Extension method for strongly typed property access

I have the following class hierarchy

class Test
{
    public string Name { get; set; }
}

class TestChild : Test
{
    public string Surname { get; set; }
}

I can't change the Test class. I want to write following extension method like this:

static class TestExtensions
{
    public static string Property<TModel, TProperty>(this Test test, Expression<Func<TModel, TProperty>> property)
    {
        return property.ToString();
    }
}

To be able to use it in the following way:

class Program
{
    static void Main(string[] args)
    {
        TestChild t = new TestChild();
        string s = t.Property(x => x.Name);
    }
}

But now compiler says

The type arguments for method 'ConsoleApplication1.TestExtensions.Property(ConsoleApplication1.Test, System.Linq.Expressions.E开发者_C百科xpression>)' cannot be inferred from the usage. Try specifying the type arguments explicitly.

I want to have something like mvc Html.TextBoxFor(x => x.Name) method. Is it possible to write extension to be used as shown in the Main method?

---

You need to specify the generic arguments for the call, that's all:

string s = t.Property<TestChild, string>(x => x.Name);

EDIT:

My fault. I missed the real problem:

public static string Property<TModel, TProperty>(this TModel model, Expression<Func<TModel, TProperty>> property)
{
    return property.ToString();
}

This should make it so you can omit the generic arguments. I assume you are also processing real code in this method to get the property name? If not, you may actually want this:

public static string Property<TModel, TProperty>(this TModel model, Expression<Func<TModel, TProperty>> property)
{
    var memberExpression = property.Body as MemberExpression;
    return memberExpression.Member.Name;
}

---

static class TestExtensions
{
    public static string Property<TModel, TProperty>(this TModel test, Expression<Func<TModel, TProperty>> property)
    {
        return property.ToString();
    }
}

The compiler should be able to infer the first argument...