Combine Lambda Expressions

Question

I am looking for a way to combine two lambda expressions, without using an Expression.Invoke on either expression. I want to essentially build a new expression

Answer 1

Update: the below answer generates an "Invoke" which EF does not support.

I know this is an old thread, but I have the same need and I figured out a cleaner way to do it. Assuming that you can alter your "expression2" to user a generic lambda, you can inject one like this:

class Program
{
    private static Expression> GetValueFromFoo(Func getFoo)
    {
        return t => getFoo(t).Bar.Value;
    }

    static void Main()
    {
        Expression> getValueFromBar = GetValueFromFoo(m => m.SubModel.Foo);

        // test it worked
        var func = getValueFromBar.Compile();
        Model test = new Model
        {
            SubModel = new SubModel
            {
                Foo = new Foo
                {
                    Bar = new Bar { Value = "abc" }
                }
            }
        };
        Console.WriteLine(func(test)); // "abc"
    }
}