How to find days between two dates in c#.net

How to find days between two dates in c#.net

DateTime dt1 = new DateTime(2011, 01, 01);

DateTime dt2 = new DateTime(2011, 01, 20);

int ireturn = (int)dt2.Subtract(dt1).TotalDays;

(or)

var elapsedDays = (endDate - initialDate).TotalDays;

(or)

DateTime start = DateTime.Now;

DateTime end = DateTime.Now.AddDays(5);

TimeSpan span = end.Subtract(start);

(or)

DateTime dt1 = Convert.ToDateTime(Textbox1.text);

DateTime dt2 = Convert.ToDateTime(Textbox1.text);

TimeSpan ts = dt2.subtract(dt1);

(or)

<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true"

    CodeFile="Default.aspx.cs" Inherits="_Default" %>

<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">

</asp:Content>

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">

    <asp:Label ID="Label9" runat="server">

    </asp:Label>

    <asp:Label ID="Label10" runat="server">

    </asp:Label><br />

    <br />

    <asp:Label ID="Label1" runat="server">

    </asp:Label><br />

    <asp:Label ID="Label2" runat="server">

    </asp:Label><br />

    <asp:Label ID="Label3" runat="server">

    </asp:Label><br />

    <asp:Label ID="Label4" runat="server">

    </asp:Label><br />

    <asp:Label ID="Label5" runat="server">

    </asp:Label><br />

    <asp:Label ID="Label6" runat="server">

    </asp:Label><br />

    <asp:Label ID="Label7" runat="server">

    </asp:Label><br />

    <asp:Label ID="Label8" runat="server">

    </asp:Label><br />

</asp:Content>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        DateTime startTime = Convert.ToDateTime("12 Aug 2012 12:30 PM");

        DateTime endTime = Convert.ToDateTime("11 Sep 2013 15:30 PM");

        Label9.Text = "StartTime :" + startTime;

        Label10.Text = "EndTime :" + endTime;

        //We subtract the time.

        TimeSpan span = endTime.Subtract(startTime);

        //This will just return the difference selected option

        Label1.Text = "Time Difference (seconds): " + span.Seconds;

         Label2.Text = "Time Difference (minutes): " + span.Minutes;

         Label3.Text = "Time Difference (hours): " + span.Hours ;

         Label4.Text = "Time Difference (days): " + span.Days ;

        //This will return the total difference based on selected options

         Label5.Text = "Total milliseconds: " + Math.Round(span.TotalSeconds, 2).ToString() ;

         Label6.Text = "Total Minutes: " + Math.Round(span.TotalMinutes, 2).ToString() ;

         Label7.Text = "Total hours: " + Math.Round(span.TotalHours, 2).ToString();

         Label8.Text = "Total days: " + Math.Round(span.TotalDays, 2).ToString();

    }

}