Create a video player in Silverlight 2 – Part 2

In part 1 we covered setting up a very basic video player. In part 2 we will add

• Scrubbing the video
• wiring up volume,
• and muting.

In future versions I will show how to display a buffer message, skin the controls, and how to work with media that’s not embedded in the xap.

1. Scrubbing
   • Add a MouseLeftButtonDown and MouseLeftButtonUp events for the slider in the constructor.
     
     
   • Add a property to lock the scrubber while the mouse button is down.
     
   • In the MouseLeftButtonDown event, set the scrubber lock to true.
     
   • In the MouseLeftButtonUp event, release the lock on the scrubber and update the position of the video.
     
   • Finally in the Tick event of the timer, prevent updating the position of the slider while the scrubber is locked.
     
2. Volume
   • XAML. It important to set the Min to 0 and the Max to 1. The MediaElements volume ranges from 0 to 1.
     
   • Register the ValueChanged event in the constructor for the slider.
     
   • Set the video’s volume to the value in the ValueChanged event.
     
   • Set the initial position of the slider to the video’s volume. You can either do this in the CurrentStateChanged event or the MediaOpened event of the MediaElement.
     
3. Mute button
   • XAML, add a ToggleButton
     
   • Register the Checked and UnChecked events in the constuctor for the mute button.
     
     
   • Add a variable to store the previous volume.
     
     
   • Checked event
     
     
   • UnChecked event
     
4. Resulting player
   

Files:
Instead of the whole project (because the video is embedded in the project), here are the two important pieces of this project

XAML

C#

UPDATE

If you are having problems with the Slider not recoginzing MouseLeftButtonUp or MouseLeftButtonDown events, check out the VideoSlider

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