C# VSIX 定期将状态消息写入输出 window

C# VSIX Write status messages to the output window periodically

我开始使用 Visual Studio 扩展,并希望在我任务的某些里程碑期间将状态消息写入输出 window 以报告其进度。

我正在使用命令从上下文菜单中触发任务。这是它的 Execute 方法的模拟示例:

private void Execute(object sender, EventArgs e)
{
    ThreadHelper.ThrowIfNotOnUIThread();

    var paneGuid = Guid.NewGuid();

    var outputWindow = (IVsOutputWindow)Package.GetGlobalService(typeof(SVsOutputWindow));
    outputWindow.CreatePane(ref paneGuid, "My Window", 1, 1);
    outputWindow.GetPane(ref paneGuid, out var outputPane);

    outputPane.Activate();

    outputPane.OutputString("Starting...\n");

    Thread.Sleep(2000);

    outputPane.OutputString("1...\n");

    Thread.Sleep(2000);

    outputPane.OutputString("2...\n");

    Thread.Sleep(2000);

    outputPane.OutputString("3...\n");

    Thread.Sleep(2000);

    outputPane.OutputString("Finished");
}

输出 window 在 Execute 方法完成后显示,而不是按写入显示输出。

如何让它立即显示并定期写消息?

更新:解决方案

正如 JHBonarius 在下面所建议的那样,解决方案是将逻辑移动到异步任务中并调用 UI 线程根据需要写入输出 window:

private void Execute(object sender, EventArgs e)
{
    ThreadHelper.JoinableTaskFactory.RunAsync(async () =>
    {
        var paneGuid = Guid.NewGuid();

        await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
        var outputWindow = (IVsOutputWindow)Package.GetGlobalService(typeof(SVsOutputWindow));
        outputWindow.CreatePane(ref paneGuid, "My Window", 1, 1);
        outputWindow.GetPane(ref paneGuid, out var outputPane);
        outputPane.Activate();

        outputPane.OutputString("Starting...\n");
        await TaskScheduler.Default;

        // Call to some async task
        await Task.Delay(2000);

        await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
        outputPane.OutputString("1...\n");
        await TaskScheduler.Default;

        // Call to some async task
        await Task.Delay(2000);

        await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
        outputPane.OutputString("2...\n");
        await TaskScheduler.Default;

        // Call to some async task
        await Task.Delay(2000);

        await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
        outputPane.OutputString("3...\n");
        await TaskScheduler.Default;

        // Call to some async task
        await Task.Delay(2000);

        await ThreadHelper.JoinableTaskFactory.SwitchToMainThreadAsync();
        outputPane.OutputString("Finished");
        await TaskScheduler.Default;
    });
}

谢谢, 周杰伦

您在 UI 线程上并且不 return 控制(而是通过睡眠锁定线程)。因此 UI 无法呈现。您可能希望将其重写为单独的方法或异步方法。