how to upload a file using handler in asp.net?

See more:

ASP.NET

jQuery

handler

hi everyone..
i have to upload a file through handler...at that same time i should additionally
insert the drop down value..but while hit the breakpoint in handler file,code is not running..
i have written the following code

asp.net code:
<asp:DropDownList ID="ddlproduct" runat="server">
        <asp:ListItem>select</asp:ListItem>
            <asp:ListItem>product1</asp:ListItem>
            <asp:ListItem>product2</asp:ListItem>
            <asp:ListItem>product3</asp:ListItem>
        </asp:DropDownList>
<asp:FileUpload ID="FileUpload1" runat="server" AllowMultiple="true" />
<asp:Button ID="Button1" runat="server" Text="submit" /></td>





jquery code:
<script type="text/javascript">
    $("document").ready(function () {
        $("#Button1").click(function () {
            var ddls = $("#ddlproduct option:selected").text();
            var fileUpload = $("#FileUpload1").get(0);
            var files = fileUpload.files;

            var data = new FormData();
            for (var i = 0; i < files.length; i++) {
                data.append(files[i].name, files[i]);
            }




//ajax code to send the file to handler
 $.ajax({
                url: "Handler.ashx",
                type: "post",
                data: {
                    action: insert,
                    ddl: ddls,
                    Data: data

                },
                contentType: "application/json; charset=utf-8",
                dataType: "json",
                success: function (response) {
                    alert(response.d);
                },
                failure: function (response) {
                    alert("failure");
                }

            });

        });
        return false;
    });





here is the handler code:

public class Handler : IHttpHandler {

    public void ProcessRequest (HttpContext context) {

          string action = context.Request["action"].ToString().Trim();
          if (action == "insert")
        {

            if (context.Request.Files.Count == 1)
                {

                    HttpPostedFile file = context.Request.Files[0];
                    file.SaveAs(context.Server.MapPath(file.FileName));
                    //context.Response.Write("File uploaded");
                }


            string ddlp = HttpUtility.HtmlEncode(context.Request["ddl"].ToString().Trim());

        ......sql queries etc



        }
    }


    public bool IsReusable {
        get {
            return false;
        }
    }

but i am facing two problems...
1.)while doing this,output page is loading(the page should not get loaded,because i am using handler method)
2.)while hit the breakpoint in handler file,the run flow is not going to handler file


anyone pls help me..
thanks in advance..