C #, WPF-- get combobox option value

Using the Event:
By SelectionChange event. The value selected by the event can be obtained. Timely access to the value of the state change. Bycomlevels.SelectedValue.ToString()
value obtained change. But this time there will beSystem.Windows.Controls.ComboBoxItem: texta prefix, as the argument is not applicable. At this time, usingreplacea function to replace the prefix. At this parameter will get what we want