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C#  , javascript and FileUpload Asp.net

Posted on 2014-03-04
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Last Modified: 2014-03-21
I have a FileUpload Control on a webpage.  

On a button I have a OnClientClick that execute
a JavaScript that let the user enter e-mail adresses to send some mail to.
than it calls an WebMethod that sends the e-mail and then update the
database with some information.

I need to do the actual fileupload (to the database)  inside the webmethod
so I wounder how I can get access to the fileupload
from my webmethod?




 


My webmethod today:

[WebMethod(EnableSession = true)]
public static string SendMail(string id, string emails, string comments)
    {
        User u;
        u = (User)HttpContext.Current.Session["UserInfo"];
        if (emails.EndsWith(";"))
            emails = emails.Substring(0, emails.Length - 1);
       

        int res = MailManager.Send(int.Parse(id), u, comments, emails);
        return res.ToString();
    }
0
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Question by:pucko73
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1 Comment
 
LVL 82

Accepted Solution

by:
leakim971 earned 2000 total points
ID: 39905316
Using a generic handler :
public class Handler : IHttpHandler {
    
    public void ProcessRequest (HttpContext context) {
        User u;
        u = (User)HttpContext.Current.Session["UserInfo"];

        string id = context.Request.QueryString.Get("id");
        string emails = context.Request.QueryString.Get("emails");
        string comments = context.Request.QueryString.Get("comments");

        if (emails.EndsWith(";"))
        {
            emails = emails.Substring(0, emails.Length - 1);
        }

//http://msdn.microsoft.com/en-us/library/system.web.httppostedfile.saveas(v=vs.110).aspx
        HttpPostedFile attachment = context.Request.Files[0];
        //string filename = "C:\\Temp\\" + attachment.FileName;
        //attachment.SaveAs(filename);

        int res = MailManager.Send(int.Parse(id), u, comments, emails, attachment);

        context.Response.ContentType = "text/plain";
        context.Response.Write(res.ToString());
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    } 

}

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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <title></title>
    <script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
    <script type="text/javascript" src="http://cdnjs.cloudflare.com/ajax/libs/jquery.form/3.49/jquery.form.js"></script>
    <script type="text/javascript">
        jQuery(function ($) {

            var success = function (data) {
                alert(data);
            }

            $("#<%= form1.ClientID %>").ajaxForm({ url: "Handler.ashx", success: success });

        });
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:HiddenField Value="123AZE" runat="server" ID="id" />
        <br />
        <asp:TextBox Text="leakim971@ee.com,pucko73@ee.com" ID="emails" runat="server"></asp:TextBox>
        <br />
        <asp:TextBox Text="My comment" runat="server" ID="comments" TextMode="MultiLine"></asp:TextBox>
        <br />
        <asp:FileUpload ID="attachment" runat="server"></asp:FileUpload>
        <br />
        <asp:Button Text="SEND" ID="send" runat="server"></asp:Button>
    </div>
    </form>
</body>
</html>

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