What is ASP.NET
ASP.NET is a unified Web development model that includes the services necessary for you to build enterprise-class Web applications with a minimum of coding. ASP.NET is part of the .NET Framework, and when coding ASP.NET applications you have access to classes in the .NET Framework. You can code your applications in any language compatible with the common language runtime (CLR), including Microsoft Visual Basic, C#, JScript .NET, and J#. These languages enable you to develop ASP.NET applications that benefit from the common language runtime, type safety, inheritance, and so on.
ASP.NET includes:
A page and controls framework
The ASP.NET compiler
Security infrastructure
State-management facilities
Application configuration
Health monitoring and performance features
Debugging support
An XML Web services framework
Extensible hosting environment and application life cycle management
An extensible designer environment
本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/chimomo/archive/2009/09/04/4519542.aspx
在掌握服务器控件生命周期的过程中，读者要特别注意有关服务器控件状态的相关内容。在重点了解生命周期各个阶段的同时，对服务器控件的状态变化要注意以下问题：控件的生命周期何时保存控件和恢复其状态；何时与页面及其他控件之间进行交互；何时执行重要的处理逻辑；在各个阶段，控件可使用哪些信息、保持哪些数据、 ......
假定有一个Product表，字段有（Id,Name,Quantity,...）将Quantity列用textbox格式来显示：
首先在Gridview中，Quantity列以TemplateField显示，其他的列属性设为只读，把显示格式设为TextBox
<asp:TemplateField HeaderText="Quantity">
<ItemTemplate>
&nbs ......
