get a list of single property values in c# - reflection

Question

I am struggling to understand how a reflection works in C#. I set a property of class name. When I use a method (below) to validate, i need to get a list of ProductName values. How to do this?

public class Product
{
    public string ProductName
    {
        get;
        set;
    }
}

public class ClassName
 {
    public List<Product> Products
    {
        get;
        set;
    }
 }

App:

product.Add(new Product { ProductName = "whatever name 1" });
product.Add(new Product { ProductName = "whatever name 2" });

Method:

public bool Validate(object obj)
{
        PropertyInfo property = typeof(ClassName).GetProperty("Products");

        Value = (string)property.GetValue(obj, null); // how to get a list of values 
}

Answer 1

You have to cast it to List<Product> :

public bool Validate(object obj) {
  if(!(obj is ClassName)) return false;
  PropertyInfo property = typeof(ClassName).GetProperty("Products");  
  Value = (List<Product>)property.GetValue(obj, null);
  return true;//or your own validation implemented here
}