1.ComBox(模板)包含CheckBox,TreeView
http://demos.telerik.com/aspnet-ajax/combobox/examples/functionality/templates/defaultcs.aspx
2.ComBox自动完成
http://demos.telerik.com/aspnet-ajax/combobox/examples/functionality/filteringcombo/defaultcs.aspx
3.ComBox联动
4.ComBox下拉多列
http://demos.telerik.com/aspnet-ajax/combobox/examples/functionality/multicolumncombo/defaultcs.aspx
5.ComBox绑定数据源
绑定XML文件