.net Upgrade Assistant Download
Roxann Monier
The Upgrade assistant automates the transition from an ASP.NET Standard project to an ASP.NET Core project. The tool employs the following steps. (You could plug in your own conversion steps.)
Analyzer functionality is included in the Upgrade assistant to analyze your solution and determine the components that need to be migrated to ASP.NET Core standard. After the analyzers evaluate your code, you can let the Upgrade assistant automatically convert your solution to ASP.NET Core.
Some tasks are not fully automated. For example, the Upgrade assistant does not handle Razor views or CSHTML, but the analyzer functionality does. The analyzer functionality flags non-ASP.NET Core standard with green squiggles directly in the Visual Studio project. You can fix these errors with code quick fix functionality in Visual Studio.
At step 5 in the migration process (adding templates), you need four startup files: Program.cs, Startup.cs, appsettings.json, and appsettings.Development.json. If they are missing, Upgrade assistant creates them. It pulls some template files, changes some namespaces (System.Web and Owin are no longer used, and are removed) and then adds them to the project. Your old Startup.cs is saved under the name Startup.old.cs.
The appsettings.json file stores configuration settings previously found in web.config. If you do not already have appsettings.json in your solution, the Upgrade assistant creates one for you (by adding a template file in step 5) and migrates your web.config settings to this file.
If you had a list of namespaces in web.config that were automatically imported into Razor views, (such as System.Web.Mvc.Html, System.Web.Routing, AlloyTemplates.Models.Pages, and AlloyTemplates.Models.Blocks), you cannot automatically import these namespaces in the views using ASP.NET Core. In ASP.NET Core, you must import them by the _ViewImports.cshtml file instead. Upgrade assistant creates _ViewImports.cshtml and moves the namespaces from web.config to this new file, along with TagHelpers because they can be useful in ASP.NET Core projects. Also, Upgrade assistant does not migrate namespaces starting with System.Web because they are not supported by ASP.NET Core; you should replace them with other namespaces.
The Upgrade assistant is divided into two repositories. The first one, [], contains the general Upgrade assistant that handles general code conversions from ASP.NET standard to ASP.NET Core. The second repository, [], contains code that is Optimizely specific.
It was during the amazing Visual Studio 2021 launch video, I saw mention of the dotnet upgrade assistant. Now - I feel like a fool because this tool has been around for a while, but it was getting an update to support .NET 6.
I had another test project that I had taken from .NET Framework 4.6 to .NET Core 6. This one was a concern, because things such as ASP.NET Identity had radically changed. You could not do the upgrade without breaking the code.
The .NET Upgrade Assistant was an amazing tool that helped us get our application into production with .NET 6 easily and quickly. I'm hoping if you're on the fence about making the upgrade, take the time to check out this tool!
Analyze, as the name suggests can be helpful to perform the analysis on an existing solution. It can help in finding which NuGet packages, project references and framework references need to be added / removed / upgraded.
The CSPROJ file format is different in modern .NET and hence the tool tries to upgrade the CSPROJ format. Older projects used to have NuGet package dependencies stored in packages.config. This tool helps in removing transitive dependencies.
So, after running upgrade tool, it would be needed to perform some kind of manual work to fix those things and verify the modifications. The analyzers help in highlighting remaining modifications and hence they would help in such manual work.
As said earlier, the package references are upgraded by .NET upgrade assistant. Many solutions may have their own private NuGet repository setup. For connecting to such repositories, additional authentication configurations would be required. Please refer the documentation.
This went far better than expected. The project structure was upgraded to the new SDK style, target framework was updated to .NET 7 and redundant references were removed. The only thing was that a NuGet package was erroneously removed with the claim that it did not support .NET 6/7 (which it did).
In this project, we use a shared class library (targeting netstandard2.0) which houses the Xamarin.Forms pages. This class library had to be upgraded to target both net7.0-ios and net7.0-android. In addition, the Xamarin.Forms pages had to be upgraded to .NET MAUI pages. What I will focus on here, though, is how I got the embedding of the MAUI pages to work with both the iOS and Android application.
