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Editorial Team
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Asked: 2026-05-27T05:54:43+00:00

i have default.aspx page and one user control. usercontrol is having following code for

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i have default.aspx page and one user control.
usercontrol is having following code for multiple file uploads.
now the problem is when i add a file for upload that current context file is not giving me any value it is still zero i guess because it is rendering from user control.

what should i do?

My Usercontrol UPLOAD.ASCX

<%@ Control Language="C#" AutoEventWireup="true" CodeFile="FileUpload.ascx.cs" Inherits="FileUpload" %>
<script type="text/javascript" src="_scripts/jquery-1.4.1.min.js"></script>    
<script type="text/javascript">
    var i = 1;
    $(document).ready(function () {
        $("#addfile").click(function () {
            $("#dvfiles").append("<input name=" + i + "fu type=file /><a href=#>remove</a><br>");
            i++;
        });

        $("#dvfiles a").live('click', function () {
            $(this).prev("input[type=file]").remove();
            $(this).remove();
        });
    });

    $(document).submit(function () {
        var flag = true;
        $("#dvfiles input[type=file]").each(function () {
            if ($(this).val() == "") {
                $(this).css("background", "Red");
                flag = false;
            }
        });
        return flag;
    });        
</script>

<div id="Fileuploader">
<a href="#" id="addfile">Attach a file..</a><br />
<asp:Label ID="lblMessage" runat="server"></asp:Label><br />
<asp:Button ID="btnUpload" runat="server" Text="Upload"
    onclick="btnUpload_Click" />
</div>

UPLOAD.ASCX.CS

protected void btnUpload_Click(object sender, EventArgs e)
{
    try
    {
        HttpFileCollection filecolln = Request.Files; 
        //here i don't get values of current files.
      // this is zero. because of this following if condition failed 
       //please help here
        if (filecolln.Count > 0)
        {
            for (int i = 0; i < filecolln.Count; i++)
            {
                HttpPostedFile file = filecolln[i];
                if (file.ContentLength > 0)
                {
                    file.SaveAs(ConfigurationManager.AppSettings["FilePath"] + System.IO.Path.GetFileName(file.FileName));
                }
            }
            lblMessage.Text = "Uploaded Successfully!";
        }
        else
        {
            lblMessage.Text = "No files selected!";
        }

    }
    catch (Exception ex)
    {
        lblMessage.Text = ex.Message;
    }
}

Default.aspx code

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"    
    Inherits="_Default" %>
    <%@ Register TagPrefix="ucFileuploader" tagName="Fileuploader" src="FileUpload.ascx"    %> 

   <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org /TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <ucFileuploader:Fileuploader ID="Fileuploder" runat="server" />
    </div>
    </form>
</body>
</html>
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1 Answer

  1. Editorial Team

    The problem is that you are using javascript an id names.

    so when you have control with id addfile in .aspx it is rendered as is,
    but when you have control with id addfile in user control with id Fileuploader,
    than the rendered id is Fileuploader_addfile,
    so change id name in java script with the proper id.

    To chechk what is name of rendered id, open page in browser, open source of the page and find you element and copy id into java script.
    Change all ids in java script with rendered id names.

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