/// <summary>
/// Runs the function inside a message loop and continues pumping messages
/// until the returned task completes.
/// </summary>
/// <returns>The completed task returned by the delegate's invocation</returns>
public static Task Run(Func <Task> function)
{
using (SynchronizationContextSwitcher.Capture())
{
Dispatcher dispatcher = Dispatcher.CurrentDispatcher;
DispatcherFrame frame = new DispatcherFrame(exitWhenRequested: true);
var message = new TaskFunctionLaunchMessage(function, dispatcher, frame);
// queue up our first message before we run the loop
dispatcher.BeginInvoke(new Action(message.LaunchMessageImpl));
// run the actual WPF message loop
Dispatcher.PushFrame(frame);
// PushFrame() has returned. Because we set Contine = false
// in a continuation of the task, this can only occur if the task
// has also completed.
if (message.ReturnedTask != null)
{
message.ReturnedTask.RethrowForCompletedTasks();
}
return(message.ReturnedTask);
}
}
/// <summary>
/// Runs the function inside a message loop and continues pumping messages
/// until the returned task completes.
/// </summary>
/// <returns>The completed task returned by the delegate's invocation</returns>
public static Task Run(Func <Task> function)
{
using (InstallerAndRestorer.Install())
{
// InstallerAndRestorer ensures the WinForms context is installed
var winFormsContext = SynchronizationContext.Current;
var message = new TaskFunctionLaunchMessage(function, winFormsContext);
// queue up our first message before we run the loop
winFormsContext.Post(message.LaunchMessageImpl, state: null);
// run the actual WinForms message loop
Application.Run();
if (message.ReturnedTask != null)
{
message.ReturnedTask.RethrowForCompletedTasks();
}
return(message.ReturnedTask);
}
}
