File Upload and Download using Asp.net
Question
I am trying to use file upload control to upload and then download file using Asp.net C#, But it is giving me a Directory not found exception. Can anybody help me with this, where I am making the mistake?
Here is my .aspx file:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="fileuploadcheck.aspx.cs" Inherits="fileuploadcheck" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<table style="padding: 20px;">
<tr>
<td>
<asp:Label ID="lblFilename" runat="server" Text="Browse:"></asp:Label>
</td>
<td>
<asp:FileUpload ID="fileUpload1" runat="server" />
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<asp:LinkButton ID="OnLnkUpload" runat="server" OnClick="OnLnkUpload_Click" Font-Underline="False">Upload</asp:LinkButton>
</td>
<td>
<asp:LinkButton ID="OnLnkDownload" runat="server" OnClick="OnLnkDownload_Click" Font-Underline="False">Download</asp:LinkButton>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
Here is my Code Behind File:
using System;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.IO;
public partial class fileuploadcheck : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
/// To save/upload files in folder and download files from folder in asp.net
/// </summary>
string filename = string.Empty;
protected void btnUpload_Click(object sender, EventArgs e)
{
}
protected void OnLnkUpload_Click(object sender, EventArgs e)
{
filename = Path.GetFileName(fileUpload1.PostedFile.FileName);
fileUpload1.SaveAs(Server.MapPath("Files/" + filename));
Response.Write("File uploaded sucessfully.");
lblFilename.Text = "Files/" + fileUpload1.FileName;
}
// To download uplaoded file
protected void OnLnkDownload_Click(object sender, EventArgs e)
{
if (lblFilename.Text != string.Empty)
{
if (lblFilename.Text.EndsWith(".txt"))
{
Response.ContentType = "application/txt";
}
else if (lblFilename.Text.EndsWith(".pdf"))
{
Response.ContentType = "application/pdf";
}
else if (lblFilename.Text.EndsWith(".docx"))
{
Response.ContentType = "application/docx";
}
else
{
Response.ContentType = "image/jpg";
}
string filePath = lblFilename.Text;
Response.AddHeader("Content-Disposition", "attachment;filename=\"" + filePath + "\"");
Response.TransmitFile(Server.MapPath(filePath));
Response.End();
}
}
}
3 answers
solution1
2 2015-07-01 08:03:04
Use This
protected void OnLnkUpload_Click(object sender, EventArgs e)
{
filename = Path.GetFileName(fileUpload1.PostedFile.FileName);
fileUpload1.SaveAs(Server.MapPath("~/Files/" + filename));
Response.Write("File uploaded sucessfully.");
lblFilename.Text = "Files/" + fileUpload1.FileName;
}
Make sure your drive had permission for read/write ...
solution2
1 2014-05-22 18:39:24
Server.MapPath("Files/" + filename) is mapping a Virtual Directory "Files" located in the executing path of your application (typically the "bin" folder where the compiled DLL for your web application resides) to a physical path. Ensure the following:
You have a "Files" Virtual Directory in your "bin" folder; if the path is meant to be elsewhere, for instance, off the root of your application, change it in your code:
Server.MapPath("/Files/" + filename)Make sure the user that your web server (IIS?) is running under has sufficient rights to the physical path that corresponds to the virtual directory. Typically, this is the "IIS_IUSRS" group. That user will need Create / Write / Modify permissions to the corresponding physical path.
solution3
0 2015-07-01 08:12:49
Well you can try this :
fileUpload1.SaveAs(Server.MapPath("~/Files" + filename));
And
lblFilename.Text = "~/Files" + fileUpload1.FileName;
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