Silverlight之Combox用法

Silverlight中的ComBox控件功能类似.NET中的DropDownList控件，但是用法上又是于DropDownList有点区别.

譬如，我们要做一个年份的下拉框，数据源我们通过一个类来实例化实现。

1、新建一个类

using Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>; using Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Net; using Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Windows; using Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Windows.Controls; using Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Windows.Documents; using Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Windows.Ink; using Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Windows.Input; using Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Windows.Media; using Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Windows.Media.Animation; using Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.Windows.Shapes; namespace TileViewAnimation.Component { public class Year { public string SYear { get; set; } } }

 

2、在MainPage.xaml页面中拖入ComBox控件，在构造函数中实例化并进行绑定绑定。

//年份数据源 List<Year> years = new List<Year>() { new Year(){ SYear="2008"},new Year(){ SYear="2009"},new Year(){ SYear="2010"},new Year(){ SYear="2011"},new Year(){ SYear="2012"},new Year(){ SYear="2013"},new Year(){ SYear="2014"},new Year(){ SYear="2015"},new Year(){ SYear="2016"},new Year(){ SYear="2017"} };

 

3、数据绑定和显示成员设置

this.cbstart_year.ItemsSource = years; this.cbstart_year.<a href="https://www.jb51.cc/tag/dis/" target="_blank" class="keywords">dis</a>playMemberPath = "SYear";

 

4、获取当前年份，并让当前年份处于被选中状态

//根据实际时间进行下拉框数据的绑定 string year = Sy<a href="https://www.jb51.cc/tag/stem/" target="_blank" class="keywords">stem</a>.DateTime.<a href="https://www.jb51.cc/tag/Now/" target="_blank" class="keywords">Now</a>.Year.ToString(); //年份索引 int index_year = -1; for (int i = 0; i < years.Count; i++) { if (years[i].SYear == year) index_year = i; } this.cbstart_year.Selecte<a href="https://www.jb51.cc/tag/dind/" target="_blank" class="keywords">dind</a>ex = index_year;