Introduction
Some time when download a file from the internet using webclient we need to show progressbar to the user indecating how much task is accomlished . this can be very difficult and cumbersome when using WebClient.DownloadFil() method because it freez the interface and we need to do extra coding by thread to show progressbar
Here i m going to tell you how to do that task very simply .
Technologies:
.net 2.0/3.5
Language:
C#
Prerequisite
1. .NET Framework 3.5/2.0
2. Visual Studio 2008/2005
Implementation
Lets Get Started ,
Fist of all let Setup the interface like below
take a label , Text Box , Progressbar and a Button .
Now in Code First of all define the namespace we are going to use
{codecitation class="brush: csharp; gutter: true;" width="650px"}
using System.IO;
using System.Net;
{/codecitation}
Now on the Click Event of the Button
Write code like below
{codecitation class="brush: csharp; gutter: true;" width="650px"}
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));
}
{/codecitation}
Here We take one WebClient Object and Simply Call Download DownloadFileAsync() method and pass Two Parameters "Url of File to Download " and "Location at we want to save the Downloaded File"
Now main part comes that we want to show progressbar increment when downloading file
Declare Event handler
{codecitation class="brush: csharp; gutter: true;" width="650px"}
wc.DownloadProgressChanged += new DownloadProgressChangedEventHandler(wc_DownloadProgressChanged);
{/codecitation} and define Declared Event like below {codecitation class="brush: csharp; gutter: true;" width="650px"}
public void wc_DownloadProgressChanged(Object sender, DownloadProgressChangedEventArgs e)
{
pbDownloadStatus.Value = e.ProgressPercentage;
}
{/codecitation}
What it does Assign the e.ProgressPercentage to the progressbar having MAximum Value 100.
Thats it .
Conclusion
Article Explaines about How to Download File and Showing its Progress in Progressbar .
Download Project Files
Thank you . | About the Author |
 |
| Kirtan Patel | - Bachelor of Computer Application .
- File Handling with C#
- Registry Programming With C#.
- Knowledge of Virus Programming .
- Working With third party controls like Telerik and Component Factory .
- P/invoke Win32 API.
- SQL Server Database Applications
- Client/Server Database Programming
Expertise in : C# , Asp.net ,Vb.net , SQL Server , Designing Elegant look Web interface
Familiar With : C/C++ , Core Java , Java Script , Dream weaver templates , fire Works ,PHP ,Photo shop
and Graphics
Databases: Microsoft SQL Server 2005 , Microsoft Access and Some MySQL
Occupation: Student |
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