lzby's group

But here's what Chappell had to say about your experience as a developer: experience is only useful if the future is like the present (yep, another maxim). Naturally, he thinks your experience could prove a detriment if you rely on it too much. So if you're just getting started, you actually may have advantages over the old-timers who come to .NET with their old coding ways and expectations.

Let’s assume you have a 100 page website. On the bottom of all 100 pages you have secondary navigation, copyright information, and a link to your privacy policy. If we decide to add an additional link to the footer navigation one day, it would really suck to make the update 100 times by copying and pasting code into every file. Luckily, if we use ASP.NET includes, we only need to make the update once.

回头再看看那个两页长的函数。是的，我知道它只完成了显示窗口这个简单功能，但是它已经增加了一些东西，没有人知道是为什么。好，我来告诉你为什么：它们是对缺陷的修复。[……]

Silverlight还在剧烈变化当中，除了技术粉丝之外，实践当中的开发者还不敢把真实产品架构在这款尚未定型的技术上

就是这个原因。在使用ADO.NET时，如果SqlParameter的Type是nvarchar，并且没有指定Size属性，则可能就会因为具体参数的尺寸不同而造成查询计划无法复用的结果。这一点，很多人都忽视了。

不过我们还是幸运的，因为我根据我的经验，似乎在查询条件中使用长度不等的字符串作为参数的情况并不多见。不是么？

A couple of examples: If you hover over the i in the above example it will tell you i is used before it is set. if you hover over the Foo in the above example it will tell you no such method exists. 

UrlRewriter.NET is a pure .NET component written in C#, and does not require any ISAPI rewrite dll’s to be installed in IIS. You configure rules in a very readable XML format, either in your web.config file or an external rewriter configuration file.

Now instead of error message add the image tag as shown below. <img src=alert.gif' style='width:15px;height:15px;'> Note : Image tag doesn't have have an end tag. So don't add. Then in test your page that shows images for errors. See the picture below. Know More: You can also embed sound instead of error message or error image. <asp:RequiredFieldValidator ControlToValidate="TextBox1" EnableClientScript="false" ID="RequiredFieldValidator1" runat="server" Text="<bgsound src='C:\Windows\Media\Windows Error.wav'>"></asp:RequiredFieldValidator> Just make sure that the EnableClientScript="false"  when you want a sound instead of a text message.

One of the problems with the calendar extender in the 1.0 toolkit is that if I use a button/image to show the calendar, I am forced to click on it again to hide the calendar.

总的来说，ADO.NET 数据服务框架的目标是为那些公开和使用以数据为中心的服务，创建基于具象状态传输 (REST) 的简单框架。此类服务使用统一的界面公开数据，以供整个企业 Intranet 或 Internet 范围内的所有 Web 客户端使用。该框架由一个服务器库和一组客户端库组成，前者用于将数据作为服务安全公开，后者是为一系列 Microsoft 应用程序和技术（Microsoft? .NET Framework和Silverlight 等）能够使用服务而构建的。

能够使HTML代码（在这个例子中就是我们的input标签）保持干净，并为开发者提供单一引用点来调试 JavaScript代码。低调JavaScript提倡将代码存储在外部的.js文件中，反对将其嵌入在HTML页面内

那么，我的建议是只有当你不知道类型的时候，才使用var。这里是我不同的见解和用法。请看如下代码片断： var procs = from p in ServiceController.GetServices() where p.Status == ServiceControllerStatus.Running select p; procs.ToList().ForEach(p=> Console.WriteLine(p.ServiceName)); procs的类型无疑为IEnumerable<ServiceController>，然而这却与我无关。我首先关注的是procs是一个列表，列表中的每一项都具有一个属性ServiceName。潜在的类型对于编译器很重要，而那些不得不去阅读代码的人们却不是编译器，对吗？