WPF怎么实现ComboBox和Label之间的数据绑定

Question

弄了个ComboBox下拉菜单{0,1,...,7}然后我想通过在下拉菜单中选择一项数值在Label控件显示出来，达到数据同步的效果。请问怎么实现啊？
还有怎么获取系统时间啊？我想一起在Label控件中显示出来。comboboxwpflabel控件绑定

Answer 1

<Window x:Class="WpfApplication3.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="3*" />
</Grid.RowDefinitions>
<Label Content="{Binding ElementName=comb, Path=SelectedValue.Content, Mode=OneWay}" />
<ComboBox Grid.Row="1" Height="23" HorizontalAlignment="Left" Width="120" Name="comb" >
<ComboBoxItem Content="1"  />
<ComboBoxItem Content="2" />
<ComboBoxItem Content="3" />
<ComboBoxItem Content="4" />
<ComboBoxItem Content="5" />
<ComboBoxItem Content="6" />
<ComboBoxItem Content="7" />
</ComboBox>
</Grid>
</Window>

Answer 2

自己解决了。。
    public class Axonia
    {
        public string axoniaID { set; get; }
        public string tWeight { set; get; }
    }    public class AxoniaArr : ObservableCollection<Axonia>
    {
        public AxoniaArr()
        {
            this.Add(new Axonia { tWeight = "6t", axoniaID = "0" });
            this.Add(new Axonia { tWeight = "10t", axoniaID = "1" });
            this.Add(new Axonia { tWeight = "10t", axoniaID = "2" });
            this.Add(new Axonia { tWeight = "14t", axoniaID = "3" });
            this.Add(new Axonia { tWeight = "18t", axoniaID = "4" });
            this.Add(new Axonia { tWeight = "12t", axoniaID = "5" });
            this.Add(new Axonia { tWeight = "22t", axoniaID = "6" });
            this.Add(new Axonia { tWeight = "0t", axoniaID = "7" });
        }
    }<Window x:Class="ComboBox_Binding_sample.W02"  
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"  
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"  
    Title="W02" Height="130" Width="270"  
    xmlns:c="clr-namespace:ComboBox_Binding_sample">  
    <Window.Resources>  
        <c:AxoniaArr x:Key="ec"/>  
    </Window.Resources>  
    <Grid>  
        <Grid.RowDefinitions>  
            <RowDefinition Height="*"/>  
            <RowDefinition Height="*"/>  
        </Grid.RowDefinitions>  
<ComboBox Width="160" Height="25" x:Name="TBAxonia" FontSize="14" ItemsSource="{StaticResource ec}" DisplayMemberPath="axoniaID" SelectedValuePath="tWeight"> <Label Background="#FFFFFFFF" x:Name="TB" Width="160" Height="25" BorderThickness="1,1,1,1" Content="{Binding ElementName=TBAxonia,Path=SelectedValue}"/>    </Grid>  
</Window>