How do I get all subclass properties based on name

Question

I have the following structure:

 public class A
 {
    public A1Type A1 { get; set; }
    public A2Type A2 { get; set; }
    public A3Type A3 { get; set; }
  }

  public A1Type
  {
    public string B1 { get; set; }
    public string B2 { get; set; }
  }

And similar with A1Type is also A2Type and A3Type. I have a more complex structure.

I receive a string parameter A1Type and I need to get from A just the subclass A1Type with its values.

Can somebody help me with this?

Answer 1

This might do what you want:

class Program
{
    static void Main(string[] args)
    {
        var a = new A()
        {
            A1 = new A1Type() { B1 = "A1Type B1 prop value", B2 = "A1Type B2 prop value" },
            A2 = new A2Type() { B1 = "A2type B1 prop value", B2 = "A2Type B2 prop value" },
            A3 = new A3Type() { B1 = "A3Type B1 prop value", B2 = "A3Type B2 prop value" }
        };
        ListPropertyValuesOf("A1Type", a);
        ListPropertyValuesOf("A2Type", a);
        ListPropertyValuesOf("A3Type", a);
    }

    static void ListPropertyValuesOf(string propName, A classA)
    {
        // get all properties of classA object
        var props = classA.GetType().GetProperties();
        foreach (var prop in props)
        {
            if (prop.PropertyType.Name == propName)
            {
                // get the specific sub-type object on classA
                var subClassA = classA.GetType().GetProperty(prop.Name).GetValue(classA);

                // loop each of the properties on subClassA and write its value
                foreach (var subProp in subClassA.GetType().GetProperties())
                    Console.WriteLine(subProp.GetValue(subClassA));
            }
        }
    }
}

public class A
{
    public A1Type A1 { get; set; }
    public A2Type A2 { get; set; }
    public A3Type A3 { get; set; }
}
public class A1Type
{
    public string B1 { get; set; }
    public string B2 { get; set; }
}

public class A2Type
{
    public string B1 { get; set; }
    public string B2 { get; set; }
}

public class A3Type
{
    public string B1 { get; set; }
    public string B2 { get; set; }
}