Pretty silent these days eh? I am working on a big refactoring on DictionaryDifference and have not much time to blog. But have another tip for my Xaf Tips series today maybe not strictly Xaf but is an XPO tip that you can use with your Xaf applications . The Problem Suppose your are a strongly typed fun like me or you want to use linq to ...

Today i stump again upon the same problem . I wanted to throw a validation exception only if both of my properties do not have value. So lets create a validation rule for this one. More info on how we create custom validation rules can be found here Validation Module Since we are talking about multiple property values i think we should go with an ...

  The problem Xpo in order to support transactions implements some special kind of property setters like private string lastName; public string LastName { get { return lastName; } set { string oldValue = lastName; if (oldValue == value) return; lastName = value; ...