vsix 实验实例中的事件只工作一次

Question

我创建了一个 VSIX 项目包并添加了一些事件，这些事件应该在调试器启动时被调用。

 [PackageRegistration(UseManagedResourcesOnly = true, AllowsBackgroundLoading = true)]
[InstalledProductRegistration("#110", "#112", "1.0", IconResourceID = 400)] // Info on this package for Help/About
[ProvideAutoLoad(UIContextGuids80.Debugging)]
[Guid(FirstPackage.PackageGuidString)]
public sealed class FirstPackage : AsyncPackage, _dispDebuggerEvents
{
    public const string PackageGuidString = "5ed493bb-1bfd-4946-a427-e400ee8653d9";

    protected override async Task InitializeAsync(CancellationToken cancellationToken, IProgress<ServiceProgressData> progress)
    {
        // Garbage Collector ?
        await base.InitializeAsync(cancellationToken, progress);
        await this.JoinableTaskFactory.SwitchToMainThreadAsync(cancellationToken);
        EnvDTE80.DTE2 dte = (EnvDTE80.DTE2)Microsoft.VisualStudio.Shell.Package.GetGlobalService(typeof(DTE));
        DebuggerEvents _debuggerEvents = dte.Events.DebuggerEvents;
        _debuggerEvents.OnEnterRunMode += OnEnterRunMode;
        _debuggerEvents.OnEnterBreakMode += OnEnterBreakMode;
    }

    public void OnEnterRunMode(dbgEventReason Reason)
    {
        // do some stuff
    }


    public void OnEnterBreakMode(dbgEventReason Reason, ref dbgExecutionAction ExecutionAction)
    {
        // do some other stuff
    }

这是我当前的代码。如果我启动程序，事件将被初始化，并且通过在我的实验实例中启动调试器也会触发。我目前的问题是，它只在我第一次调试实验实例时起作用。

Answer 1

您只需确保 DebuggerEvents 不会超出范围，这样您的事件处理程序就不会被 .NET 垃圾收集器吃掉。

例如：

public sealed class FirstPackage : AsyncPackage, _dispDebuggerEvents
{
    public const string PackageGuidString = "5ed493bb-1bfd-4946-a427-e400ee8653d9";
    private DebuggerEvents _debuggerEvents;

    protected override async Task InitializeAsync(CancellationToken cancellationToken, IProgress<ServiceProgressData> progress)
    {
        // Garbage Collector ?
        await base.InitializeAsync(cancellationToken, progress);
        await this.JoinableTaskFactory.SwitchToMainThreadAsync(cancellationToken);
        EnvDTE80.DTE2 dte = (EnvDTE80.DTE2)Microsoft.VisualStudio.Shell.Package.GetGlobalService(typeof(DTE));
        _debuggerEvents = dte.Events.DebuggerEvents;
        _debuggerEvents.OnEnterRunMode += OnEnterRunMode;
        _debuggerEvents.OnEnterBreakMode += OnEnterBreakMode;
    }