Question

我需要从一个班级到另一个班级。但是我仍然遇到这个错误。

“字段初始值设定项不能引用非静态字段，方法或属性”

我读到我必须得到构造函数的smth，但是没有任何作用。

提前感谢！

namespace NovejKalendar
{
class Program
{
    static void Main(string[] args)
    {            
        Calendar c = new Calendar();
        Day d = new Day();
        c.AddRecord();
        c.Print();
        //Day d = new Day();            

        Console.ReadKey(true);           
    }
}

class Homework
{
    public DateTime dt;         
    public string subject;
    public string content;

    public Homework(DateTime dt, string subject, string content)
    {            
        String.Format("{0:d.m.yyyy HH:mm}", dt);
        //String.Format("{0:d/M/yyyy HH:mm:ss}", dt); // "9.3.2008 16:05:07"
        this.dt = dt;
        this.subject = subject;
        this.content = content;
    }       
}

class Day
{
   List<Homework> hw = new List<Homework>();

   public List<Homework> GetList()
   {
      hw = new List<Homework>();
      return hw;
   } 
}

class Calendar
{
    //List<Homework> hw = new List<Homework>();

    Day d = new Day();
    List<Homework> hw = d.GetList();

    //List<Homework> hw = new List<Homework>();

    public void AddRecord()
    {            
        string a = "9.3.2008 16:05";
        string b = "19.12.2009 16:40";
        string c = "29.5.2005 16:55";
        hw.Add(new Homework(Convert.ToDateTime(a), "M", "ONE"));
        hw.Add(new Homework(Convert.ToDateTime(b), "F", "TWO"));
        hw.Add(new Homework(Convert.ToDateTime(c), "INF", "THREE"));            
    }

    public void PrintCollection<T>(IEnumerable<T> col)
    {
        foreach (var a in col)
            Console.WriteLine(hw);
    }

    public void Print()
    {
        foreach (var p in hw)
        {
            Console.WriteLine("{0} {1} {2}", p.dt, p.subject, p.content);
        }
    }
}

}

Answer 1

您无法像这样直接初始化字段：

List<Homework> hw = d.GetList();

相反，只需定义变量并在类构造函数中初始化它。

class Calendar
{
    List<Homework> hw;

    public Calendar()
    {
       hw = d.GetList();
    }

    ...
}

错误消息很清楚..

＆＃34;字段初始值设定项不能引用非静态字段，方法，或财产＆＃34;

字段初始值设定项不能引用非静态字段，方法或属性C＃

1 个答案: