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

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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

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6条回答

一整个雨季

2021-01-07 02:55

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

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青春惊慌失措

2021-01-07 03:03

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;
    }

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醉话见心

2021-01-07 03:05

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;

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时光取名叫无心

2021-01-07 03:08

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;

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借酒劲吻你

2021-01-07 03:13
'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
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孤街浪徒

2021-01-07 03:17

I have done this by using following way:

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

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

Then, I am getting browser timezone by this :

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

 });

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");
}

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);

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