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OmniSharpSublime for ST3

OmnisharpSublime is a plugin for ST3 to provide a C# development environment. It communicates with omnisharp-roslyn by nosami for IDE functions.

It works on:

  1. Mac OSX
  2. Linux
  3. Windows


  1. Auto OmniSharpServer running
  2. Asynchronous communication with OmniSharpServer (Never freeze!)
  3. Auto Completion
  4. Goto definition
  5. Rename
  6. Goto implementation
  7. Syntax/Semantic error highlighting
  8. Displays possible override methods
  9. Find Usages
  10. Format Document
  11. Displays code issues such as assigment is redundant
  12. Fix code issues - put cursor on highlighted issue and select Fix Code Issue
  13. Remove Unused, Add Missing and Sort Using Statements
  14. Code Actions eg. Convert LINQ query to Fluent Syntax
  15. Add File To Project
  16. Remove File from Project (via sidebar and context menu)
  17. Add New C# Class & Interface (via sidebar and context menu) via File Templates which also adds to csproj
  18. Type Lookup with Documentation
  19. Hide/Show Info Panel
  20. Reload Solution

Linux Requirements

  • mono
  • msbuild-stable

Windows Requirements

  • Microsoft Build Tools 2015 (must be added to PATH)

Build Requirements

  • dotnet core sdk


Building From Source

  1. Move to ST3 plugin directory in console.

     cd {path to ST3 plugin directory}/Packages
  2. Clone repository.

     git clone OmniSharp
  3. Move to plugin directory, update submodule and build.

    • Windows
    cd OmniSharp
    git submodule update --init --recursive
    • Linux Or Mac OSX
    cd OmniSharp
    git submodule update --init --recursive

Project Setting

The server will automatically find the the solution file from the folder you have opened in Sublime. If you have multiple solutions you have to specify the solution file you wish to use in a sublime-project.

  1. Go to File -> Open and select the folder with your solution in it.

  2. Go to Project -> Save Project As and save a YOURPROJECTNAME.sublime-project in the same location as your *.sln

  3. Open your YOURPROJECTNAME.sublime-project file that should now appear in the sidebar on the left

  4. Enter the location to the *.sln file like below

Example of a sublime-project

            "follow_symlinks": true,
            "path": "."
    "solution_file": "./testconsoleprj.sln"

Once the YOURPROJECT.sublime-project is set up and saved, follow the below:

  1. Close Sublime (YMMV but this seems to be the best way to open the YOURPROJECTNAME.sublime-project)
  2. Open Sublime
  3. Click Project -> Open Project, and select your YOURPROJECT.sublime-project file

C# language-specific settings

Create C# settings file as shown in this picture


Paste the below in. This will launch intellisense on . and < symbols

   "auto_complete": true,
   "auto_complete_selector": "source - comment",
   "auto_complete_triggers": [ {"selector": "source.cs", "characters": ".<"} ],