You can use .NET Reflector to open an assembly by doing one of the following:

• Open .NET Reflector, and then drag the assembly from Windows Explorer onto .NET Reflector. You can also open .NET Reflector directly from Windows Explorer.
  See Setting Integration Options for details.
• Open .NET Reflector, and on the File menu, click Open; or on the toolbar, click

• Invoke .NET Reflector from the command line:
  Reflector.exe [options] [assemblies]
  You can use the following options:

  /register	Register Visual Studio and Windows Explorer integration
  /unregister	Unregister Visual Studio and Windows Explorer integration
  /select:<identifier>	Select item in browser
  /fontname:<name>	Use specified font name
  /fontsize:<size>	Use specified font size
  /configuration:<file>	Use configuration file name
  /help	Show this help message

  For example: C:\>Reflector.exe /select:"System.Uri" System.dll

• Right-click on the assembly in Visual Studio and select Open in .NET Reflector.