My immediate term plan was to upgrade to the latest 200.x version of the API but to keep with WPF. I was wondering if there is anything I should be concerned about or aware of with this migration in advance. Would possibly going to 100.15 still support the UN and be easier?
Just to be clear: You don't have to move from .NET Framework to .NET 6 when going to v200. Personally I don't like the upgrade assistant very much. I had more luck just creating a new .NET 6 WPF project and copying that new .csproj over the old one (or moving old files over to the new project.
You should be fine moving to 200. I'd recommend you briefly upgrade to 100.15, and recompile. Look for any obsolete API warnings and address those. Any APIs that are reported obsolete have been removed in v200, but most obsolete warnings should tell you what to use instead (if you move directly to 200 you will just get build errors for those APIs, instead of helpful warnings). Other than that, you should be able to just change the target to v200.
Microsoft announced a new Visual Studio extension that will help developers upgrade their .NET applications to the latest .NET version. This should prove friendlier than the current command line tool.
During one of my more epic failures, I discovered upgrade-assistant which is a command line argument with the .NET 6 SDK. The tool saved so much time, helped me audit the site, communicate the issues more clearly to my development team, get a more accurate scope and estimate for the work ahead, keep the client happy - etc.
Dotnet Core has been released for a very long time now and everyone is getting on the cutting edge of the SDK technology when it is realeased. However, there has been some assistance missing in helping, especially .Net Framework projects, upgrade to the next version. Now 2021 they have brought the tooling out! and by they I mean Microsoft.
A handy part is it offers the ability to backup your existing project, so you will not lose your work, but you should also be using a source control like Git to manage you project anyway so you will see the changes made.
If you get into any trouble with the installation or the upgrade, like all of Microsoft projects, it is open source on GitHub. I found one or two issue installing and found the help I needed extremely fast.
The reason why these tools and methods are so important now, is the upgrading cadence is speeding up. Before you would have a set version with some patches, but you would not look to upgrade as often. Now with Dotnet Core and the general speed of development, the changes have a lot of benefits with little impact to upgrade, that is if you keep up with the latest. Already they have release .Net 5 production ready and releasing .Net 6 preview so you can see the speed in change.
The upgrades are getting as simple as updating a Nuget package, so why would you not. You will of course still need to test and validate the upgrade, plus you are restricted by other resources you use being compatible like external Nuget Packages.
So much has changed in the mobile development world in the past few years, and it continues to evolve at a breakneck speed. Microsoft's updates to .NET MAUI from Xamarin have been one of those things that I've kept pushing off while we can support apps. The time is coming, very rapidly, with Xamarin/Xamarin.Forms identifying iOS 16 as its final supported version we MUST upgrade. In this post, we will explore what was needed to migrate a project to .NET MAUI from Xamarin Forms as of June 2023.
Microsoft continues to invest in tooling and guidance for the upgrade; however, a bit of pre-work on your side will make things easier. The Upgrade Assistant suggests a minimum of Xamarin.Forms 4.8, but recommends an upgrade to 5.0. In my experience, get to 5.0 first!
I also strongly recommend that you clean up anything extraneous in your project before starting a migration. During cleanup, I specifically focus on removing unused code, fixing build warnings, removing TODO comments, or other similar elements. More than anything, the cleaner your build is, the cleaner the upgrade will be, and the faster you can take action within your build warnings.
Thankfully, with current releases, the Upgrade Assistant is a huge help; however, the usage of the upgrade assistant is more complex than one might think. With existing Xamarin projects, you will have a `MobileProject,` `MobileProject.Android`, and a `MobileProject.iOS` project. Although you can point the upgrade assistant tool at the solution, you must execute the tool once per project to complete the upgrade.
The upgrade assistant does as much as possible, and in some cases where items were removed, it may leave incorrect code. Attempting to build your project is a quick method to get an understanding of what you might need to do. Additionally, you can use the "Task List" in Visual Studio and look for TODO comments, such as this one TODO Xamarin.Forms.Device.SetFlags is no longer supported., which we encountered on a project for a feature that was not supported anymore.
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