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 公告 |
06 2010 档案摘要: Summary Ning Xu is the architect manager of PFS group in State Street Technology (Zhejiang). Mr. Xu is responsible for implementing the architecture design of new system with the help of PFS team in Princeton. He has worked in Princeton for four months with onsite architecture team. In last 5 year..阅读全文 posted @ 2010-06-23 20:10 idior 阅读(788) | 评论 (0) 编辑 | 摘要: 协变和逆变，这两个词的翻译实在很难表达出他们的真实含义。其实他们是继承和多态的衍生物，而且在.Net 1.0 和2.0中都提供了某种程度的支持，只是在.Net 4.0中支持的更加完善了。 简单说来，协变和逆变就是希望支持更多情况的隐式类型转换,使得我们的编程更加方便，而通常来说只有具备继承关系的两个对象才可以发生隐式类型转换，如Base b=new Derived(). 协变和逆变则使得更多的类...阅读全文 posted @ 2010-06-20 14:36 idior 阅读(2062) | 评论 (8) 编辑 | 摘要: How does ElementName Binding work? - Part 1 Logical Tree & NameScopeHow does ElementName Binding work – Part 2 BindingExpressionHow does ElementName Binding work – Part 3 InheritanceCo...阅读全文 posted @ 2010-06-14 14:49 idior 阅读(394) | 评论 (0) 编辑 | 摘要: Actually there are several questions in this post, though all of them are about DataContext inheritance. I think you will have have fun with these questions, if anyone can explain what's going on here...阅读全文 posted @ 2010-06-13 20:16 idior 阅读(469) | 评论 (0) 编辑 | 摘要: In this part, I am going to introduce a new concept called InheritanceContext. In WPF, there are some elements are not FrameworkElement or even Visual, which means they will not be shown on either Log...阅读全文 posted @ 2010-06-12 15:19 idior 阅读(1342) | 评论 (1) 编辑 | 摘要: In part 1, I gave a general finding rule for ElementName binding, it works in most cases, however there are some cases you cannot explain them with the general rule. I will cover some of them in the f...阅读全文 posted @ 2010-06-07 20:28 idior 阅读(1242) | 评论 (0) 编辑 | 摘要: The existing documentation about the visual tree and logical tree in the Windows SDK leaves much to be desired. Ever since I started with WPF, I have felt unsure about what exactly differentiates the ...阅读全文 posted @ 2010-06-04 21:14 idior 阅读(1561) | 评论 (1) 编辑 | 摘要: When using normal C# events, registering an event handler creates a strong reference from the event source to the listening object.If the source object has a longer lifetime than the listener, and th...阅读全文 posted @ 2010-06-04 16:48 idior 阅读(1649) | 评论 (5) 编辑 |
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