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POAutocomplete Box - Inconsistent values from population
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copied!<p>I have a WPF application with the autocomplete box via the toolkit (VS 2008). I have a potential population of about 2000 records and I have tried to improve performance with a combination of the populating event procedure. I am getting inconsistent results. The filter seems to be OK but I can run the app once and result X will be there but result Y wont. Running it again can make result Y be there and not X, subsequent times both X and Y will be there, etc, etc. This is my first time using the autocomplete box so I'm sure it must be something in my code that I'm forgetting. If I check my result set just prior to the Itemsource binding, the desired results are there, but they are not made visible to the user - the drop-down autocomplete back does not show. Maybe I need an event override???</p> <p><em><strong>The XAML</em></strong></p> <pre><code><input:AutoCompleteBox Name="autGlobal" FilterMode="Contains" Style="{DynamicResource MiniSearchAutoBoxWPF}" IsTextCompletionEnabled="false" Margin="5, 0, 5, 0" HorizontalAlignment="Center" KeyUp="autGlobal_KeyUp" Text="Search Term" GotFocus="autGlobal_GotFocus" ValueMemberPath="Item" Populating="AutoCompleteBox_Populating" > </code></pre> <p><em><strong>The Methods</em></strong></p> <pre><code> private void AutoCompleteBox_Populating(object sender, PopulatingEventArgs e) { e.Cancel = true; var b = new BackgroundWorker(); currSearch = autGlobal.Text; b.DoWork += b_DoWork; b.RunWorkerCompleted += b_RunWorkerCompleted; b.RunWorkerAsync(autGlobal.Text); } private void b_DoWork(object sender, DoWorkEventArgs e) { Results.Clear(); int counter = 0; string search = e.Argument.ToString(); search = search.ToUpper(); foreach (GlobalSearchList person in myGlobalList) { if (person.Item.ToUpper().Contains(search)) { Results.Add(person); counter++; if (counter >= MAX_NUM_OF_RESULTS) { break; } } } } private void b_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e) { if (this.Dispatcher.Thread == System.Threading.Thread.CurrentThread) { //Set the source if (currSearch == autGlobal.Text) { autGlobal.ItemsSource = Results; autGlobal.PopulateComplete(); } } else { this.Dispatcher.Invoke(new Action(() => { //Set the source if (currSearch == autGlobal.Text) { autGlobal.ItemsSource = Results; autGlobal.PopulateComplete(); } })); } } </code></pre>

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