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Tick Event
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DispatcherTimer.Tick Event

Occurs when the timer interval has elapsed.

Namespace:  System.Windows.Threading
Assembly:  WindowsBase (in WindowsBase.dll)
XMLNS for XAML: Not mapped to an xmlns.

public event EventHandler Tick

The following example creates a Tick event handler. The event handler updates a Label that displays the current second, and it calls InvalidateRequerySuggested on the CommandManager.

//  System.Windows.Threading.DispatcherTimer.Tick handler 
// 
//  Updates the current seconds display and calls 
//  InvalidateRequerySuggested on the CommandManager to force  
//  the Command to raise the CanExecuteChanged event. 
private void dispatcherTimer_Tick(object sender, EventArgs e)
{
    // Updating the Label which displays the current second
    lblSeconds.Content = DateTime.Now.Second;

    // Forcing the CommandManager to raise the RequerySuggested event
    CommandManager.InvalidateRequerySuggested();
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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