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POhow to dismiss the dropdown list of an autocompletebox in windows phone 7
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  1. POhow to dismiss the dropdown list of an autocompletebox in windows phone 7
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    copied!<p>is there anyway to programmatically dismiss the drop-down list of an autocompletebox? my use case is as follows.</p> <p>MainPage.xaml passes a value to SearchPage.xaml (i.e. /SearchPage.xaml?query=someText).</p> <p>in SearchPage.xaml.cs, i set, </p> <pre><code>autoCompleteBox.Text = NavigationContext.QueryString["query"]. </code></pre> <p>at this point, the drop-down list of suggested matches shows up. i don't want this behavior when the page is just navigated to.</p> <p>i also tried the following to dismiss the drop-down list but it didn't help.</p> <pre><code>autoCompleteBox.Text = NavigationContext.QueryString["query"]; autoCompleteBox.IsDropDownOpen = false; </code></pre> <p>the drop-down list seems to go away from the AutoCompleteBox when it loses focuses, but i don't see a property/field to set to make it lose focus.</p> <p>any help is appreciated.</p> <p>well, i tinkered a bit and came up with a kludge. in the constructor of SearchPage.xaml.cs i have the following code.</p> <pre><code>autoCompleteBox.TextFilter += DummyFilter; autoCompleteBox.GotFocus += (s,args) =&gt; { if(!isAutoCompleteBoxInit) { autoCompleteBox.TextFilter -= DummyFilter; autoCompleteBox.TextFilter += RealFilter; } } </code></pre> <p>DummyFilter looks like the following.</p> <pre><code>bool DummyFilter(string search, string value) { return false; } </code></pre> <p>RealFilter looks like the following.</p> <pre><code>bool RealFilter(string search, string value) { if(null != value) return value.ToLower().StartsWith(search.ToLower()); } </code></pre> <p>in my OnNavigatedTo method, is where i set, autoCompleteBox.Text = NavigationContext.QueryString["query"]. so when i do this now, the DummyFilter will always return false, so the drop-down list goes away. when the user focuses in on the AutoCompleteBox, i check if the correct Filter was already attached to the TextFilter property, if not, then i do a switch.</p> <p>hope this helps some of you.</p>
 

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