CODEWITHSUNDEEP
c#asp.netjquery
Azhar Mansuri
Azhar Mansuri

Reputation: 705

How to get client current date and time in asp.net?

I have a hidden field in my master page. And I set the current date and time as a value in that "hiddenfield" using Javascript. I am unable to get this hidden field value in any other page's page load method.

Here is my code.

HiddenField hdnCurrentDate = (HiddenField)this.Master.FindControl("hdnCurrentDate");
                ClientScript.RegisterClientScriptBlock(this.GetType(), "Message", "var CurrentDate = new Date(); $('#" + hdnCurrentDate.ClientID + "').val(CurrentDate);alert($('#ctl00_hdnCurrentDate').val());", true);

I have defined Hiddenfield in master page like

<asp:HiddenField ID="hdnCurrentDate" runat="server" />

I got the alert of "hdnCurrentDate" is undefined. This is because I wrote the code in page load in not post back method.

Here is the other way what I have implemented.

I have used ConvertTimeBySystemTimeZoneId in code behind. Here is the code for the same.

DateTime ClientDateTime = DateTime.Now;
        DateTime _localTime = TimeZoneInfo.ConvertTimeBySystemTimeZoneId(ClientDateTime, "Arab Standard Time");
        return _localTime;

I didn't get destination time zone ID instead of "Arab standard Time". If I will get it, my problem will be solved.

Is there any other way to get the current date time in any of my page. I don't want to use Session and cookies.

Thanks in advance.

Upvotes: 2

Views: 41695

Answers (7)

Mohamed Samy
Mohamed Samy

Reputation: 11

If you are using ASP.Net MVC use the following code

create a class "GetTime". and in this class you will find "Egypt Standard Time" you can pick your standard time zone from this list here

public class GetTime{
        public static DateTime GetCurrentTime()
        {
            DateTime serverTime = DateTime.Now;
            DateTime _localTime = TimeZoneInfo.ConvertTimeBySystemTimeZoneId(serverTime, TimeZoneInfo.Local.Id, "Egypt Standard Time");
            return _localTime;
        }
    }

and in Global.asax add the line in the "Application_Start()"

GetTime.GetCurrentTime();

Then when you need to get the time you may write your code like this

var localTime = GetTime.GetCurrentTime();
var mytimeVarialbe = localTime.Hour;

and don't forget to import the class

 using yourproject.Folderthatcontainclass

Upvotes: 1

Trương Long
Trương Long

Reputation: 110

How about use CulturalInfo From C# to get it?

string currentFormat = CultureInfo.CurrentCulture.DateTimeFormat.ShortDatePattern;

this will return "dd/MM/yy" or "dd/M/YYY" any format in client

Upvotes: 0

Shreya
Shreya

Reputation: 204

Below is the javascript function to get client current datetime:

<script type="text/javascript">
function GetDate(date) {
    CurTime = new Date(date);
    var offset = (new Date().getTimezoneOffset() / 60) * (-1);
    var utc = CurTime.getTime() + (offset * 60000 * (-1));
    var serverDate = new Date(utc + (3600000 * offset));
    var dateString = (serverDate.getMonth() + 1) + "/" + serverDate.getDate() + "/" +     
serverDate.getFullYear() + " " + serverDate.toLocaleTimeString("en-US", { hour12: true });
}
</script>

You can also get OffSet Time from code behind as below:

public static TimeSpan GetOffSetTime(string date)
    {
        DateTime d = Convert.ToDateTime(date);
        TimeZone zone = TimeZone.CurrentTimeZone;
        TimeSpan local = zone.GetUtcOffset(d);
        return local;
    }

Upvotes: 3

Amarnath Balasubramanian
Amarnath Balasubramanian

Reputation: 9460

modified code from This link:

<script type="text/javascript">
function getDateTime()
{
    var localTime = new Date();
    var year= localTime.getYear();
    var month= localTime.getMonth() +1;
    var date = localTime.getDate();
    var hours = localTime .getHours();
    var minutes = localTime .getMinutes();
    var seconds = localTime .getSeconds();    
    //at this point you can do with your results whatever you please
}
</script>

At this point i would concatenate all of the fields together and put them in an asp:HiddenField control so they can be read on the server. On the server, call Convert.ToDateTime() on the Text value of your HiddenField.

if you don't use a masterpage you should try this.

HiddenField hdnFieldValue = (HiddenField)PreviousPage.FindControl("hdnField");

Updated:

Put a hidden field on the page. 

<asp:HiddenField ID="hidChild" runat="server"/>

in your javascript function 

 var childHidden = document.getElementById('<%hidChild.ClientID%>');
 childHidden.value = window.opener.document.getElementById('text1').value;

Now access this hidden control on the page load event.

Response.Write(hidChild.Value); or Session["ParentVal"]=hidChild.Value;

Upvotes: 0

Mohammad Arshad Alam
Mohammad Arshad Alam

Reputation: 9862

I have done this by using following way:

  1. I have taken a HiddenField into the previous page where it requires :

    <asp:HiddenField ID="hdnTimeOffset" ClientIDMode="Static" runat="server" 
 Value="" />

  2. Then, I am getting browser timezone by this : 

    $(document).ready(function () {
     var offset = new Date().getTimezoneOffset();
     $('#hdnTimeOffset').val(offset);

 });

  3. I am getting time zone into a Session variable of the previous page, before redirecting to the next page, like on button click:

    protected void btn_Click(object sender, EventArgs e)
{
    Session["TimeOffset"] = hdnTimeOffset.Value;
    Response.Redirect("~/Root/abc.aspx");
}

  4. In the Main Page, I get the current time by using following code :

    DateTime dtmCurrentDateTime = DateTime.Now.ToUniversalTime();
double dblMinutes =Convert.ToDouble(Session["TimeOffset"].ToString());                
dtmCurrentDateTime = dtmCurrentDateTime.AddMinutes(-dblMinutes);

Upvotes: 2

sreejithsdev
sreejithsdev

Reputation: 1210

Master Page

set servertime

<asp:hiddenfield runat="server" id="HiddenField1"></asp:hiddenfield>

protected void Page_Load(object sender, EventArgs e)
{
    HiddenField1.Value = DateTime.Now.ToString();
}

set client machine time

 <script type="text/javascript">
        function setvalue() {
            document.getElementById('HiddenField1').value = new Date();
        }
    </script>
   <body onload="setvalue();">
    <form id="form1" runat="server">
    <div>
        <asp:HiddenField ID="HiddenField1" runat="server"/>
    </div>
    </form>
    </body>

Content Page

HiddenField hdnvalue = this.Master.Master.FindControl("HiddenField1") as HiddenField;
string currenttime=hdnvalue.Value;

Upvotes: 0

sajanyamaha
sajanyamaha

Reputation: 3198

'Is there any other way to get the current date time in any of my page. I don't want to use Session and cookies.' In that case you can use JavaScript

Also, you don't need to use RegisterStartupScript. You can just call the GetDate() function in the onLoad event.

<script type="text/javascript">

    window.onload = function(){
        getDate();
    };

    function GetDate() 
    {
        var dt = new Date();
        var element = document.getElementById("MainContent_FormView1_Label1");

        element.text = dt.toDateString();
    }
</script>

However, you might want to read this SO thread for best practice in using window.onload, or consider using a framework such as jQuery and its document.ready

Upvotes: 0

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