public static Task<MessageBoxResult> ShowAsync(
string header,
string content,
MessageBoxButton button = MessageBoxButton.OK,
MessageDialogType type = MessageDialogType.Light,
System.Windows.Window owner = null)
{
TaskCompletionSource<MessageBoxResult> taskCompletionSource = new TaskCompletionSource<MessageBoxResult>();
if (owner == null)
{
owner = Application.Current.Windows.OfType<Window>().SingleOrDefault(x => x.IsActive);
}
MessageDialog messageDialog = new MessageDialog()
{
Content = content
};
OverlayWindow window = new OverlayWindow()
{
Content = messageDialog,
Owner = owner
};
switch (type)
{
case MessageDialogType.Accent:
window.Style = (Style)window.FindResource("AccentOverlayWindowStyle");
break;
case MessageDialogType.Dark:
window.Style = (Style)window.FindResource("DarkOverlayWindowStyle");
break;
}
messageDialog.Header = new TextBlock()
{
Style = (Style)window.FindResource("HeaderTextStyle"),
Text = header
};
if ((button == MessageBoxButton.OK) ||
(button == MessageBoxButton.OKCancel))
{
messageDialog.Items.Add(
new MessageDialogButton()
{
Command = new DelegateCommand(
() =>
{
if (!taskCompletionSource.Task.IsCompleted)
{
window.Close();
taskCompletionSource.SetResult(MessageBoxResult.OK);
}
}),
Content = "Ok"
});
}
if ((button == MessageBoxButton.YesNo) ||
(button == MessageBoxButton.YesNoCancel))
{
messageDialog.Items.Add(
new MessageDialogButton()
{
Command = new DelegateCommand(
() =>
{
if (!taskCompletionSource.Task.IsCompleted)
{
window.Close();
taskCompletionSource.SetResult(MessageBoxResult.Yes);
}
}),
Content = "Yes"
});
messageDialog.Items.Add(
new MessageDialogButton()
{
Command = new DelegateCommand(
() =>
{
if (!taskCompletionSource.Task.IsCompleted)
{
window.Close();
taskCompletionSource.SetResult(MessageBoxResult.No);
}
}),
Content = "No"
});
}
if ((button == MessageBoxButton.OKCancel) ||
(button == MessageBoxButton.YesNoCancel))
{
messageDialog.Items.Add(
new MessageDialogButton()
{
Command = new DelegateCommand(
() =>
{
if (!taskCompletionSource.Task.IsCompleted)
{
window.Close();
taskCompletionSource.SetResult(MessageBoxResult.Cancel);
}
}),
Content = "Cancel"
});
}
messageDialog.CancelCommandIndex = messageDialog.Items.Count - 1;
window.Show();
return taskCompletionSource.Task;
}
public static Task<MessageBoxResult> ShowAsync(
string header,
string content,
IEnumerable<MessageDialogButton> buttons,
MessageDialogType type = MessageDialogType.Light,
System.Windows.Window owner = null,
int defaultCommandIndex = 0,
int cancelCommandIndex = -1)
{
TaskCompletionSource<MessageBoxResult> taskCompletionSource = new TaskCompletionSource<MessageBoxResult>();
if (owner == null)
{
owner = Application.Current.Windows.OfType<Window>().SingleOrDefault(x => x.IsActive);
}
MessageDialog messageDialog = new MessageDialog()
{
Header = header,
Content = content
};
OverlayWindow window = new OverlayWindow()
{
Content = messageDialog,
Owner = owner
};
switch (type)
{
case MessageDialogType.Accent:
window.Style = (Style)window.FindResource("AccentOverlayWindowStyle");
break;
case MessageDialogType.Dark:
window.Style = (Style)window.FindResource("DarkOverlayWindowStyle");
break;
}
foreach (MessageDialogButton button in buttons)
{
messageDialog.Items.Add(button);
}
if (cancelCommandIndex == -1)
{
messageDialog.CancelCommandIndex = messageDialog.Items.Count - 1;
}
window.Show();
messageDialog
.FindVisualChildren<Button>()
.ToList()
.ForEach(
x => x.Click += (sender, e) =>
{
if (!taskCompletionSource.Task.IsCompleted)
{
window.Close();
taskCompletionSource.SetResult(MessageBoxResult.None);
}
});
return taskCompletionSource.Task;
}