private void button1_Click(object sender, EventArgs e)
{
        Ifoo  = foo Foo();

        // Create input parameter for lambda
        ParameterExpression value = Expression.Parameter(typeof(IFoo),
"value");

        // create return statement for lambda
        Expression setupProperty =
Expression.Return(Expression.Label(), Expression.Property(value,
"Bar"), typeof(string));

        // convert expression to lambda (should now be the equivalent
of "v => v.Bar")
        var func = Expression.Lambda<Func<IFoo,
string>>(setupProperty, value);//.Compile();
        //string s = func(foo); // this bit works fine in .Compile()
is included

        var mockFoo = new Mock<IFoo>();

        mockFoo.SetupProperty(func); // exception thrown by moq here,
obviously isn't exactly the same as "v => v.Bar"
        mockFoo.Object.Bar = "Burge+";