Visual Studio代码：找不到preLaunchTask'build'？

Question

我使用以下命令创建了一个新的.NET Core应用程序：

dotnet new console -o test

当我尝试在Visual Studio代码调试器中运行它时，我得到：

Could not find the preLaunchTask 'build'?

Visual Studio Code为我生成了这些文件：

tasks.json:
{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "0.1.0",
    "command": "dotnet",
    "isShellCommand": true,
    "args": [],
    "tasks": [
        {
            "taskName": "build",
            "args": [ ],
            "isBuildCommand": true,
            "showOutput": "silent",
            "problemMatcher": "$msCompile"
        }
    ]
}

和

launch.json
{
    "version": "0.2.0",
    "configurations": [
        {
            "name": ".NET Core Launch (console)",
            "type": "coreclr",
            "request": "launch",
            "preLaunchTask": "build",
            "program": "${workspaceRoot}/bin/Debug/<target-framework>/<project-name.dll>",
            "args": [],
            "cwd": "${workspaceRoot}",
            "stopAtEntry": false,
            "console": "internalConsole"
        },
        {
            "name": ".NET Core Launch (web)",
            "type": "coreclr",
            "request": "launch",
            "preLaunchTask": "build",
            "program": "${workspaceRoot}/bin/Debug/<target-framework>/<project-name.dll>",
            "args": [],
            "cwd": "${workspaceRoot}",
            "stopAtEntry": false,
            "launchBrowser": {
                "enabled": true,
                "args": "${auto-detect-url}",
                "windows": {
                    "command": "cmd.exe",
                    "args": "/C start ${auto-detect-url}"
                },
                "osx": {
                    "command": "open"
                },
                "linux": {
                    "command": "xdg-open"
                }
            },
            "env": {
                "ASPNETCORE_ENVIRONMENT": "Development"
            },
            "sourceFileMap": {
                "/Views": "${workspaceRoot}/Views"
            }
        },
        {
            "name": ".NET Core Attach",
            "type": "coreclr",
            "request": "attach",
            "processId": "${command:pickProcess}"
        }
    ]
}

我的问题看起来类似于this one，但在我的情况下，launchLaunchTask中的名称与launchLaunch和task.json之间没有不匹配，因此在这种情况下答案不适用。我正在运行Visual Studio代码版本1.11.2和.NET Core 1.1（截至创建此帖子时的最新版本）。

我在Windows机器和Mac上都尝试过同样的问题。如果我执行命令“dotnet restore”和“dotnet run”，代码运行没有问题，但我仍然得到相同的错误：“找不到preLaunchTask'构建'”

Answer 1

对我来说，它可以在tasks.json和/或launch.json文件创建后重启VS Code。

另请注意，您需要使用dll的路径更新"program"中的launch.json设置。

Answer 2

如下所示更改tasks.json。

tasks.json
{
    // See https://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "2.0.0",
    "command": "",
    "args": [],
    "tasks": [
        {
            "label": "build",
            "command": "dotnet",
            "type": "shell",
            "args": [
                "build"
            ],
            "options": {
                "cwd": "${workspaceRoot}"
            },
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "presentation": {
                "echo": true,
                "reveal": "always",
                "focus": false,
                "panel": "shared"
            },
            "problemMatcher": "$msCompile"
        }
    ]
}

Answer 3

这已在master中得到解决，并将在下一个版本中提供。在文件夹上重新打开VS代码应该有助于解决问题。

Answer 4

请注意 -

如果workspaceFolder与例如tasks.json不同将不会创建应用程序文件夹qazxswpoi，您将获得上述所有错误。我在打开项目后创建了一个子文件夹并得到了上述所有错误 - 从正确的文件夹运行调试后都修复了 - 这可以解释重新启动VS代码的效果。