Download Dotnet 3.1 Sdk

[Helen Drewski]

For example, dotnet build builds a project. Each command defines its own options and arguments. All commands support the --help option for printing out brief documentation about how to use the command.

You specify the path to an application .dll file to run the application. To run the application means to find and execute the entry point, which in the case of console apps is the Main method. For example, dotnet myapp.dll runs the myapp application. See .NET application deployment to learn about deployment options.

The following options are available when dotnet is used by itself, without specifying a command or an application to run. For example, dotnet --info or dotnet --version. They print out information about the environment.

Sets the verbosity level of the command. Allowed values are q[uiet], m[inimal], n[ormal], d[etailed], and diag[nostic]. Not supported in every command. See specific command page to determine if this option is available.

Path to an additional .deps.json file. A deps.json file contains a list of dependencies, compilation dependencies, and version information used to address assembly conflicts. For more information, see Runtime Configuration Files on GitHub.

Roll forward behavior can also be configured in a project file property, a runtime configuration file property, and an environment variable. For more information, see Major-version runtime roll forward.

This option overrides the version of the first framework reference in the application's .runtimeconfig.json file. This means it only works as expected if there's just one framework reference. If the application has more than one framework reference, using this option may cause errors.

Tools are console applications that are installed from NuGet packages and are invoked from the command prompt. You can write tools yourself or install tools written by third parties. Tools are also known as global tools, tool-path tools, and local tools. For more information, see .NET tools overview.

This turned out to be an issue with the state of the templates specific to my machine. After doing a dotnet new --debug:reinit to revert the templates to their freshly installed state, the issue went away.

While all of the below details are still currently accurate, they have now added a system for determining exactly what uninstall string is required. Run the uninstall command without any parameters to see a list of installed templates listed by the exact string required to uninstall them.

I'm having some troubles setting up live reload for my website. I have tried setting up a new v9 instance with dotnet new umbraco and surely I miss some configuration.I've tried setting up a new website with dotnet new mvc which should be almost the same, and all works as expected.

Both projects when launched via dotnet watch run give the same message in console: dotnet-watch reload socket connected.and when a file changes it correctly prompts File changes detected. Waiting for application to rebuild. but in v9's project nothing happens.

Sounds like the feature that you want is in .NET 6.0+ which is called Hot Reload. You can try it now by using .NET 6 in your v9 project (v10 will be .NET 6 by default). Just note that we don't officially support .NET 6 on v9 yet as we're not entirely sure that everything works. So far, we've had no bug reports about .NET 6-specific problems though.

To be honest, personally, I am not super impressed. I mean, Warren is absolutely impressive, always, but I mean with Hot Reload. From my short time playing with it I just get frustrated when it doesn't work and I just have to do a manual restart of the webserver. I might as well use my old-fashioned development method by CTRL+SHIFT+F5'ing after code changes.

Do note that dotnet watch run is absolutely fine when it works, same as with Hot Reload, it has similar limitations and you will need to restart the webserver sometimes. The only thing that it doesn't do on .NET 5 is refresh your browser, after you see File changes detected. Waiting for application to rebuild. you should be able to refresh the page by hand and see the changes.

As you can see, a lot of things don't work, you can't change a method signature, you can't add async, you can't add a using statement or modify interfaces.. all of those require a full build. So.. yeah, it's fine for simple things I guess but I am not likely to use Hot Reload for much in the future unless they can significantly improve what's supported.

Refreshing the page manually works like a charm for me in v9 project, the thing that frustrates me the most is that doing the same thing on a console project (no Umbraco, just dotnet new mvc) in some way it triggers me a browser refresh with every change, even if I modify something that needs a recompile (obviously after it had recompiled it).

Okay I dug a little bit more on this, and it seems that for some reason if you remove all the logging providers in Program.cs with Host.CreateDefaultBuilder(args).ConfigureLogging(x => x.ClearProviders()) it also breaks most of the dotnet watch run functionalities.

