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how to count time , if only one day left from db .??

Posted on 2009-05-06
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Last Modified: 2013-11-07
In the below condition , i need to run the time in decreasing order untill the date becomes equal..

5:35:00 left
5:34:30 left

0:29:00 left
       
ElseIf countdate = 1 Then
'                   i need to run the the time , in the decreasing order
'Label1.text =  with time count in decreasing order &"Left "
            End If

currentdate = Date.Now.ToString("MM/dd/yyyy")
            Dim diffdbdate As DateTime = dr.Item("date")
            Dim diffdate As Integer
            diffdate = DateDiff("d", currentdate, diffdbdate)
            Dim countdate As String = Replace(diffdate, "-", "")
            If currentdate > diffdbdate Then
                Label1.text =  countdate & "days Before"
            ElseIf countdate = 1 Then
                   i need to run the the time , in the decreasing order
            End If

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Question by:Rajar Ahmed
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8 Comments
 
LVL 9

Expert Comment

by:Deathrace
ID: 24313645
Timespan helps you to do that... try this..

TimeSpan tsRemaining = EndDate - DateTime.Now;
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LVL 18

Author Comment

by:Rajar Ahmed
ID: 24313841
time count was not decreasing, it actually displayed like this
 1.00:00:00 Left
 
 this is d code , i did...
ElseIf countdate = 1 Then
 Dim tsRemaining As TimeSpan = diffdbdate - currentdate
                 label1.text =tsRemaining.ToString() & "Left"
              End If
<input id="gwProxy" type="hidden"><!--Session data--><input onclick="jsCall();" id="jsProxy" type="hidden">
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LVL 9

Expert Comment

by:Deathrace
ID: 24314002
Basically timespan, if it is executed continously with some set of interval,, you get the effect of decreasing time...if you use AJAX extension , use timer control , and start the timer in

ElseIf countdate = 1 Then
        Timer1.Interval = 1000
         Timer1.Enabled=true
  End If

protected void Timer1_Tick(object sender, EventArgs e)
    {
          Dim tsRemaining As TimeSpan = diffdbdate - currentdate
                label1.text =tsRemaining.ToString() & "Left"
    }

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LVL 18

Author Comment

by:Rajar Ahmed
ID: 24314194
nope , its a complete dotnet application ,
ajax extension cant be used .......:(...
<input id="gwProxy" type="hidden"><!--Session data--><input onclick="jsCall();" id="jsProxy" type="hidden">
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LVL 9

Expert Comment

by:Deathrace
ID: 24314314
, go a head for Javascript function which does this use setTimeout for call the function recursively,
below url shows how to find the Timespan but u need to run the code in using setTimeout method.

How to calculate Timespace ?
http://stackoverflow.com/questions/141136/calculate-timespan-in-javascript

finally call the javascript method from server side....using ClientScirptBlock, here is some idea how can u call a javascript funtion from server side...
http://www.codeguru.com/csharp/.net/net_asp/scripting/article.php/c5337
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LVL 18

Author Comment

by:Rajar Ahmed
ID: 24314994
did u mean this js...it jus calculate the time difference of two dates in millisecond......

hw can it be done as time count ......?



<input id="gwProxy" type="hidden"><!--Session data--><input onclick="jsCall();" id="jsProxy" type="hidden">
<script type="text/javascript">
                function stringToDate(string) {
                        var matches;
                    if (matches = string.match(/^(\d{4,4})-(\d{2,2})-(\d{2,2}) (\d{2,2}):(\d{2,2}):(\d{2,2})$/)) {
                       return new Date(matches[1], matches[2] - 1, matches[3], matches[4], matches[5], matches[6]);
                    } else {
                       return null;
                    };
                }
 
                //Convert duration from milliseconds to 0000:00:00.00 format
                function MillisecondsToDuration(n) {
                        var hms = "";
                        var dtm = new Date();
                        dtm.setTime(n);
                        var h = "000" + Math.floor(n / 3600000);
                        var m = "0" + dtm.getMinutes();
                        var s = "0" + dtm.getSeconds();
                        var cs = "0" + Math.round(dtm.getMilliseconds() / 10);
                        hms = h.substr(h.length-4) + ":" + m.substr(m.length-2) + ":";
                        hms += s.substr(s.length-2) + "." + cs.substr(cs.length-2);
                        return hms;
                }
 
                var beginDate = stringToDate('2008-09-19 07:14:00');
                var endDate = stringToDate('2008-09-19 17:35:00');
 
                var n = endDate.getTime() - beginDate.getTime();
 
                alert(MillisecondsToDuration(n));
        </script>

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Accepted Solution

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Deathrace earned 1500 total points
ID: 24317266
Hi,
Its really hard right...ok i can point to a user control which does everything for us. Add the control to your toolbox, and follow simple instruction to get remaining time.
There is a good sample for better understanding....

Remember: This uses the timespan as we discussed above..i think you can deduce a timespace with two dates.
http://www.codeproject.com/KB/custom-controls/dhtml_timer.aspx
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LVL 18

Author Comment

by:Rajar Ahmed
ID: 24322715
This url did eveything ,

http://www.hashemian.com/tools/javascript-countdown.htm
<input id="gwProxy" type="hidden"><!--Session data--><input onclick="jsCall();" id="jsProxy" type="hidden">

Thx for ur suggestions....
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