File Extensions (VB.Net and ASP Classic Cross Reference Guide)

Common source code file extensions include:

• .SLN - Solution File. Contains solution specific information such as links to the projects within this solution.
• .VBPROJ - VB.Net Project File. Contains project specific information in XML. When adding a file, it is added to the project file.
• .VB -VB.Net source file.
• .Designer.VB -VB.Net form file (a text resource file).

//Sample code snippet from the .vbproj project file:

<ItemGroup>
  <Compile Include="Cyborg.vb" />
  <Compile Include="Form1.vb">
    <SubType>Form</SubType>
  </Compile>

  //...

.asp is the default extension for Active Server Pages (ASP) although some developers will change the default extension in an effort to add an additional security level. Although there is no clear standard for include files, using .INC is common but you must make sure that .INC files are not executed nor displayed.