自动属性无法在C＃实例构造函数中初始化

Question

I need a sanity check to determine whether my C# compiler is broken or I'm not understanding how automatic properties are supposed to work.

Given the following class definition and constructor, note the respective member values.

public class MyClass
{
    public string MyString { get; set; }
    public string _anotherString;

    public MyClass()
    {
        MyString = "some value";
        // <--- debugger shows MyString as null

        _anotherString = "another value";
        // <--- debugger shows _anotherString as "another value"
    }
}

This continues to happen with a variety of classes. In short, all automatic properties fail to initialize when assigning values in the constructor. They work everywhere else. However, if I change them to use backing stores and initialize the backing variable, they are initialized properly.

Am I correct in assuming that it is always safe to initialize automatic properties in the constructor, or am I missing something? And if it is, then what could be going on with Visual Studio?

Answer 1

Have you tried with a fresh new project? Did you CLEAN the solution (Build > Clean Solution), close all opened documents/tabs and then do a rebuild (not a build, rebuild!) and try again?

Answer 2

I determined that this was caused by a conflict between two PostSharp aspect attributes. Not a problem with PostSharp, but with a custom attribute I had created to intercept property assignments. Removing the extra attribute allowed it to work normally.

Essentially, when there are multiple aspects applied to the same object, PostSharp does some tricky maneuvers when "weaving" the generated code. Still trying to determine how to fix it, but at least I'm not going completely insane.