的SelectedValue應該工作
<Window x:Class="WpfApplication3.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
Title="MainWindow" Height="350" Width="525">
<Grid>
<ComboBox Name="comboBox1" Margin="0,0,0,64">
<ComboBox.Items>
<sys:String>a</sys:String>
<sys:String>b</sys:String>
<sys:String>c</sys:String>
<sys:String>d</sys:String>
<sys:String>e</sys:String>
</ComboBox.Items>
</ComboBox>
<TextBox Height="23" Margin="10,0,10,22" TextWrapping="Wrap" Text="{Binding SelectedValue, ElementName=comboBox1}" VerticalAlignment="Bottom"/>
</Grid>
</Window>
你爲什麼不使用'.Text'? – Herdo