set time

erum mirza

i have this code

 
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="test1.aspx.vb" Inherits="gfln1.test1" %>
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>title>
head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js">script> 
<script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.0/jquery-ui.min.js">script> 
<link href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/themes/base/ui.all.css" rel="stylesheet" type="text/css" /> 
<script src="http://projectcodegen.com/jquery.ui.datetimepicker.js" type="text/javascript">script> 
head> 
<script type="text/javascript"> 
$(function() {
$('#TextBox1').datetimepicker();
$('#TextBox2').datetimepicker();

}); 
script> 
<body>
<form id="form1" runat="server">
<div>

Enter Start Date/Time<asp:TextBox ID="TextBox1" runat="server">asp:TextBox> 
Enter End Date/Time<asp:TextBox ID="TextBox2" runat="server">asp:TextBox>
Enter Conference days<asp:TextBox ID="TextBox3" runat="server">asp:TextBox>
<br />
<asp:Button ID="Button1" runat="server" Text="Calculate Hours For businees" />

div>
form>
body>
html>

i want that if i click on button it gives me time differnce b/w just two time not date time
for example

if textbox1 contain "12/24/2010 07:11 PM"
and textbox2 contain "12/25/2010 08:11 AM"

and i want to calcaute just difference in hr b/w two time ,not datetime then i have
t1 = Convert.ToDateTime(Me.TextBox1.Text).ToLongTimeString()
t2 = Convert.ToDateTime(Me.TextBox2.Text).ToLongTimeString()

Dim tsdiff As TimeSpan = t2.Subtract(t1)

it should give 13 hours but right now its giving me -11 hours , can any oen help me

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Sam Hobbs15y ago

This is the VB version.

Dim st1 As String = "12/24/2010 07:11 PM"
Dim st2 As String = "12/25/2010 08:11 AM"

Dim t1 As DateTime = Convert.ToDateTime(st1)
Dim t2 As DateTime = Convert.ToDateTime(st2)

Dim tsdiff As TimeSpan = t2.Subtract(t1)

erum mirza15y ago
well nair thanks for ur so help ,but let me tell u shortly whole scanerio .my problem is that i have to calculate businees hours for conference .

for example conference go for 2 days say 25 dec and 26 dec ,now for time it should be 12 hours daily on both days ,for example time may be 5:00pm to 5 :am means 12 hours
that means conference will go 12 hours daily ,i need to so this
I hope u got my oint

Suthish Nair15y ago

If you want to find exact time from a datetime then you need to use Date also.

Dim startTime As DateTime, endTime As DateTime
startTime = Convert.ToDateTime("12/24/2010 07:11 PM")
endTime = Convert.ToDateTime("12/25/2010 08:11 AM")
Dim timeDiff = New TimeSpan(endTime.Ticks - startTime.Ticks)
'timeDiff.Hours

erum mirza15y ago
ok ,fine
Sam Hobbs15y ago
You should use C#. When I try to convert your VB code to C# it won't let me call DateTime.Subtract since t2 is a string.

Don't call ToLongTimeString and make t1 and t2 DateTime objects instead of string objects. Note that I would post my code that I tested and that works the way you expect it to but my code is in C#.