This article will show you how to calculate relative time like 2 hours ago in c#.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="TimeDisplay.aspx.cs" Inherits="TimeDisplay" %>
<!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 id="Head1" runat="server">
<title>Untitled Page</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:BoundField DataField="Id" HeaderText="Id" />
<asp:TemplateField HeaderText="LastActivityDate" SortExpression="LastActivityDate">
<ItemTemplate>
<asp:Label ID="lblDate" runat="Server" Text='<%#formatDate(Eval("DateTime").ToString()) %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</form>
</body>
</html>
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class TimeDisplay : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
if (Session["dtTemp"] != null)
{
GridView1.DataSource = Session["dtTemp"] as DataTable;
GridView1.DataBind();
}
else
{
GridView1.DataSource = GetCustomMadeDataTable();
this.DataBind();
}
}
}
public DataTable GetCustomMadeDataTable()
{
//Create a new DataTable object
System.Data.DataTable objDataTable = new System.Data.DataTable();
//Create three columns with string as their type
objDataTable.Columns.Add("Id", typeof(string));
objDataTable.Columns.Add("DateTime", typeof(DateTime));
DataRow dr;
//Adding some data in the rows of this DataTable
for (int i = 0; i <= 10; i++)
{
dr = objDataTable.NewRow();
dr[0] = i.ToString();
dr[1] = DateTime.Now.ToShortDateString();
objDataTable.Rows.Add(dr);
}
DataColumn[] dcPk = new DataColumn[1];
dcPk[0] = objDataTable.Columns["Id"];
objDataTable.PrimaryKey = dcPk;
Session["dtTemp"] = objDataTable;
return objDataTable;
}
public object formatDate(object dt1)
{
DateTime dt = Convert.ToDateTime(dt1); string fdate = "";
Int32 days = DateTime.Now.Day - dt.Day; Int32 hours = DateTime.Now.Hour - dt.Hour; if (days == 0)
{
if (hours == 1)
{
fdate = hours + " hour ago.";
}
else
{
fdate = hours + " hours ago.";
}
}
else if (days == 1)
{
if (hours == 1)
{
fdate = days + " day, " + hours + " hour ago.";
}
else
{
fdate = days + " day, " + hours + " hours ago.";
}
}
else if (days > 1)
{
if (hours == 1)
{
fdate = days + " days, " + hours + " hour ago.";
}
else
{
fdate = days + " days, " + hours + " hours ago.";
}
}
return fdate;
}
}