T4 Templates: A QuickStart Guide for ASP.NET MVC Developers

本文链接：http://blogs.msdn.com/webdevtools/archive/2009/01/29/t4-templates-a-quick-start-guide-for-asp-net-mvc-developers.aspx

简单地说，这是一套业界比较认可的代码生成机制。T4的意思是：Text Template Transformation Toolkit

MVC使用了T4作为代码生成模板，它的目的是让用户可以定制Controller和View模板。

这些模板在下面的目录

F:\Program Files\Microsoft Visual Studio 9.0\Common7\IDE\ItemTemplates\CSharp\Web\MVC 2\CodeTemplates\

模板里面的大致如下

那么，在模板中，可以使用的一些特殊变量主要包含什么呢？请看下面的介绍

Add Controller:

Property Name	Type	Description
ItemName	System.String	The name of the Controller class, including the ‘Controller’ suffix
NameSpace	System.String	The namespace into which the Controller is being generated
ExtraActionMethods	System.Boolean	Indicates whether or not the user checked the option in the Add Controller dialog to get extra action methods
ControllerRootName	System.String	The name of the controller class without the ‘Controller’ suffix

Add View:

Property Name	Type	Description
ItemName	System.String	The name of the view (without extension), as typed in the Add View dialog
NameSpace	System.String	The default namespace of the view’s parent folder
IsViewUserControl	System.Boolean	Evaluates to true if the user chose a partial view in the Add View dialog
IsViewContentPage	System.Boolean	Evaluates to true if the user is creating a view with a master page
IsViewPage	System.Boolean	Evaluates to true if the user is creating a regular view page
MasterPage	System.String	Path to the master page the user chose in the dialog (to be used only when IsViewContentPage is true)
ContentPlaceholder	System.String	Name of the primary content place holder into which the generated content will be placed. This is the content place holder id the user typed into the Add View dialog
ContentPlaceHolders	System.Collections.Generic.List<System.String>	A list of all content place holder ID’s in the master page, if a master page was chosen for this view
LanguageExtension	System.String	The output file’s extension (including the period)
ViewDataTypeGenericString	System.String	This is a string that is used to output the generics clause for the ‘Inherits’ attribute in the view's directive (for strongly-typed views).  Example: “<MyType>” or “(Of MyType)”
ViewDataType	System.Type	This is a Type object representing the type to which a strongly-typed view is bound. It can be used to get information on the properties in the type and the like