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Editorial Team
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Asked: 2026-05-13T14:41:44+00:00

I need to provide a way for the user to specify a path to

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I need to provide a way for the user to specify a path to a file on his machine on my intranet web application, and the ASP:FileUpload control provides a nice dialog to do that, however it also transfers the contents of the file over. Since I only need the file path and not the contents, is there another way to achieve this?

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1 Answer

  1. Editorial Team

    UPDATE : The code below will return the full file path in IE, but for security reasons, firefox and chrome only give you the file name. This might be a bit of a problem 🙂

    I took the liberty of implementing the solution given by RaYell. Here’s the code:

    Default.aspx (markup):

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

<!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>
    <script type="text/javascript">
        function submitFormWithoutFile() {
            var fileUpload = document.getElementById('<%= this.FileUpload1.ClientID %>');
            var filePath = document.getElementById('<%= this.FilePath.ClientID %>');
            filePath.value = fileUpload.value;
            fileUpload.parentNode.removeChild(fileUpload);
        }
    </script>
</head>
<body>

    <form id="form1" runat="server">
        <asp:HiddenField ID="FilePath" runat="server" />
        <asp:FileUpload ID="FileUpload1" runat="server" />

        <asp:Button ID="Button1" runat="server" Text="Do it!" OnClientClick="submitFormWithoutFile();" />
    </form>
</body>
</html>

    Default.aspx.cs (code-behind)

    namespace SO
{
    using System;
    using System.Web.UI;
    using System.Web.UI.WebControls;

    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            if (Page.IsPostBack)
            {
                // we have our file name but not the file
                this.form1.Controls.Add(new Literal() { Text = this.FilePath.Value });
                System.Diagnostics.Debug.Assert(this.FileUpload1.PostedFile == null);
            }
        }
    }
}
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