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Convert Div Content To Image Using JavaScript in ASP.NET(C#).

INDEX.ASPX

 <html>
<head runat="server">
<title></title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script type="text/javascript" src="http://cdn.rawgit.com/niklasvh/html2canvas/master/dist/html2canvas.min.js"></script>
<script type="text/javascript">
function ConvertToImage(btnExport)
{
    debugger;
    html2canvas($("#dvTable")[0]).then(function(canvas)
    {
        debugger;
        var base64 = canvas.toDataURL();
        $("[id*=hfImageData]").val(base64);
        debugger;
        __doPostBack(btnExport.name, "");

    });
    return false;
}
</script>
</head>
<body>
<form id="form1" runat="server">
<asp:HiddenField ID="hfImageData" runat="server" ClientIDMode="Static" />
<div id="dvTable" runat="server">
    <p>Nikhil</p>
</div>
<asp:Button ID="btnExport" Text="Export to Image" runat="server" UseSubmitBehavior="false" OnClick="ExportToImage" OnClientClick="return ConvertToImage(this)" />
</form>
</body>
</html>

INDEX.ASPX.CS

using System;  
using System.Collections.Generic;  
using System.Linq;  
using System.Web;  
using System.Web.UI;  
using System.Web.UI.WebControls;  
using System.Data;  
using System.IO;  
using System.Text;  
namespace FACETS
{
public partial class Invoice : System.Web.UI.Page
{

   protected void ExportToImage(object sender, EventArgs e)  
   {  
    string base64 = Request.Form[hfImageData.UniqueID].Split(',')[1];  
    byte[] bytes = Convert.FromBase64String(base64);  
    Response.Clear();  
    Response.ContentType = "image/png";  
    Response.AddHeader("Content-Disposition", "attachment; filename=HTML.png");  
    Response.Buffer = true;  
    Response.Cache.SetCacheability(HttpCacheability.NoCache);  
    Response.BinaryWrite(bytes);  
    MemoryStream storeStream = new MemoryStream();  
    MemoryStream ms = new MemoryStream(bytes);  
    //write to file  
    FileStream file = new FileStream(Server.MapPath("~/Images/") + "HTML100.png", FileMode.Create, 
    FileAccess.Write);  
    ms.WriteTo(file);  
    file.Close();  
    ms.Close();  
    Response.End();  
   }  
}
}
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Location: Surat, Gujarat, India

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