public class Region

    {

        public int REGION_ID { get; set; }

        public string REGION_CODE { get; set; }

        public string REGION_NAME { get; set; }

        public int PARENT_ID { get; set; }

    }

            //绑定国家

            cbe_Nationality.ItemsSource = new List<Region>()

            {

                new Region() { REGION_ID=, REGION_NAME="中国"},

                new Region() { REGION_ID=, REGION_NAME="美国"}

            };

            cbe_Nationality.SelectedValuePath = "REGION_ID";

            cbe_Nationality.DisplayMemberPath = "REGION_NAME";

            this.cbe_Nationality.SelectedIndex = ;

            //获取绑定信息

            Region cbi = (this.cbe_Nationality.SelectedItem) as Region;