如何在不使用InternalVisibleTo的情况下从另一个程序集访问一个程序集的内部属性？

Question

Without using the signing key (.snk) is there a way to access the internal property of one assembly from another assembly ?

Thanks in advance. Arun

Answer 1

Reflection when used through strongly typed delegates isn't TOO much slow... (it should be just a little slower than virtual method calls):

Example:

public class MyClass
{
    internal int MyProperty { get; set; }
}

And then:

public static class MyClassAccessor
{
    public static readonly Func<MyClass, int> GetMyProperty;
    public static readonly Action<MyClass, int> SetMyProperty;

    static MyClassAccessor()
    {
        var prop = typeof(MyClass).GetProperty("MyProperty", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance);
        GetMyProperty = (Func<MyClass, int>)Delegate.CreateDelegate(typeof(Func<MyClass, int>), prop.GetMethod);
        SetMyProperty = (Action<MyClass, int>)Delegate.CreateDelegate(typeof(Action<MyClass, int>), prop.SetMethod);
    }
}

And you use like:

var mc = new MyClass();
MyClassAccessor.SetMyProperty(mc, 5);
Console.WriteLine(MyClassAccessor.GetMyProperty(mc));