Question

我想知道初始化列表对象时出了什么问题。我们不能在同一个类中创建列表对象。初始化列表对象的规则集是什么？

class Program
   {

     static void Main(string[] args)
        {

         public int ID { get; set; }
         public string Name { get; set; }
         public int Salary { get; set; }

         List<Program> emloyeelist = new List<Program>();

        emloyeelist.Add(new Program() { ID = 1, Name = "Seema", Salary = 10000 });

     **// error shown for  "employeelist" in employee.Add  stating that "field used like type"** 

        emloyeelist.Add(new Program() { ID = 2, Name = "Arun", Salary = 20000 });
        emloyeelist.Add(new Program() { ID = 3, Name = "Nayana", Salary = 30000 });
        emloyeelist.Add(new Program() { ID = 4, Name = "Nayana", Salary = 12000 });
        emloyeelist.Add(new Program() { ID = 5, Name = "Raman", Salary = 55000 });


    foreach (Program emp in emloyeelist)
        {
            if (emp.Salary > 20000)
            {
                Console.WriteLine(emp.Name +" "+"\t"+"has salry"+"\t"+ " " + emp.Salary);
            }

        }


    }
}

Answer 1

将方法外的属性移动到单独的Employee类：

class Employee
{
    public int ID { get; set; }
    public string Name { get; set; }
    public int Salary { get; set; }
}

class Program
{
    static void Main(string[] args) {
        List<Employee> emloyeelist = new List<Employee>();

        emloyeelist.Add(new Employee() { ID = 1, Name = "Seema", Salary = 10000 });
        emloyeelist.Add(new Employee() { ID = 2, Name = "Arun", Salary = 20000 });
        emloyeelist.Add(new Employee() { ID = 3, Name = "Nayana", Salary = 30000 });
        emloyeelist.Add(new Employee() { ID = 4, Name = "Nayana", Salary = 12000 });
        emloyeelist.Add(new Employee() { ID = 5, Name = "Raman", Salary = 55000 });

        foreach (Employee emp in emloyeelist)
        {
            if (emp.Salary > 20000)
            {
                Console.WriteLine(emp.Name +" "+"\t"+"has salry"+"\t"+ " " + emp.Salary);
            }
        }
    }
}

Answer 2

您需要定义List<T>可以使用的自定义类。试试这样：

public class Employee
{
    public int ID { get; set; }
    public string Name { get; set; }
    public decimal Salary { get; set; }
}

在此之后使用您的列表：

List<Employee> EmpList = new List<Employee>();

/*Add your data to the list */

foreach (Employee emp in emloyeelist)
{
   if (emp.Salary > 20000)
   {
       Console.WriteLine(emp.Name +" "+"\t"+"has salry"+"\t"+ " " + emp.Salary);
   }

}

这样，您可以将所需数据包装在自定义对象中，该对象仅用于包含此数据。你不需要强奸program课程。

C＃：初始化List对象时出错

2 个答案: