Can I Get Javascripts Values In Asp.Net Code

Question

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hi
i have this scripts for maps and i want to take the value of latude and longitued in code behind so can i get it?

JavaScript

<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?key=AIzaSyC6v5-2uaq_wusHDktM9ILcqIrlPtnZgEk&sensor=false">
</script>

<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false&libraries=places">
</script>

<script type="text/javascript">
    if (navigator.geolocation) {
        navigator.geolocation.getCurrentPosition(success);
    } else {
        alert("Geo Location is not supported on your current browser!");
    }
    function success(position) {
        var lat = position.coords.latitude;
        var long = position.coords.longitude;
        var city = position.coords.locality;
        var myLatlng = new google.maps.LatLng(lat, long);
        var myOptions = {
            center: myLatlng,
            zoom: 12,
            mapTypeId: google.maps.MapTypeId.ROADMAP
        };
        var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
        var marker = new google.maps.Marker({
            position: myLatlng,
            title: "lat: " + lat + " long: " + long
        });

        marker.setMap(map);
        var infowindow = new google.maps.InfoWindow({ content: "<font color="black">User Address<br /> Latitude:" + lat + "<br /> Longitude:" + long + "" });
        infowindow.open(map, marker);
    }
</script></font>

Posted 1-Jan-14 21:35pm

Member 10020808

Updated 1-Jan-14 21:43pm

Kornfeld Eliyahu Peter

v2

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3 solutions

Solution 1

Easiest way would be to set the longitude and latitude values in HiddenFields through javascript and then retrieve it through Codebehind code.

Posted 1-Jan-14 22:19pm

JoCodes

Updated 1-Jan-14 22:20pm

v2

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Peter Leow · Accepted Answer · 2014-01-01T23:43:00

Let see an example to pass a value from javascript from one page to another page:
1. In the first aspx page, say Page1.aspx, add:

XML

<asp:HiddenField ID="HiddenField1" runat="server" />
<asp:Button ID="Button1" runat="server"  OnClientClick="passValue2CodeBehind();" Text="Button" onclick="Button1_Click" />

2. In the code behind of the first aspx page, register a javascript in the Page_Load event:

ClientScript.RegisterStartupScript(this.GetType(), "myscript", "<script language='javascript'>function passValue2CodeBehind() {  var lat='1.2345'; document.getElementById('HiddenField1').value = lat; }  </script>");

3. Add this line to the Button1_Click in the code behind:

Response.Redirect("~/Page2.aspx?lat=" + HiddenField1.Value);

4. Create the Page2.aspx and add a label:

<asp:Label ID="Label1" runat="server"></asp:Label>

5. In the Page_Load event of the code behind of Page2.aspx, add this:

Label1.Text = this.Request.QueryString["lat"];

Now, launch Page1.aspx to see the working.

Member 10020808 · Accepted Answer · 2014-01-02T09:33:00

Solution 3

i solve it but with dynamic data
this script document.getElementById('HiddenField1').value = lat;
can not get the inter data it give string to find inter data i find another solution

Posted 2-Jan-14 9:33am