为什么我的autocompletebox不显示任何数据？

Question

我有一个silverlight autocompletebox，我在codebehind.cs中添加ItemsSource，也设置了valuemember路径，它不显示任何数据。

这是代码，

<sdk:AutoCompleteBox   Margin="105,2,40,0" ItemsSource="{Binding}" ValueMemberPath="Code" FilterMode="Contains" IsTextCompletionEnabled="True" x:Name="txtcode"  Height="23" VerticalAlignment="Top" TabIndex="1" TabNavigation="Local" >
                            <sdk:AutoCompleteBox.ItemTemplate>
                                <DataTemplate>
                                    <TextBlock  />
                                </DataTemplate>
                            </sdk:AutoCompleteBox.ItemTemplate>
                        </sdk:AutoCompleteBox>

txtcode.ItemsSource = collection;

Answer 1

可能你错过了DataTemplate中的这个，

<TextBlock Text="{Binding Code}" />

Answer 2

您应该首先绑定该文本框

示例代码：

  <sdk:AutoCompleteBox   Margin="105,2,40,0" ItemsSource="{Binding}" ValueMemberPath="Code" FilterMode="Contains" IsTextCompletionEnabled="True" x:Name="txtcode"  Height="23" VerticalAlignment="Top" TabIndex="1" TabNavigation="Local" >
                                <sdk:AutoCompleteBox.ItemTemplate>
                                    <DataTemplate>
                                       <TextBlock Text="{Binding Item}" />
                                    </DataTemplate>
                                </sdk:AutoCompleteBox.ItemTemplate>
                            </sdk:AutoCompleteBox>

    txtcode.ItemsSource = collection;