Instant VB – Our C# to VB.NET Converter

Instant VB produces great VB.NET code, saving you hours of painstaking work and valuable time.

Try the Free Edition

Free
High-quality conversion
Limited conversion output

Subscribe to the Premium Edition

$119 US per year (15-day guarantee)
High-quality conversion
Unlimited conversion output

Runs on Windows with version 4.5 or higher of the .NET Framework.

The Free Edition limits output to 100 lines per file (no limit on the number of files).

License Information Support Uninstall Instructions

"After investigating various web and client translators, Instant VB from Tangible Software Solutions won hands-down. If you're converting from C# to VB.NET, Instant VB IS the tool for your project."

– Mark Worden, Software Engineer, Accenture
www.accenture.com

"Instant VB is THE best C# to VB converter tool that we've found. We're using it to convert our samples and reference applications to provide code in both C# and VB, and it saves us a ton of time."

– J. Ambrose Little, Infragistics, Inc.
www.infragistics.com

"For anyone who needs to convert code on a regular basis (or even one large one-off job) Instant VB and Instant C# are without doubt the best translation tools on the market."

– Dom Sinclair, View To Learn

Key Benefits

Saves valuable time
Accurate and comprehensive
Easy to use
Safe - your code never leaves your machine
Responsive customer support
15 day money-back guarantee
Flexible - converts snippets, files, projects, solutions, and folders from C# to VB.NET
Fast - tens of thousands of lines converted from C# to VB.NET per minute
Helpful conversion comments
Excellent educational tool for C# developers learning VB.NET
Numerous conversion and formatting options

10 Second Overview

Converting Projects:
C# to VB.NET Indexer Conversion:
C# to VB.NET Lambda Conversion:
C# to VB.NET Object Initializer Conversion:
C# to VB.NET LINQ Conversion:
Numerous Options:
Code Formatting Options:

*Scroll right to see Instant VB screenshots

FAQ

Q: Are the original C# files altered in any way?

Your existing code is left completely intact. The new VB.NET project is output to the new location that you specify.

Q: Can the converter produce VB6 code?

No - only VB.NET code is produced.

Q: Do you guarantee a 100% complete conversion?

No - our accuracy is very high, but there will be some adjustments required for all but the simplest conversions. Read the rest of the FAQ to get an idea of a few things that are not converted.

Q: Is C# code within ASP.NET files converted?

No - C# code within ASP.NET markup is not converted.

Q: What are the most common adjustments necessary after conversion?

'unsafe' code blocks and types are not converted.
VB does not allow assignments within expressions, but C# does (e.g., while ((x = y()) > 0) assigns a value to x as part of an expression). Instant VB will convert some cases, but will mark other more complex cases with a "ToDo" comment. You must manually adjust these.
Most reference type comparisons are converted, but occasionally you may need to manually change an equals sign to "Is". The VB compiler makes these adjustment requirements obvious.
Unfortunately, many new C# features beginning with C# 7 have no equivalent in VB. This includes 'throw expressions', 'ref returns', 'ref locals', local functions, 'pattern variables', and 'switch' enhancements such as pattern expressions. Instant VB detects these, comments out some code, and provides 'todo' notes.
VB does not allow overloading when it is based only on the direction of the parameters (ByVal vs ByRef). Methods overloading done this way will require renaming of the method name in VB.

Additional Resources

VB.NET and C# equivalents chart

C# – Visual Basic bilingual dictionary

C# to VB.NET conversion tips

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