对象以逗号分隔的字符串

Question

有没有办法让逗号与对象分开。请注意其对象不是对象列表

例如：

public class EmployeeLogReportListViewModel
{
    public DateTime Date { get; set; }
    public int EmployeeID { get; set; }
    public TimeSpan Time { get; set; }
    public int Sort { get; set; }
    public string Employer { get; set; }
}

具有以下值

Date = "2018/02/03"
EmployeeID = 111
Time = 11:53 AM
Sort = 1
Employer = EMP

这应该导致

2018/02/03,111,11:53 AM,1 EMP

做到这一点的最佳方法是什么？可能的单行代码导致我不想使用字符串构建器并附加所有这些。

Answer 1

接受挑战

var o = new EmployeeLogReportListViewModel();
var text = string.Join
(
    ",",
    typeof(EmployeeLogReportListViewModel)
        .GetProperties(BindingFlags.Instance | BindingFlags.Public)
        .Select
        (
            prop => prop.GetValue(o).ToString()
        )
);
Console.WriteLine(text);

从技术上讲，这是一条线。

Answer 2

我认为你正在寻找覆盖.ToString()方法。你必须像这样修改类：

public class EmployeeLogReportListViewModel
{
    public DateTime Date { get; set; }
    public int EmployeeID { get; set; }
    public TimeSpan Time { get; set; }
    public int Sort { get; set; }
    public string Employer { get; set; }
    public override string ToString()
    {
        return String.Format("{0},{1},{2},{3},{4}", this.Date, this.EmployeeID, this.Time, this.Sort, this.Employer);
    }
}

Usage Example：

EmployeeLogReportListViewModel objVm = new EmployeeLogReportListViewModel();
// Assign values for the properties
objVm.ToString(); // This will give you the expected output