ASP.NET Web Forms → .NET 10
Fixed price. Phased, so your team never faces a risky cutover weekend. AI-assisted conversion, with every page reviewed and tested by an experienced .NET developer.
Sound familiar?
Web Forms apps built 10 or 20 years ago still handle orders, billing, scheduling and reporting at thousands of companies. They work, until they don't.
Knowledge of how it works lives in one head, or none. Every change is a guess.
Few developers want Web Forms or VB.NET work, and the ones who do are expensive.
It can't use modern .NET, current libraries or modern hosting, and the gap grows every year.
Big-bang rewrites run over budget and break things nobody knew the old system did.
Services
Start small with an assessment. You'll know the cost, the plan and the risks before you commit to anything bigger.
Start here
From $750 credited toward your migration
Then
Quoted from your assessment
Ongoing
From $1,500/month
How it works
Your new app is put in front of the old one. Pages move over a group at a time, and anything not yet migrated is quietly passed through to the old app. Users keep one address and never notice the switch.
Under NDA, with read-only access, we inventory the whole application and deliver a phased plan and a fixed price.
New .NET 10 solution, your layout and navigation, data access and authentication, running side by side with the old app.
Read-only pages first, then pages that change data. Each group is tested against the original before it goes live.
When the last page moves, the old app is retired. Optional ongoing support keeps the new one healthy.
See exactly what you'd get
We ran our assessment on Microsoft's own open-source Web Forms sample application, eShopLegacyWebForms. The report is 9 pages: a plain-English summary for decision makers, a phased plan, the risks specific to the app, what we'd need from you, and the full estimate with every number explained.
Download the sample report (PDF)Why it costs less
Our conversion tooling does the first pass on each page: it reads the markup, code-behind and the shared code it depends on, and produces modern Blazor code plus a written review. Then a .NET developer checks it, tests it against the original and fixes what the tool missed.
Formats, messages, defaults and quirks are preserved on purpose. Your users shouldn't have to relearn anything.
Your SQL Server schema and stored procedures stay as they are, so reports and integrations keep working.
When we find a real bug or security issue in the old code, we tell you and fix it only with your agreement.
All code lives in your repository, in standard .NET. No proprietary runtime, no lock-in.
FAQ
We sign an NDA before seeing any code, and we only need read-only access. Code is processed with a commercial AI service under terms that do not allow training on your data. If your policies require it, we can run the tooling under your own accounts.
No. The old and new apps run side by side and pages move over in phases. Your team keeps working the whole time.
No. We keep your SQL Server schema, stored procedures and data as they are. Any database improvements are a separate decision for later.
Not at all. VB.NET Web Forms is a core part of what we do. The new app is written in C#, and the assessment shows exactly how each VB page maps over.
The assessment finds every third-party control and prices its replacement, so there are no surprises later.
Blazor is Microsoft's component-based web framework for modern .NET. Its model is the closest to Web Forms, so pages map over cleanly, and .NET 10 is a long-term support release.
A small app with a handful of pages can be done in a few weeks; large apps take months. Your assessment includes a phased timeline.
That's our risk. The price is fixed for the agreed scope. If you want to add or change scope, we agree the change in writing before doing it.
Get started
A few lines is enough: what the app does, roughly how big it is, and what's worrying you about it. We'll reply within one business day to set up a short call.
Prefer email? hello@showmentech.com