contract should be able to solve the problem. However, this method is troublesome, but it is still a bit more straightforward.

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