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Upload multiple files in Asp.Net file upload control

In this post, we will discuss how we can upload multiple files in Asp.Net file upload control.

Also, you can check out my previous posts:

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To upload multiple photos using File Upload control we need to add multiple=” true” attribute to the file upload control.

Even if the property did not come in visual studio intellisense, you write this property it will not give any error. (For me it did not give any error so hoping it will not give any error for you also)

Below is the full code:

<asp:FileUpload ID=”FileUpload1″ runat=”server” multiple=”true” Width=”330px” /><br />
<asp:Button ID=”btnUpload” runat=”server” Text=”Click to Upload” OnClick=”btnUpload_Click” />

.CS code:

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Web;
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)

protected void btnUpload_Click(object sender, EventArgs e)
HttpFileCollection fileCollection = Request.Files;
for (int i = 0; i < fileCollection.Count; i++)
HttpPostedFile uploadfile = fileCollection[i];

string fileName = Path.GetFileName(uploadfile.FileName);

if (uploadfile.ContentLength > 0)
uploadfile.SaveAs(Server.MapPath(“~/Photos/”) + fileName);

Here if you want to validate image file extensions, then you can follow this article.

Check the fig below, when you will select multiple files it usually selects like below:

Once you upload the images will be shown.

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About Bijay Kumar

I am Bijay from Odisha, India. Currently working in my own venture TSInfo Technologies in Bangalore, India. I am Microsoft Office Servers and Services (SharePoint) MVP (5 times). I works in SharePoint 2016/2013/2010, SharePoint Online Office 365 etc. Check out My MVP Profile.. I also run popular SharePoint web site

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