原文来自VAllen cnblogs

一、使用教程
1、解压后，双击Reflector.exe，如果有选择默认版本的.Net Framework，根据需要选择即可。你选择的版本不同则出现的默认程序集也不同，我选择的是.Net4.0；

2、点击file-open选择要反编译的DLL，打开后程序集的命名空间会出现在列表中；

3、点击树形列表中的类，右边就会出现相应的反编译代码。反编译后的代码和原代码基本没有什么区别；

4、如果想把反编译后的代码导入到文件中，我们可以使用Reflector.FileDisassembler这个Reflector插件，下面介绍Reflector.FileDisassembler插件用法；
5、Reflector.FileDisassembler的下载地址：http://www.denisbauer.com/NETTools/FileDisassembler.aspx；
6、运行Reflector，点击View—add-ins…—Add,选择Reflector.FileDisassembler.dll (下载Reflector. FileDisassembler解压后的文件中有)添加成功后，Close关闭对话框。在tools菜单中会有file disassembler选项；
另外还有一些Reflector的相关插件下载：

Reflector.FileDisassembler
This add-in can be used to dump the disassembler output to files for any Reflector supported language.

将反编译后的代码导出到相关文件
Website Download

Reflector.CodeMetrics
Analyses .NET assemblies and shows design quality metrics. The menu item is registered under the "Tools" menu.

分析.net assemblies 和显示该组件的性能参数
Website Download

Reflector.SQL2005Browser
This add-in allows to browse .NET assemblies stored in SQL Server 2005 (Yukon) databases.

查看SQL Server 2005 (Yukon) database中的存储集合
Website Download

Reflector.DelphiLanguage
The Delphi view that is used inside .NET Reflector provided as a language add-in.
Website Download

Reflector.McppLanguage
This add-in extends Reflector with a Managed C++ language rendering module.
Website Download

Reflector.ChromeLanguage
This add-in extends Reflector with a Chrome language rendering module.
Website Download

Reflector.Diff
This add-in shows differences between two versions of the same assembly.
Website Download

Reflector.VisualStudio
This program is hosting .NET Reflector inside the Visual Studio 2003 IDE. Run Reflector.VisualStudio.exe to register the add-in with Visual Studio.

将Reflector工具嵌入到vs.net里，不过不需要，在一些比较新的版本，已经集成此功能了，就看你安装的时候是否选择此功能，默认是选中安装的。
Website Download

Reflector.ClassView
Shows class definitions as plain text with color coding. The menu item is registered under the "Tools" menu.

着色后的Class源代码视图查看
Website Download

Reflector.CodeModelView
This add-in shows the underlying code model objects for a selected node in .NET Reflector. The menu item is registered under the "Tools" menu.
Website Download

Reflector.FileGenerator
This add-in can be used to dump the disassembler output to files for any Reflector supported language.

将反编译后的代码导出到相关文件
Download

Reflector.Graph
This add-in draws assembly dependency graphs and IL graphs.

绘制集合的结构图
Website Download

Reflector.OpenRunningAssembly
Opens an assembly or dependency from a process running on the system. The menu item is registered under the "Tools" menu.
Website Download

原文请看：http://hi.baidu.com/stone_cao/item/1ee493c40371c67489ad9e80

34个Reflector插件合集请看本文底部。附截图：