wpf ComboBox get the text content of the selected item

One: Get the selected item according to the data source type

kind:

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; }
    }

Datasource binding:

            // Bind country 
            cbe_Nationality.ItemsSource = new List<Region> ()
            {
                new Region() { REGION_ID=1, REGION_NAME="中国"},
                new Region() { REGION_ID=2, REGION_NAME="美国"}
            };
            cbe_Nationality.SelectedValuePath = "REGION_ID";
            cbe_Nationality.DisplayMemberPath = "REGION_NAME";
            this.cbe_Nationality.SelectedIndex = 0;

Get the selected item and take out the text display content in it:

            // Get binding information 
            Region cbi = ( this .cbe_Nationality.SelectedItem) as Region;

 Get the selected item and convert it into an object, you can get the value and text inside