If you don't know the dotnet format tool, it's available as a separate install in previous versions of .NET, but ships as part of the .NET 6 SDK. It's used to format your codebase using rules specified in an .editorconfig file, and can ensure things like spacing, indentation, and whether certain characters appear on their own line are applied consistently throughout your codebase.

I recently recorded a short video demonstrating how to use the new dotnet format tool on a real project, including how to apply one of my favorite C# 10 features, file scoped namespaces, throughout a codebase. You can watch it here and/or read on. I do share a few extra tips in the video toward the end:

If you're a .NET developer and you're not yet familiar with file-scoped namespaces, I'm sure you'll probably encounter them in the very near future. The lead designer of the C# language team at Microsoft, Mads Torgersen, recently commented on .NET Rocks that over 99% of all C# files on GitHub have just one namespace. Which means that the vast majority of the lines of code in that file was indented, typically by 2 or 4 characters, for the entire file (minus some using statements).

Sure, it wouldn't work for a handful of files that do use multiple namespaces in the file. Those files would continue to use the current syntax that we've had since C# 1.0. But every other file could just use a one-line namespace statement and outdent the entire contents of the file (minus using statements above the namespace of course) by one indent level. Think of how many whitespace characters could be saved!

Also, it's worth noting that indentation and whitespace are useful signals in your codebase. But they're only useful if there's variation. If the entire code section of the file is all indented the same amount because of a namespace, it's only adding noise, not signal.

Outdenting (it's a word!) the bulk of your code also makes life easier when you copy code listings into documentation, book manuscripts, slide decks, etc. It seems like a stupid little thing but I'm very jazzed about it.

Fortunately this is where dotnet format comes in. You can modify your .editorconfig file to specify that you want to use this new file scoped namespaces feature. You can further specify that it's important enough that you don't just want it as a suggestion but you want to fix it anywhere it's not this way. To do that you add a line like this one:

With this in place in your .editorconfig, you can now use dotnet format style to update your whole project or solution, provided that it's using net6.0 or higher. You can also use a "Refactor whole solution" option in some IDEs like Visual Studio 2022 (does Rider support this? Let me know and I will update).

The dotnet format tool is a great way to quickly apply formatting from your .editorconfig to your entire project or solution. It handles style rules as well as whitespace, and can even apply rules based on brand new C# 10 features like file scoped namespaces. Once you start using file scoped namespaces I doubt you'll ever want to go back to needlessly indented code files again (in fact, since more files have only one class in them, I think support for file scoped classes could be a worthwhile option as well).

Be sure to watch the short video on Using dotnet format on YouTube to see a few more gotchas and another tip on how to use dotnet format as part of your automated build process. Hit subscribe if you find the videos useful - I'm hoping to record them more regularly if people seem to like them. You'll find more videos on NimblePros' YouTube channel, too.

AWS recently announced support for DotNet 8 framework for their lambda. I am trying to deploy my .Net 8 based lambda function to AWS and the serverless framework reports an error that the runtime dotnet8 is not supported. I tried with 3.38.0 version of serverless framework.
Does Serverless framework has support of DotNet8?

Is anyone from the serverless team able to provide any sort of information on the above? I also get Unable to add Lambda Layers to function xyzHandler with runtime dotnet8. Support from the AWS team came over a month ago. It would be nice to have some timelines so that we are not forced to build on soon to be legacy frameworks.

Recently I was involved in troubleshooting a bot case where a system.net call from the bot was failing. We wanted to grab dotnet-traces as that gives us best information from system.net perspective. One way would be to run the bot project locally and then run dotnet-trace for the dotnet process there. But if the issue only happens in the Azure deployed bot, things become a little complicated.

Just copy paste those and you'll be updated. Yes, it's changed it's moniker but the tool is the same and you still invoke it with "dotnet outdated." You can learn more about the wonderful dotnet outdated tool on their GitHub! Take a moment, Dear Reader, and give them a GitHub Star!

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