Access nested properties with dynamic lambda using Linq.Expression

Question

Let\'s assume that I have two classes:

class person
{
    int ID
    string name
    Address address
}
class address
{
    int ID
    string street
    string co         


        

Answer 1

Here's a more generic version of LukLed's answer:

    protected MemberExpression NestedExpressionProperty(Expression expression, string propertyName)
    {
        string[] parts = propertyName.Split('.');
        int partsL = parts.Length;

        return (partsL > 1) 
            ? 
            Expression.Property( 
                NestedExpressionProperty(
                    expression, 
                    parts.Take(partsL - 1)
                        .Aggregate((a, i) => a + "." + i)
                ), 
                parts[partsL - 1]) 
            :
            Expression.Property(expression, propertyName);
    }

You can use it like this:

var paramExpression = Expression.Parameter(this.type, "val");
var firstProp = NestedExpressionProperty(paramExpression,"address.street");