两处:
private string type = "";
public string Type { get{return type;} set{type= value;} }
private string place = "";
public string Place { get { return place; } set { place = value; } } Console.WriteLine(string.Format("型号为{0},产地为{1}的汽车正在行驶!", this.Type, this.Place));//注意括号位置...