Generate LINQ to SharePoint Entity Classes by Using SPMetal

Open a Command Prompt window.

Change the current path to the SPMetal.exe file location (it is usually [DRIVE:]\Program Files\Common Files\Microsoft Shared\web server extensions\14\BIN).

Type the following command:

SPMetal /web:http://MyServer/SiteName /code:SiteName.cs

where:

    http://MyServer/SiteName is the fully-qualified URL of your site.
    SiteName.cs is the output file for the generated code. 


LINQ to SharePoint spmetal.exe does not support external lists