FileUpload Example in ASP.NET using C#

In this article we will introduce with FileUpload control in ASP.NET using C#.

FileUpload Example in ASP.NET using C#

The FileUpload control is used to upload file to the server. The FileUpload control has a TextBox and a Browse Button.
When you click on Browse button a popup window will open in which you can select the file and click open.  After that the path of this file will be shown in TextBox. now click on upload button the file will be uploaded in existing location.

FileUpload.aspx (Design page):

FileUpload.aspx (source code):

		<%@
		Page
		Title=""
		Language="C#"
		MasterPageFile="~/RoseindiaMaster.master"
		
		
		AutoEventWireup="true"
		CodeFile="FileUpload.aspx.cs"
		Inherits="FileUpload" 
		%>
		
		<asp:Content
		ID="Content1"
		
		ContentPlaceHolderID="head"
		Runat="Server">
		</asp:Content>
		<asp:Content
		ID="Content2"
		
		ContentPlaceHolderID="ContentPlaceHolder1"
		Runat="Server">
		<div>
		
		<h2
		style="color:Green">FileUpload 
		in ASP.NET 4 , C#</h2>
		
		<asp:FileUpload
		ID="fileupload1"
		runat="server"
		/>
		
		<br
		/>
		
		<br
		/>
		
		<asp:Button
		ID="button1"
		Text="Upload"
		runat="server"
		Width="73px"
		
		onclick="button1_Click"
		/>
		
		<br
		/>
		
		<br
		/>
		
		<asp:Label
		ID="Label1"
		runat="server"
		Font-Bold="True"
		ForeColor="#000099"></asp:Label>
		</div>
		</asp:Content>
		

FileUpload.aspx.cs (C# Code file):

		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
		FileUpload 
		: System.Web.UI.Page
		
		{
		protected
		void 
		Page_Load(object 
		sender, EventArgs 
		e)
		{
		}
		protected
		void 
		button1_Click(object 
		sender, EventArgs 
		e)
		{
		if 
		(fileupload1.HasFile)
		{
		try
		
		{
		if 
		(fileupload1.PostedFile.ContentType == 
		"image/jpeg")
		{
		if 
		(fileupload1.PostedFile.ContentLength < 512000)
		{
		string 
		filename = Path.GetFileName(fileupload1.FileName);
		fileupload1.SaveAs(Server.MapPath("~/") 
		+ filename);
		Label1.Text = 
		"File uploaded successfully!";
		}
		else
		
		Label1.Text = 
		"File maximum size is 500 Kb";
		}
		else
		
		Label1.Text = 
		"Only JPEG files are accepted!";
		}
		catch 
		(Exception 
		exc)
		{
		Label1.Text = 
		"The file could not be uploaded. The following error occured: "
		
		+ exc.Message;
		}
		}
		}
		}
		

Output:

1. The following figure shows how we can browse the file.

2. You can choose appropriate file and click open. The path of the file will be shown in Textbox. You can see in the  following figure.

3. Now click Upload button. You can see the following figure.