- Saves Valuable Time
- Trusted Accuracy for 15 Years
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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
- Converts first 100 lines of each file or snippet
Subscribe to the Premium Edition
- $119 US per year (15-day money-back guarantee)
- High-quality conversion
- Unlimited conversion output
Other C# to VB.NET Converters
There are also other C# to VB.NET converters – use the one that's right for you.
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 in action!
Key Benefits
- Saves valuable time
- Accurate - 99.98% on Microsoft's "101 C# Code Samples"
- Converts entire C# projects, solutions, and folders from C# to VB.NET
- Safe - your code never leaves your machine
- Fast - tens of thousands of lines converted from C# to VB.NET per minute
- Includes a 15 day, no-risk, money-back guarantee
- Extremely responsive, personalized customer support
- Easy to use
- Produces helpful notes, warnings, and 'to do' comments
- Excellent learning tool for those new to VB.NET
FAQ
Q: Is the original C# project altered in any way?
Your existing code is left completely intact. The new VB.NET project is written 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 minor tweaks required in all but the simplest projects. 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?
For now it is, but conversion of code within ASP.NET files is not supported after April 2019.
Q: What are the most common adjustments necessary after conversion?
- 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.
- "unsafe" code blocks and types are not converted.
- Files with cshtml extensions (using 'Razor' syntax) are not converted.
- 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.
- Universal Windows Platform (UWP) apps (formerly 'UAP', 'Metro', 'WinRT', or 'Windows Store') are converted, but the converter cannot discover type information which is inside .winmd files. There are a couple of possible work-arounds, but they will not work consistently for all users. This means that there will be more manual adjustments required for Universal app conversions.
Additional Resources
VB.NET and C# equivalents chart
C# – Visual Basic bilingual dictionary
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