.NET Fiddle Ideas

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  1. Allow breakpoints

    Allow setting breakpoints for debugging.

    131 votes
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    • 111 votes
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        1 comment  ·  Admin →
      • Support unit testing frameworks

        It'd be great to be able to use this for unit tests. Specifically, I think support for NUnit and XUnit would be very useful.

        109 votes
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          We could create another Project type (NUnit for ex). If it is selected, Code would be divided into 2 sections: Code and Tests. Code would have the classes you need to test and Tests would have NUnit TestFixture class. Then when u run it – Output would show lists of tests and red/green next to them. Would that work? Please comment.

        • Add commonly used "using" clauses by default

          I almost always want System, Linq, Collections, Generics and a few others in "using" clauses. I think they should be added to the blank default program, or maybe add a button to add them so I don't have to enter them manually.

          60 votes
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          • Allow downloading source code

            Sometimes it'd be helpful to easily download the source code of a dotnetfiddle paste, either a single file or the whole paste (e.g. all files from a MVC "project")

            56 votes
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              1 comment  ·  Admin →
            • C# 6.0 Support

              Full roslyn release support

              55 votes
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              • Add "ASP.NET Web Form" to list of project types

                Divide code section into ASPX and Code Behind.

                Create Web App project on the fly and build it. With Default.aspx page having the code.

                Display Default.aspx page in Output section or Popup

                48 votes
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                • Share the code of dotnetfiddle open source on GitHub

                  Share the code of dotnetfiddle open source on GitHub

                  47 votes
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                  • Add command line args

                    Please add the ability so we can pass custom args to the Program's Main method just like you can on http://www.ideone.com

                    35 votes
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                    • Allow uploading DLLs

                      Simply add an option to upload .NET libraries, like for testing them.

                      35 votes
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                        1 comment  ·  Admin →
                      • Allow multiple files for Console projects

                        In many cases I'd love to be able to have multiple files in a single fiddle so I don't have to throw all my classes in a single file and thus making it harder to read/understand.

                        Being able to have many files would greatly benefit explaining complex problems/scenarios.

                        31 votes
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                        • Support System.Web.Script.Serialization

                          So that we can use JavaScriptSerializer and others

                          23 votes
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                          • "Auto Run" should be "no" by default

                            Keeping the "Auto Run" to "yes" is not working for me, just hangs the page.

                            22 votes
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                            • Add support for WebAPI using System.Web.Http

                              Add support for WebAPI using System.Web.Http

                              21 votes
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                              • Please allow to change platform target to either x86 or x64

                                Any CPU won't allow you to load native dependencies e.g. SQLite. If this doesn't open security holes, please give users the option to specify platform target to be x86, x64 or Any CPU.

                                18 votes
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                                • Nemerle

                                  Add Nemerle language: http://nemerle.org

                                  17 votes
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                                  • Font settings

                                    I want to change font size for code editor, it is cosmetic, but very nice feature =)

                                    14 votes
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                                    • F5 should run code, blocking default browser behavior

                                      This is a very essential feature as people are used to hit F5 to run code, and instead all their work is gone.
                                      Please also show a confirmation message if user clicks the browser refresh button.

                                      14 votes
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                                      • 12 votes
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                                        • Unsafe support

                                          Nothing is mentioned about unsafe code support. It would be great to have it!

                                          12 votes
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