#849 – You Can Hold a RepeatButton Down

A Button fires its Click event when you press and release the left mouse button.  A RepeatButton, on the other hand, fires Click events continuously, as long as you continue holding the left mouse button down.

For example:

        <RepeatButton Content="Hold Me Down"
                      HorizontalAlignment="Center"
                      Margin="10" Padding="10,5"
                      Click="RepeatButton_Click"/>
        <TextBlock Text="{Binding MyCounter, Mode=OneWay}"
                   HorizontalAlignment="Center"
                   FontSize="48" Margin="20"/>

In the code-behind, we increment a counter every time the Click event is fired.

    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        public MainWindow()
        {
            this.InitializeComponent();
            this.DataContext = this;
        }

        public event PropertyChangedEventHandler PropertyChanged = delegate { };

        private void RaisePropertyChanged(string propName)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(propName));
        }

        private int myCounter = 0;
        public int MyCounter
        {
            get { return myCounter; }
            protected set
            {
                if (value != myCounter)
                {
                    myCounter = value;
                    RaisePropertyChanged("MyCounter");
                }
            }
        }

        private void RepeatButton_Click(object sender, RoutedEventArgs e)
        {
            MyCounter++;
        }
    }

The number increases while we hold the left mouse button down.
849-001

About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

One Response to #849 – You Can Hold a RepeatButton Down

  1. Pingback: Dew Drop – June 25, 2013 (#1,572) | Alvin Ashcraft's Morning Dew

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