AutoCompleteBox 异步调用WCF 为什么结果不显示？该怎么处理

AutoCompleteBox 异步调用WCF 为什么结果不显示？
<input:AutoCompleteBox x:Name="AutoBox" Height="22" Margin="91,6,0,0" VerticalAlignment="Top" Width="180" RenderTransformOrigin="0.5,1" MinimumPrefixLength="0" MaxDropDownHeight="0" Populating="AutoBox_Populating" HorizontalAlignment="Left">
  <input:AutoCompleteBox.ItemTemplate>
  <DataTemplate>
  <StackPanel>
  <TextBlock Text="{Binding}" />
  </StackPanel>
  </DataTemplate>
  </input:AutoCompleteBox.ItemTemplate>
  </input:AutoCompleteBox>

  private void AutoBox_Populating(object sender, System.Windows.Controls.PopulatingEventArgs e)
  {
  e.Cancel = true;
  src = objMessage.GetAutoStrings(AutoBox.Text);
  AutoBox.ItemsSource = list;//list里面读取到string集合了
  AutoBox.PopulateComplete();
  }
界面输入数据时，数据不会显示出来，不知道哪里出问题了？？？

[解决办法]
AutoBox_Populating事件需要在构造函数中调用进行数据初始化。

试试：

XML code

<UserControl xmlns:input="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Input"  x:Class="SL3_test1.SilverlightControl23"    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"             xmlns:my="clr-namespace:SL3_test1"    Width="400" Height="300">    <Grid x:Name="LayoutRoot" Background="White">        <Grid.Resources>            <my:ColorConverter x:Name="cc1"/>        </Grid.Resources>        <StackPanel>            <input:AutoCompleteBox Name="acb1" ValueMemberBinding="{Binding Name}">                <input:AutoCompleteBox.ItemTemplate>                    <DataTemplate>                        <TextBlock Text="{Binding Name}" Foreground="{Binding Status,Converter={StaticResource cc1}}"/>                    </DataTemplate>                </input:AutoCompleteBox.ItemTemplate>            </input:AutoCompleteBox>        </StackPanel>    </Grid></UserControl>