组合框肯定具有Text属性和SelectedText属性吗?您尝试了什么?

Surely the combobox has a Text property, and a SelectedText property ? What have you tried ?

检查要绑定的源.

尝试在组合中使用DataTemplate-

Check the source you are binding to.

Try using a DataTemplate within the combo -

<ComboBox.ItemTemplate><br />
    <DataTemplate><br />
        <TextBlock Text="{Binding myColumn}" /><br />
    </DataTemplate><br />
</ComboBox.ItemTemplate>