PleasantSnackbar

A temporary pill-shaped notification that appears at the bottom of the window. Supports severity variants, title, action buttons, close button, and Closing/Closed events.

Basic usage

PleasantSnackbar.Show(window, new PleasantSnackbarOptions("File saved successfully.")
{
    Icon             = MaterialIcons.CheckCircleOutline,
    NotificationType = NotificationType.Success
});

PleasantSnackbarOptions

Property	Type	Default	Description
Message	string	required	Body text
Title	string?	null	Bold title above the message — pill expands vertically
Icon	Geometry?	null	Icon shown in the colored pill on the left
NotificationType	Information / Success / Warning / Error	Information	Controls the icon pill color
TimeSpan	TimeSpan	3 s	How long the snackbar stays visible
ButtonText	string?	null	Text for an inline action button
ButtonAction	Action?	null	Callback when the action button is clicked
ActionButton	Control?	null	Arbitrary control in the action slot (overrides ButtonText/ButtonAction)
IsClosable	bool	false	Shows a × dismiss button
Closing	EventHandler<SnackbarClosingEventArgs>?	null	Fired before close — set Cancel = true to prevent it
Closed	EventHandler<SnackbarClosedEventArgs>?	null	Fired after close with the SnackbarCloseReason

Severity variants

// Information (default)
PleasantSnackbar.Show(window, new PleasantSnackbarOptions("Update available."));

// Success
PleasantSnackbar.Show(window, new PleasantSnackbarOptions("Saved.")
    { NotificationType = NotificationType.Success, Icon = MaterialIcons.CheckCircleOutline });

// Warning
PleasantSnackbar.Show(window, new PleasantSnackbarOptions("Low disk space.")
    { NotificationType = NotificationType.Warning, Icon = MaterialIcons.AlertOutline });

// Error
PleasantSnackbar.Show(window, new PleasantSnackbarOptions("Upload failed.")
    { NotificationType = NotificationType.Error, Icon = MaterialIcons.CloseCircleOutline });

With title (two-line pill)

PleasantSnackbar.Show(window, new PleasantSnackbarOptions("Your changes have been saved to the cloud.")
{
    Title            = "Saved",
    Icon             = MaterialIcons.CloudCheckOutline,
    NotificationType = NotificationType.Success
});

With action button

PleasantSnackbar.Show(window, new PleasantSnackbarOptions("Item moved to trash.")
{
    ButtonText   = "Undo",
    ButtonAction = () => RestoreItem()
});

With custom action control

var btn = new Button { Content = "View", Theme = accentTheme };
btn.Click += (_, _) => OpenDetails();

PleasantSnackbar.Show(window, new PleasantSnackbarOptions("New update available.")
{
    ActionButton = btn
});

Closable with events

PleasantSnackbar.Show(window, new PleasantSnackbarOptions("Background sync running.")
{
    IsClosable = true,
    TimeSpan   = TimeSpan.FromSeconds(10),
    Closing    = (_, args) =>
    {
        if (args.Reason == SnackbarCloseReason.CloseButton)
            CancelSync();
    },
    Closed = (_, args) => Console.WriteLine($"Closed: {args.Reason}")
});

Show overloads

PleasantSnackbar.Show(options);                    // uses active window
PleasantSnackbar.Show(window, options);            // Window
PleasantSnackbar.Show(pleasantWindow, options);    // IPleasantWindow
PleasantSnackbar.Show(topLevel, options);          // TopLevel