.NET Core (Part 3)

Neil Haddley • September 20, 2025

Creating a VB.NET Web App using Microsoft's cross-platform framework.

.NETdotnetrest-apiweb-apidotnet-core

I am able to develop ASP.NET Core applications with the VB.NET language. However, creating a VB.NET ASP.NET Core application is not supported by the dotnet command line app.

BASH

1$ dotnet new web -lang VB -o haddley-web   # fails
2$ dotnet new web -lang C# -o haddley-web   # works

I ran dotnet new web -lang VB -o haddley-web (which fails)

I ran dotnet new web -lang C# -o haddley-web (which works)

VB.NET console app

As a workaround I generated a VB.NET console application project and converted it to a VB.NET Web App project.

BASH

1$ dotnet new console -lang VB -o haddley-console
2$ cd haddley-console
3$ dotnet new gitignore
4$ dotnet run

I ran dotnet new console -lang VB -o haddley-console

I ran dotnet run for the generated console application

I updated the .vbproj file

I updated the Program.vb code from "Console.WriteLine(...)"

...to "WebApplication.CreateBuilder(...)..."

I ran dotnet run for the Web App

References

How to create an ASP.NET Core Minimal API with Visual Basic .NET

Part of the .NET Core series

← Previous in series

.NET Core (Part 2)

Creating a Blazor App that calls Microsoft Graph.

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