Multiple keystrokes per character?

2 posts, 1 answers
  1. Charles
    Charles avatar
    75 posts
    Member since:
    Aug 2008

    Posted 12 Oct 2010 Link to this post

    I am using the RadComboBox with a WCF service and autocomplete similar to the sample in Valeri Histov's blog ( This was working until a recent upgrade to the Silverlight controls to the 2010.2.924 release. (This is a Silverlight 4 application and has been since I created it.)

    I have the RadComboBox Text property bound to a property in a view model (Two-Way Binding) and, upon attempting to debug the problem, found that the property is getting updated three times for each keystroke. For example, if I type "c" into the combo box, the first time through the Text property is "c". But, then I get a second time through and it is set to an empty string and, finally, a third time where it is set to null.This setting to null causes a problem with the code that gets the correct items for the autocomplete. Again, the sample is very close to what Valeri did in his blog.

    I can't find anywhere where I would be updating that property and causing it to come through the property getter/setter again, so at this point I'm wondering if there is some change to the way the RadComboBox handles keystrokes that would cause this problem.

    Any help would be appreciated.
  2. Answer
    George avatar
    1332 posts

    Posted 15 Oct 2010 Link to this post

    Hello Charles,

    We reproduced the issue. Thank you for reporting this bug, it helps us in improving our products. I am glad to update your points for reporting this abnormal behavior of our RadComboBox control. We will investigate the cause for this issue and we will fix it in one of our future releases. You can track this progress in our Public Issue Tracking System (PITS) with Issue ID = 3745.

    At this moment I would suggest you to check whether the value in the setter is null. I hope this helps.

    Best wishes,
    the Telerik team
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