call a method that expects a generic type using reflection [duplicate]

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• How to use reflection to call generic Method? 6 answers

I'm trying to call a method which expects a generic type:

private Dictionary<string, ObjectComparerItem> GetDifferences<T>(T old, T actual) where T : class
{

}

I'm iterating through properties of a class and I would like to call this method passing the type of the property as the generic type T:

var properties = old.GetType().GetProperties();

foreach (var property in properties)
{

      var obj = old.GetType().GetProperty(property.Name).GetValue(old);
      var obj2 = actual.GetType().GetProperty(property.Name).GetValue(actual);

     Type T2 = property.GetType();
     var diffs = GetDifferences<T2>(obj, obj2);
}

PS: I've posted only a snippet of the code.