Visual Basic (VB.NET) Online Compiler
Visual Basic has been around since 1991. The .NET version (VB.NET) has been around since 2002. That's over two decades of enterprise applications, internal tools, Excel macros-turned-applications, and Windows forms. A lot of that code is still running.
Microsoft has said they'll keep supporting VB.NET but won't add new language features. So it's in maintenance mode as a language. But "maintenance mode" for something this widely deployed still means millions of developers touching VB.NET code.
Why you might need a VB.NET online compiler
Installing Visual Studio just to test a quick VB.NET snippet is overkill. Even the .NET SDK alone takes time to set up if you don't already have it. And if you're primarily a developer in another language -- maybe you're a Java or Python person who inherited some VB.NET code -- you really don't want to configure a full .NET development environment for a five-minute task.
A VB.NET online compiler gives you a Module and a Sub Main ready to go. Write your code, run it, see the output.
Code example
Here's a simple VB.NET program that demonstrates the basics -- modules, subroutines, loops, and string handling:
Module Program
Sub Main()
' VB.NET basics: variables, loops, string operations
Dim languages() As String = {"VB.NET", "C#", "F#", "Python"}
Console.WriteLine("Languages I've used:")
For Each lang As String In languages
Console.WriteLine(" - " & lang)
Next
' Functions work how you'd expect
Dim result As Integer = Add(15, 27)
Console.WriteLine("15 + 27 = " & result.ToString())
' Select Case (VB's version of switch)
Dim day As String = "Monday"
Select Case day
Case "Monday"
Console.WriteLine("Start of the week")
Case "Friday"
Console.WriteLine("Almost weekend")
Case Else
Console.WriteLine("Midweek")
End Select
End Sub
Function Add(a As Integer, b As Integer) As Integer
Return a + b
End Function
End Module
Copy that into OneCompiler's VB.NET editor and hit run. You'll get output in seconds.
The BASIC heritage
VB.NET's roots go back to BASIC from the 1960s. The syntax reflects that -- it reads more like English than most languages. If...Then...End If instead of curly braces. Dim for variable declarations. For Each...Next for loops. Some developers find this verbose. Others find it readable. Either way, it's distinct.
This readability made Visual Basic the language of choice for a generation of Windows developers who weren't computer science graduates. Business analysts, accountants, and domain experts built real applications in VB. Many of those applications are still in production, which is why VB.NET skills still matter in enterprise environments.
Who uses a VB.NET online compiler?
- Enterprise developers maintaining legacy .NET applications that were written in VB rather than C#
- Students in courses that still teach VB.NET (particularly in some European and Asian universities)
- Anyone converting VB.NET to C# -- run the VB version online, verify behavior, then write the C# equivalent
- Developers on non-Windows machines who need to test VB.NET but don't have Visual Studio available
What OneCompiler offers
The key thing is that it works without a .NET SDK install. Beyond that:
- Shareable code links -- useful when you're asking for help with a VB.NET snippet on a forum or with a colleague
- Clean starting template -- you get a working
Module/Sub Mainstructure out of the box - Cheatsheets and docs accessible from the editor, which helps when you can't remember if it's
Dim x As IntegerorInteger x(it's the first one)
VB.NET isn't the trendy choice. But it's a practical one for the work that needs doing. If you need to run VB.NET code without the overhead of a full IDE, this is the fastest way.