The FileUpload control enables you to upload files to the server. It displays a text box control and a browse button that allows users to select a file to upload to the server.
Properties
- FileBytes
- FileContent
- Filename
- SaveAs
- PostedFile
The FileUpload control provides the HttpPostedFile class. Its has the following properties.
- ContentLength
- ContentType
- Filename
- InputStream
- SaveAs
Example
The following shows how to upload a single file.
<b>Upload File:</b>
<asp:FileUpload ID="FileUpload1" runat="server" />
The following shows how to upload multiple files.
<b>Upload Multiple File:</b>
<asp:FileUpload ID="fileuplaod1" runat="server" AllowMultiple="true" Font-Bold="true" />
We need to set AllowMultiple="true".
Example
The following shows how to upload multiple files from various folders.
DifferentFile.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="differntfolder.aspx.cs" Inherits="differntfolder" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div align="center">
<table border="1">
<tr>
<th>Multiple File Upload</th>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td>
<asp:FileUpload ID="fileuplaod1" runat="server" AllowMultiple="true" Font-Bold="true" />
</td>
</tr>
<tr>
<td>
<asp:Button ID="button1" runat="server" Text="upload" OnClick="button1_Click" Width="82px" />
</td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td>
<asp:Label ID="label1" runat="server" ForeColor="Green" Font-Size="Large" Font-Bold="true"></asp:Label><br />
</td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td>
<asp:Label ID="labbel2" runat="server" Font-Bold="true" ForeColor="Red" Font-Size="Large"></asp:Label><br />
</td>
</tr>
<tr>
<td>
<asp:Label ID="label3" runat="server" Font-Bold="true" ForeColor="Black" Font-Size="Large"></asp:Label>
</td>
</tr>
</table>
</div>
</form>
</body>
</html>
Code File DifferentFile.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
public partial class differntfolder : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void button1_Click(object sender, EventArgs e)
{
label1.Text = "<b>uploaded file</b><br/>";
labbel2.Text = "<b>not uploaded file</b><br/>";
label1.Visible = true;
try
{
// Check File Present or not
if (fileuplaod1.HasFiles)
{
int filecount = 0;
int fileuploadcount = 0;
// Check No of Files Selected
filecount = fileuplaod1.PostedFiles.Count();
if (filecount <= 10)
{
foreach (HttpPostedFile postfiles in fileuplaod1.PostedFiles)
{
// Get The File Extension
string filetype = Path.GetExtension(postfiles.FileName);
if (filetype.ToLower() == ".docx" || filetype.ToLower() == ".pdf" || filetype.ToLower() == ".txt" || filetype.ToLower() == ".doc")
{
// Get The File Size In Bite
double filesize = postfiles.ContentLength;
if (filesize < (1048576))
{
fileuploadcount++;
string serverfolder = string.Empty;
string serverpath = string.Empty;
// Adding File Into Specific Folder Depend On his Extension
switch (filetype)
{
case ".doc":
case ".docx":
serverfolder = Server.MapPath(@"uplaodfiles\document\");
// Check Folder available or not
if (!Directory.Exists(serverfolder))
{
// Create Folder
Directory.CreateDirectory(serverfolder);
}
serverpath = serverfolder + Path.GetFileName(postfiles.FileName);
fileuplaod1.SaveAs(serverpath);
label1.Text += "[" + postfiles.FileName + "]- document file uploaded successfully<br/>";
break;
case ".pdf":
serverfolder = Server.MapPath(@"uplaodfiles\pdf\");
// Check Folder available or not
if (!Directory.Exists(serverfolder))
{
// Create Folder
Directory.CreateDirectory(serverfolder);
}
serverpath = serverfolder + Path.GetFileName(postfiles.FileName);
fileuplaod1.SaveAs(serverpath);
label1.Text += "[" + postfiles.FileName + "]- pdf file uploaded successfully<br/>";
break;
case ".txt":
serverfolder = Server.MapPath(@"uplaodfiles\text_document\");
// Check Folder available or not
if (!Directory.Exists(serverfolder))
{
// Create Folder
Directory.CreateDirectory(serverfolder);
}
serverpath = serverfolder + Path.GetFileName(postfiles.FileName);
fileuplaod1.SaveAs(serverpath);
label1.Text += "[" + postfiles.FileName + "]- text_document file uploaded successfully<br/>";
break;
}
}
else
{
labbel2.Text += "[" + postfiles.FileName + "]- files not uploaded size is greater than (1)MB.<br/>Your File Size is(" + (filesize / (1024 * 1024)) + ") MB </br>";
}
}
else
{
labbel2.Text += "[" + postfiles.FileName + "]- file type must be .doc or .pdf or .txt<br/>";
}
}
}
else
{
label1.Visible = false;
labbel2.Text = "You selected (" + filecount + ") files <br/>";
labbel2.Text += "Please select a maximum of ten (10) files!!!";
}
label3.Visible = true;
label3.Text = "Total File = (" + filecount + ")<br/> Uploaded file = (" + fileuploadcount + ")<br/> Not Uploaded = (" + (filecount - fileuploadcount) + ")";
}
else
{
label1.Visible = false;
label3.Visible = false;
labbel2.Text = "<b>Please select the file for upload!!!</b></br>";
}
}
catch (Exception ex)
{
labbel2.Text = ex.Message;
}
}
}
Output
- If you are selecting more than 5 files.
![Upload]()
- If the file is not selected.
![Selected]()
- After uploading multiple files.
![Multiple files]()
- After uploading files.
![Uploading files]()