Creating a timer
Lets move aways from the RSS readers... I hear some guys heaving a sigh of relief... hehe!! So lets start off with a timer which doesnt work as we usually expect it to..it works backwards!! Isnt that what we all wish. Anyway coming to the point, lets have a timer which counts down and on reaching ZERO plays a song. Sounds like a good app to wake you up when you plan to go for a short nap.
The design is simple. We have a grid with the hour/min/secs and buttons for Starting and Reseting. There is a TextBox at the bottom which gives some status messages. :)
The code looks like this in XAML:
Window1.xaml
<Window x:Class="timer.Window1" xmlns=https://schemas.microsoft.com/winfx/avalon/2005 xmlns:x=https://schemas.microsoft.com/winfx/xaml/2005 Title="timer" BorderThickness="1" Height="90" Width ="280" >
<StackPanel> <Grid > <Grid.ColumnDefinitions > <ColumnDefinition Width="auto"/> <ColumnDefinition Width="auto"/> <ColumnDefinition Width="auto"/> <ColumnDefinition Width="auto"/> <ColumnDefinition Width="auto"/> <ColumnDefinition Width="auto"/> <ColumnDefinition Width="auto"/> </Grid.ColumnDefinitions>
<Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions>
<TextBox Grid.Column="0" Grid.Row="0" Text="0" Name="hr"
Width="30" BorderThickness="0"/> <Label Grid.Column="1" Grid.Row="0" Content=":"/> <TextBox Grid.Column="2" Grid.Row="0" Text="0" Name="min"
Width="30" BorderThickness="0"/> <Label Grid.Column="3" Grid.Row="0" Content=":"/> <TextBox Grid.Column="4" Grid.Row="0" Text="0" Name="sec"
Width="30" BorderThickness="0"/> <Button Grid.Column="5" Grid.Row="0" Content="Start" Click="OnClick" /> <Button Grid.Column="6" Grid.Row="0" Content="Reset" Click="OnClick1" /> <TextBox Grid.ColumnSpan="7" Grid.Row="1" Text="Enter Timer Value"
IsEnabled="False" Name="status" BorderThickness="1"/>
</Grid> </StackPanel></Window>
Window1.xaml.cs
public partial class Window1 : Window
{
private Clock clk; //This is a class which keeps track of the time being displayed
private System.Windows.Threading.DispatcherTimer TimerClock;
private void OnClick(object sender, RoutedEventArgs e)
{
if (ValidateValues(hr.Text, min.Text, sec.Text))
{
TimerClock = new System.Windows.Threading.DispatcherTimer(); <br>//Creates a timerClock and enables it TimerClock.Interval = new TimeSpan(0, 0, 1);<br> TimerClock.IsEnabled = true;
clk = new Clock(hr.Text, min.Text, sec.Text);
TimerClock.Tick += new EventHandler(TimerClock_Tick);
}
}
private void OnClick1(object sender, RoutedEventArgs e)
{
TimerClock.IsEnabled = false;
Clock.hr = Clock.min = Clock.sec = 0;
hr.Text = Clock.hr.ToString();
min.Text = Clock.min.ToString();
sec.Text = Clock.sec.ToString();
}
void TimerClock_Tick(object sender, EventArgs e)
{
clk.Decrement();
hr.Text = Clock.hr.ToString();
min.Text = Clock.min.ToString();
sec.Text = Clock.sec.ToString();
if (Clock.completed)<br> {<br> TimerClock.IsEnabled = false;
SoundPlayer player = new SoundPlayer(@"gurgle.wav"); <br>//Plays the spoilsport of your sleep ;) player.Play();
}
}
private bool ValidateValues(string hr1, string min1, string sec1)
{
//Validate values }
}
public partial class Clock
{
public static int hr, min, sec;
public static bool completed;
public Clock() { }
public Clock(string hr1, string min1, string sec1)
{
completed = false;
hr = int.Parse(hr1);
min = int.Parse(min1);
sec = int.Parse(sec1);
}
public void Decrement()
{
//Decrement the hours/mins/secs }
public string TimeLeft()
{
return (hr.ToString() + ":" + min.ToString() + ":" + sec.ToString());
}
}
The new things in play that we see here are the SoundPlayer and the Timer which fit in seamlessly with the Avalon code.
So cut short your naps with a simple timer!!