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How to create a DLL file using VB.NET
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Short practical checklist for creating and using a VB.NET DLL (adds detail to 's pointer):

Start a Class Library project (Visual Basic) in Visual Studio, target the framework you need, add Public classes and Public methods, then Build. A minimal example:

Public Class MathHelpers
    Public Shared Function Add(a As Integer, b As Integer) As Integer
        Return a + b
    End Function
End Class

The compiled DLL appears under the project folder (bin\Debug or bin\Release). To consume it from another project add a Project Reference (preferred for side-by-side development) or use Add Reference -> Browse to the DLL. For ASP.NET specifically, you can place the DLL in the web application's bin folder so the runtime will load it. See how Visual Studio handles references here: .

Common pitfalls and tips:

  • Make classes and methods Public. Friend/internal visibility prevents external use.
  • Match target frameworks. A .NET Framework assembly may not be compatible with .NET Core/.NET without retargeting.
  • For shared system-wide libraries on .NET Framework consider strong-name signing and the GAC; for modern projects use NuGet packaging or a shared project reference.
  • If you get "Could not load file or assembly", check Copy Local, binding redirects (for ASP.NET), and that the referenced DLL version matches.
    For background on class libraries and packaging guidance, see the .NET class library overview: Class library overview.

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Member Avatar for bcm

Thanks alot it worked.
Thanks for your help!!!!!!!!
:)

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