Edit Question - KnowledgeHub

Title Body

I have a very simple test app just to play around with Windows Phone 7. I've just added a TextBox and a TextBlock to the standard UI template. The only custom code is the following: public partial class MainPage : PhoneApplicationPage { public MainPage() { InitializeComponent(); } private int counter = 0; private void TextBoxChanged(object sender, TextChangedEventArgs e) { textBlock1.Text += "Text changed " + (counter++) + "\r\n"; } } The TextBox.TextChanged event is wired up to TextBoxChanged in the XAML: <TextBox Height="72" HorizontalAlignment="Left" Margin="6,37,0,0" Name="textBox1" Text="" VerticalAlignment="Top" Width="460" TextChanged="TextBoxChanged" /> However, every time I press a key when running in the emulator (either the on-screen keyboard or the physical one, having pressed Pause to enable the latter) it increments the counter twice, displaying two lines in the TextBlock . Everything I've tried shows that the event is genuinely firing twice, and I've no idea why. I've verified that it's only being subscribed once - if I unsubscribe in the MainPage constructor, nothing happens at all (to the text block) when the text changes. I've tried the equivalent code in a regular Silverlight app, and it didn't occur there. I don't have a physical phone to reproduce this with at the moment. I haven't found any record of this being a known problem in the Windows Phone 7. Can anyone explain what I'm doing wrong, or should I report this as a bug? EDIT: To reduce the possibility of this being down to having two text controls, I've tried removing the TextBlock completely, and changing the TextBoxChanged method to just increment counter . I've then run in the emulator, typed 10 letters and then<

Tags (comma-separated) Cancel