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copied!<p>You need to use AJAX for this. </p> <p>Here is the simplest possible example that will work but this is only to get you started. I oversimplified this for the demonstration purposes and it’s not really high quality.</p> <p><strong>Javascript code</strong></p> <p>Much better way to send data is through POST because GET is limited to around 2000 characters. </p> <p>Also, better way to format your data points would be through JSON. What I’ve shown below is not the best practice really ;)</p> <pre><code><script type="text/javascript"> var xmlHttpRequest; function PostData() { //create XMLHttpRequest object xmlHttpRequest = (window.XMLHttpRequest) ? new XMLHttpRequest() : new ActiveXObject("Msxml2.XMLHTTP"); //If the browser doesn't support Ajax, exit now if (xmlHttpRequest == null) return; //Prepare your data points so they are in the format X1-Y1-X2-Y2-X3-Y3 pointData = "21-12-51-23-54-125-154-315-245-21" //Initiate the XMLHttpRequest object xmlHttpRequest.open("GET", "http://foo.com/Page.aspx?Points=" + pointData, true); //Send the Ajax request to the server with the GET data xmlHttpRequest.send(null); } </script> C# code on the server protected void Page_Load(object sender, EventArgs e) { if (Request.QueryString["Points"] != null) { string rawData = Request.QueryString["Points"]; string []points = rawData.Split(new string[] { "-" }, StringSplitOptions.None); //continue parsing these to Ints and more... } } </code></pre> <p>Here are couple tutorials and resources that will help you to polish this up some more</p> <p><a href="http://www.codeproject.com/Articles/31155/Ajax-Tutorial-for-Beginners-Part-1" rel="nofollow noreferrer">http://www.codeproject.com/Articles/31155/Ajax-Tutorial-for-Beginners-Part-1</a></p> <p><a href="https://stackoverflow.com/questions/1102941/asp-net-ajax-examples-for-the-beginner">ASP .NET Ajax examples for the beginner</a></p>

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