How to Download File and Showing its Progress in Progress Bar

Introduction

Some time when you download a file from the internet using webclient we need to show progress bar to the user indicating how much task is accomplished. This can be very difficult and cumbersome when using Webclient.DownloadFile() method because it freeze the interface and we need to do extra coding by thread to show progress bar.

Here I am going to show you how to do that task very simply.

Technologies : .NET 2.0/3.5
Language : C#
Prerequisite :

Implementation

Lets get started, fist of all let setup the GUI like below:

Take a label, Text Box, Progress bar and a Button.



Now in code first of all define the namespace we are going to use

using System.IO;
using System.Net;

Now on the Click Event of the Button write code like below

private void btnDownload_Click(object sender, EventArgs e)
{
WebClient wc = new WebClient();
wc.DownloadProgressChanged += new DownloadProgressChangedEventHandler(wc_DownloadProgressChanged);
wc.DownloadFileAsync(new Uri(textBox1.Text.Trim()), @"c:\Users\Kirtan\Desktop\" + "Downloaded." + Path.GetExtension(textBox1.Text));
}