Omnisharp问题时试图在Ubuntu20.04上运行VSCode中的Hello项目

Question

我试图让.Net和VSCode在Ubuntu20.04上工作。"dotnet“命令确实运行了程序ok，但是在VSCode中运行它会导致以下错误：

Starting OmniSharp server at 7/7/2020, 6:28:24 PM
    Target: /home/ivlatin2012/Projects/HelloDotnetCore

OmniSharp server started with Mono 6.8.0.
    Path: /home/ivlatin2012/.vscode/extensions/ms-dotnettools.csharp-1.22.1/.omnisharp/1.35.3/omnisharp/OmniSharp.exe
    PID: 14939

System.TypeLoadException: Could not load type of field 'McMaster.Extensions.CommandLineUtils.CommandLineApplication:_validationErrorHandler' (36) due to: Could not load file or assembly 'System.ComponentModel.DataAnnotations, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies.
  at OmniSharp.Stdio.StdioCommandLineApplication..ctor () [0x00000] in <11f4106bfdfd41759d0a0dc35f30dcd7>:0 
  at OmniSharp.Stdio.Driver.Program+<>c__DisplayClass0_0.<Main>b__0 () [0x00006] in <be19315b4efc4538b70abd1dc15c63a1>:0 
  at OmniSharp.HostHelpers.Start (System.Func`1[TResult] action) [0x0001c] in <a3beccf5923c417282767eebc9bf25e1>:0 

我正在运行的Program.cs文件实际上没有太多内容

using System;

namespace HelloDotnetCore
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Hello World!");
        }
    }
}

launch.json文件如下所示：

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": ".NET Core Attach",
            "type": "coreclr",
            "request": "attach",
            "processId": "${command:pickProcess}"
        },

        {
            "name": ".NET Core Launch (console)",
            "type": "coreclr",
            "request": "launch",
            "preLaunchTask": "build",
            "program": "${workspaceFolder}/bin/Debug/<target-framework>/<project-name.dll>",
            "args": [],
            "cwd": "${workspaceFolder}",
            "stopAtEntry": false,
            "console": "internalConsole"
        }
    
    ],

    ]
}

.csproj文件如下所示

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp3.1</TargetFramework>
    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
    <GenerateBindingRedirectsOutputType>true</GenerateBindingRedirectsOutputType>
  </PropertyGroup>

</Project>

任何帮助都会很感激的。在过去的几年里，我一直远离任何.Net，并且对.Net核心完全陌生。这是我想要学习的Pluralsight类的一部分，但是已经被VSCode & Omnisharp所困住了。

Answer 1

我唯一能找到的就是

Github与Mono的问题

您可以尝试添加设置："omnisharp.useGlobalMono": never，并查看该设置是否适合您。

Answer 2

对我来说，以下步骤起了作用：

• 转到C#扩展设置
• 将Omnisharp:设置为“从不”

图片示例