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Silverlight for Windows Phone Programming Tip #5

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Quick: can you spot what’s wrong with this XAML?     If you answered that setting IsIndeterminant to true on a ProgressBar control in Silverlight for Windows Phone debilitates performance, go to the head of the class! If not, read on. If you use Silverlight for Windows Phone’s networking stack to download content or call Web services, you probably use the ProgressBar control a lot. If you’re downloading content with a WebClient, you may not use the ProgressBar’s IsIndeterminant property, because WebClient fires DownloadProgressChanged events that you can use to
step the ProgressBar and keep the user informed about the progress of the download. But if you’re using HttpWebRequest to call REST services or Web-service proxies to call WCF services, you typically set the ProgressBar’s IsIndeterminant property true to display those running blue dots seen in applications such as Microsoft’s Facebook client for Windows Phone. It’s a nice thing to do from a UI perspective, because once you put a call on the wire, you have no control over how long it takes to complete. Rather than leave the user staring at a blank screen, the indeterminant ProgressBar lets the...(Read whole news on source site)

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