C# 日期相減

[C#]日期相減

using System;
 
using System.Collections.Generic;
 
using System.Linq;
 
using System.Web;
 
using System.Web.UI;
 
using System.Web.UI.WebControls;
 
 
 
public partial class Test_tsDateSubtract : System.Web.UI.Page
 
{
 
    protected void Page_Load(object sender, EventArgs e)
 
    {
 
        DateTime StartTime = DateTime.Parse("2013-05-20"); //開始日
 
        //DateTime EndTime = DateTime.Parse("2013-05-21"); //指定結束日
 
        DateTime EndTime = DateTime.Now; //當日
 
        TimeSpan TS = EndTime.Subtract(StartTime); //日期相減
 
 
 
        Response.Write(TS.Days.ToString() + "<br>");         //天(int)
 
        Response.Write(TS.Hours.ToString() + "<br>");        //小時(int)
 
        Response.Write(TS.Minutes.ToString() + "<br>");      //分(int)
 
 
 
        Response.Write(TS.TotalDays.ToString() + "<br>");    //天(double)
 
        Response.Write(TS.TotalHours.ToString() + "<br>");   //小時(double)
 
        Response.Write(TS.TotalSeconds.ToString() + "<br>"); //分(double)
 
    }
 
}