MouseLeftButtonUp does not fire all the time in WP7

Question

In my app there is a canvas with a small image (not taking up entire space of canvas). when user clicks on image and drags inside the canvas, it traces the path with a black line. Till here everything works. Now, I want the path to be deleted as soon as the user releases the hold on the mouse. I am using MouseLeftButtonUp on the canvas to detect the mouse release. Now problem is this is working randomly. sometimes it fires and sometimes it does not. Kindly help.

XAML:

 <Canvas Height="400" HorizontalAlignment="Center"  Margin="10,10,0,0" Name="canvas1" VerticalAlignment="Center" Background="Aqua"  Width="400">
 <Image Canvas.ZIndex="30" Canvas.Left="10" Canvas.Top="10" Height="20" Name="dot1" Stretch="Uniform" Width="20" Source="/BoxIt;component/Images/dot.png" MouseLeftButtonDown="dot_MouseLeftButtonDown" />
 </Canvas>

C#:

 this.canvas1.MouseMove += new MouseEventHandler(canvas1_MouseMove);
 this.canvas1.MouseLeftButtonUp += new MouseButtonEventHandler(canvas1_MouseLeftButtonUp);

Eventhandler in C# :

 void canvas1_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
    {
       // code to delete the path
    }

Answer 1

In Windows Phone we are advised to use the Tap, Hold and Manipulation* methods instead of the Mouse related events.

Please read this for more information.