'宣言
Public Overridable Property HeaderPath As System.String
public virtual System.string HeaderPath {get; set;}
解説
The default value for this property is null, which causes the control to display the same content in the input element as in the selected item of the drop-down list. Use this property if you want to de-couple the value shown in the input element from the values shown in the drop-down list. For example, the input element could show an item's name and the drop-down list could show additional detail.