In this article I will explain with an example, how to upload multiple files using FileUpload Control in ASP.Net 4.5 using C# and VB.Net.
This article makes use of ASP.Net version 4.5.
 
 

HTML Markup

The following HTML Markup consists of:
FileUpload – For selecting file.

Properties:

AllowMultiple – It allows user to select multiple files.
Button – For uploading selected file.
The Button has been assigned with an OnClick event handler.
Label – For displaying message.
<asp:FileUpload ID="fuUpload" runat="server" AllowMultiple="true" />
<asp:Button ID="btnUpload" Text="Upload" runat="server" OnClick="OnUpload" />
<hr />
<asp:Label ID="lblMessage" runat="server" ForeColor="Green"></asp:Label>
 
 

Namespaces

You will need to import the following namespace.
C#
using System.IO;
 
VB.Net
Imports System.IO
 
 

Uploading multiple files using FileUpload Control

When the Upload Button is clicked, first a check is performed whether the Folder (Directory) exists or not if it does not then, the Folder (Directory) is created.
Then, a FOREACH loop is executed over the FileUpload PostedFiles property which holds the uploaded files.
Inside the loop, the names of the files are extracted and then the files are stored in Folder (Directory).
Finally, the message is displayed using the Label control.
C#
protected void OnUpload(object sender, EventArgs e)
{
    string folderPath = Server.MapPath("~/Files/");
 
    //Check whether Directory (Folder) exists.
    if (!Directory.Exists(folderPath))
    {
        //If Directory (Folder) does not exists. Create it.
        Directory.CreateDirectory(folderPath);
    }
 
    foreach (HttpPostedFile postedFile in fuUpload.PostedFiles)
    {
        //Save the File to the Directory (Folder).
        postedFile.SaveAs(folderPath + Path.GetFileName(postedFile.FileName));
    }
 
    //Display the success message.
    lblMessage.Text = string.Format("{0} files have been uploaded successfully.", fuUpload.PostedFiles.Count);
}
 
VB.Net
Protected Sub OnUpload(ByVal sender As Object, ByVal e As EventArgs)
    Dim folderPath As String = Server.MapPath("~/Files/")
 
    'Check whether Directory (Folder) exists.
    If Not Directory.Exists(folderPath) Then
        'If Directory (Folder) does not exists. Create it.
        Directory.CreateDirectory(folderPath)
    End If
 
    For Each postedFile As HttpPostedFile In fuUpload.PostedFiles
        'Save the File to the Directory (Folder).
        postedFile.SaveAs(folderPath & Path.GetFileName(postedFile.FileName))
    Next
 
    'Display the success message.
    lblMessage.Text = String.Format("{0} files have been uploaded successfully.", fuUpload.PostedFiles.Count)
End Sub
 
 

Screenshot

ASP.Net 4.5: Uploading Multiple Files using FileUpload Control
 
 

Browser Compatibility

The above code has been tested in the following browsers only in versions that support HTML5.
Microsoft Edge  FireFox  Chrome  Safari  Opera
* All browser logos displayed above are property of their respective owners.
 
 

Downloads

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