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Tuesday, 5 August 2014

C# Conversion of DateTime to 24 Hours Time in Asp.Net | Display 24 Hour Time In DropDownList In Asp.net

8/05/2014 - By Pranav Singh 0

This article will show you how you can generate the list of 24 hour date time collection using c#.net and display the detail into dropdown list.


So for his article first we will create a new asp.net application and add a dropdown list into it. After adding dropdown list your .aspx page will look as shown below.

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="24hrtime.aspx.cs" Inherits="ProjectDemo_Asp.et._24hrtime" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>C# Conversion of DateTime to 24 Hours Time in Asp.Net</title>
</head>
<body>
    <form id="form1" runat="server">
    24 Hours Time :<asp:DropDownList ID="DropDownList1" runat="server">
    </asp:DropDownList>
    <div>
   
    </div>
    </form>
</body>
</html>

Now check the code for getting 24 hour time and making collection.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace ProjectDemo_Asp.et
{
    public partial class _24hrtime : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            BindTimeToDDL();
        }
        public void BindTimeToDDL()
        {
            List<string> time24hr = new List<string>();
            DateTime myDate = DateTime.ParseExact("2009-05-08 00:00", "yyyy-MM-dd HH:mm", System.Globalization.CultureInfo.InvariantCulture);
            for (int i = 0; i < 24; i++)
            {
                string strtime = FormatearHoraA24(myDate.AddHours(i));
                time24hr.Add(strtime);
            }
            DropDownList1.DataSource = time24hr.ToList();
            DropDownList1.DataBind();
        }
        public static string FormatearHoraA24(DateTime fechaHora)
        {
            return fechaHora.ToString("HH:mm");
        }
    }
}

In above code I am passing a dummy date with 00:00:00 time and retrieving time from the incremented time by hour.



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