Wednesday, January 17, 2007 #

Minor Errors in WPF/E QuickStart

While working on the last part of the WPF/E QuickStart, I was doing my thing which is normally thinking of other stuff to try to do with the sample code. The slider looked like fun, and I thought if I started it in the center instead of on the left that would be interesting. The outer Canvas in the xaml already had a Loaded= line in it, so I simply used it to try to set the center.

'Loaded' was pointed at "javascript::slider_loaded. That in turn called slider_SetValue. So I changed this call to pass 100 instead of 0.

And it didn't work. Hmmm

A couple of alerts pointed out more than one problem with the original code:

  • The Loaded= line in the xaml calls out "slider_loaded", but the actual javascript is named "slider_Loaded", so no matter what the value was set to, it wasn't being called.
  • Once I had that repaired, it still wasn't working because the call from slider_Loaded to slider_SetValue was passing 'slider' instead of 'sender'. There is no variable named 'slider'.

These are both reasonably minor, but if someone is trying to use the QuickStart code as a springboard to other things, it will slow them down.

I downloaded the latest WPF/E QuickStart and documentation from late December, and the problems are still there.

This article is essentially mirrored on my site in the WPF/E Tutorial section:

http://www.wynapse.com/WPFE/Tutor/Minor_QuickStart_Errors.aspx
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Posted On Wednesday, January 17, 2007 8:28 PM | Feedback (0)
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