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如何将新列表<t>添加到C#2.0中的另一个列表?

asp.net-2.0 asp.net c#

0

Zo Has · 技术社区 · 14 年前

我只是在列表中添加项,但无法使其生效。它继续抛出预期的错误;,预期的错误)。

using System;
using System.Collections.Generic;

public class Employee
{
    private int _id;
    private string _FName;
    private string _MName;
    private string _LName;
    private DateTime _DOB;
    private char _sex;

public int ID { get { return _id; } set { _id=value; } }
public string FName{get{return _FName;}set{_FName=value;}}
public string MName { get { return _MName; } set { _MName = value; } }
public string LName { get { return _LName; } set { _LName = value; } }
public DateTime DOB { get { return _DOB; } set { _DOB = value; } }
public char Sex { get { return _sex; } set { _sex = value; } }

public List<Employee> GetEmployeeList()
{
    List<Employee> empList=new List<Employee>();
    empList.Add(new Employee() { ID = 1, FName = "John", MName = "", LName = "Shields", DOB = DateTime.Parse("12/11/1971"), Sex = 'M' });
    empList.Add(new Employee() { ID = 2, FName = "Mary", MName = "Matthew", LName = "Jacobs", DOB = DateTime.Parse("01/17/1961"), Sex = 'F' });
    empList.Add(new Employee() { ID = 3, FName = "Amber", MName = "Carl", LName = "Agar", DOB = DateTime.Parse("12/23/1971"), Sex = 'M' });
    empList.Add(new Employee() { ID = 4, FName = "Kathy", MName = "", LName = "Berry", DOB = DateTime.Parse("11/15/1976"), Sex = 'F' });
    return empList;
}
}

2 回复 | 直到 14 年前

1

4

Jon Skeet 14 年前

如果您使用的是ASP.NET 2,那么它可能使用的是C#2编译器(实际上,根据您的标题),它不支持您正在使用的对象初始值设定项语法。如果可能,请尝试升级以使用C#3编译器-或创建 Employee 构造函数获取所有相关参数。

所以这样的表达:

new Employee() { ID = 1, FName = "John", MName = "", LName = "Shields", 
                 DOB = DateTime.Parse("12/11/1971"), Sex = 'M' }

new Employee(1, "John", "", "Shields", "DOB", 'M')

注意如果你是使用C#3编译器,您不必对 Add

var employees = new List<Employee>
{
    new Employee(... stuff here...),
    new Employee(... stuff here...)
};

如果需要,您仍然可以使用对象初始值设定项语法,但是集合初始值设定项语法使它更简单,无论您采用什么方法来构造 雇员 物体。

2

1

Jonas Høgh 14 年前

下面是使用构造函数的完整代码示例:

using System;
using System.Collections.Generic;

public class Employee
{
    private int _id;
    private string _FName;
    private string _MName;
    private string _LName;
    private DateTime _DOB;
    private char _sex;

    public int ID { get { return _id; } set { _id = value; } }
    public string FName { get { return _FName; } set { _FName = value; } }
    public string MName { get { return _MName; } set { _MName = value; } }
    public string LName { get { return _LName; } set { _LName = value; } }
    public DateTime DOB { get { return _DOB; } set { _DOB = value; } }
    public char Sex { get { return _sex; } set { _sex = value; } }

    public Employee(int id, string fname, string mname, string lname, DateTime dob, char sex)
    {
        ID = id;
        FName = fname;
        MName = mname;
        LName = lname;
        DOB = dob;
        Sex = sex;
    }

    public List<Employee> GetEmployeeList()
    {
        List<Employee> empList = new List<Employee>();
        empList.Add(new Employee(1, "John", "", "Shields", DateTime.Parse("12/11/1971"), 'M'));
        //etc
        return empList;
    }
}