I have a generic Type as follows

public class TestGeneric<T>
{
    public T Data { get; set; }
    public TestGeneric(T data)
    {
        this.Data = data;
    }
}

If i have now an object (which is coming from some external source) from which i know that it's type is of some closed TestGeneric<>, but i don't know the TypeParameter T. Now I need to access the Data of my object. Problem is that i can't cast the object, since i don't know exactly to which closed TestGeneric.

I use

// thx to http://stackoverflow.com/questions/457676/c-reflection-check-if-a-class-is-derived-from-a-generic-class
private static bool IsSubclassOfRawGeneric(Type rawGeneric, Type subclass)
{
    while (subclass != typeof(object))
    {
        var cur = subclass.IsGenericType ? subclass.GetGenericTypeDefinition() : subclass;
        if (rawGeneric == cur)
        {
            return true;
        }
        subclass = subclass.BaseType;
    }
    return false;
}

to make sure, my object is of the generic type. The code in question is as follows:

public static void Main()
{
    object myObject = new TestGeneric<string>("test"); // or from another source
    if (IsSubclassOfRawGeneric(typeof(TestGeneric<>), myObject.GetType()))
    {
        // the following gives an InvalidCastException
        // var data = ((TestGeneric<object>)myObject).Data;

        // if i try to access the property with reflection
        // i get an InvalidOperationException
        var dataProperty = typeof(TestGeneric<>).GetProperty("Data");
        object data = dataProperty.GetValue(myObject, new object[] { });
    }
}

I need the Data regardless of its type (well, if i could ask for its type using GetType() would be fine, but not necessary) since i just want to dump it in xml using ToString().

Any suggestions? Thanx.