List<CategoryInfo> categoryList = new List<CategoryInfo>();
categoryList.Add(new CategoryInfo{Name="English", Value="en_US"});//英语
categoryList.Add(new CategoryInfo{Name="中文", Value="zh_CN"});//中文
categoryList.Add(new CategoryInfo{Name="日本語", Value="ja_JP"});//日语

4. 通过ItemSource给ComboBox绑定数据 

comboType.ItemsSource = categoryList;
//这里的Name和Value不能乱填哦
comboType.DisplayMemberPath = "Name";//显示出来的值
comboType.SelectedValuePath = "Value";//实际选中后获取的结果的值

5.代码中处理选中的值  

 private void Button_Click(object sender, RoutedEventArgs e)
       //如显示的是English,这里的SelectedValue的值就是en_US
        string langName = cbLang.SelectedValue.ToString();