Invoke a generic method for properties which are known at runtime

public partial class ReturnHeader
{
        public int ReturnHeaderId { get; set; }
        public int CustomerId { get; set; }
        public string InvoiceNo { get; set; }
        public virtual Customer Customer { get; set; }
        public virtual ICollection<ReturnDetail> ReturnDetails { get; set; }
}

public void TraverseThroughClass<T> (T entity) where T : class
{
 try
 {
  var type = typeof(T);
  PropertyInfo[] props = type.GetProperties();
  comparedEntityHashSets.Add(entity.GetHashCode());
  foreach (PropertyInfo prop in props)
  {
   if (typeof(IEnumerable).IsAssignableFrom(prop.PropertyType) 
            && !comparedEntityHashSets.Contains(prop.GetHashCode()))
   {

This check determines whether the property is a list or not. Ignore comparedEntityHashSets. Issue 1: if true, cast it into list or any collection.

    var propertiesValues = prop.GetValue(this) as IList;
    var listType = GetCollectionItemType(prop.PropertyType);
    foreach (var listItem in propertiesValues)
    {

Issue 2:For each item in collection call TraverseThroughClass (T entity)

    }
  }
  else
  {
   Console.WriteLine("Prop Name : " + prop.Name + " Prop Value : " 
            + prop.GetValue(entity, null));
  }
}
 }
 catch (Exception e)
 {
  throw;
 }
}     

 public static Type GetCollectionItemType(Type collectionType)
 {
  var types = collectionType.GetInterfaces()
            .Where(x => x.IsGenericType
                && x.GetGenericTypeDefinition() == typeof(IEnumerable<>))
            .ToArray();
        return types.Length == 1 ? types[0].GetGenericArguments()[0] : null;
    }