How To Make A Downloader In C#

Making your own downloader (simple download) would sound hard and maybe boring but actually it's not , it's very easy to make a downloader in c# . Today i will tell you how to write downloader in c# in the easiest way by the way this is just a simple one .

First of all create a new project then add two buttons, two text boxes, two labels & at last add a progressbar now change the properties of your tools as given below

Button1 - Text : Download
Button2 - Text : Save
Label1 - Text : Direct Link(Optional)
Label2 - Text : Save File(Optional)
Textbox1 - To Put The Download Link
Textbox2 - To Show The Save Directory

Arrange the tools to make your form look like this

Now we'll start coding , First go ahead and add the namespace using System.Net; then go to button1(Download) click_event and code these

 if (textBox2.Text == String.Empty)//having a if statement to make the program more comfort
            {
                MessageBox.Show("Please select a destination to save the file");
            }
            else
            {
                WebClient Download_Client = new WebClient();//Declaring the webclient as Download_Client
                Download_Client.DownloadFileCompleted += new AsyncCompletedEventHandler(Completed);//the event handler
                Download_Client.DownloadProgressChanged += new DownloadProgressChangedEventHandler(ProgressChanged);// " "
                Download_Client.DownloadFileAsync(new Uri(textBox1.Text.Trim().ToString()), textBox2.Text.Trim());// " "
            }

Then go to ProgressChanged event and add this bit of code(Mind the handler)

   private void ProgressChanged(object sender, DownloadProgressChangedEventArgs e)
        {
 MessageBox.Show("Downloading Successful " , "Download_Completed" ,MessageBoxButtons.OK ,MessageBoxIcon.Information);//just a messagebox           
            progressBar1.Value = (0);//resetting the progressbar
            textBox1.Text = "";//restting the textbox
            textBox2.Text = "";// " "
        }

Now the AsyncCompleted Event

  private void Completed(object sender, AsyncCompletedEventArgs e)
        {
            MessageBox.Show("Downloading Successful " , "Download_Completed" ,MessageBoxButtons.OK ,MessageBoxIcon.Information);//just a messagebox           
        }

Now at last open the button2_click event(Save) and code these

  FolderBrowserDialog Save = new FolderBrowserDialog();//Declaring the folder browsing dialog
            Save.RootFolder = Environment.SpecialFolder.Desktop;//" "
            if (Save.ShowDialog() == DialogResult.OK)//An if statement to to show the path in textbox
            {
                textBox2.Text = Save.SelectedPath;
            }
            string Text = textBox1.Text.ToString();//formatting to string
            string[] arry = Text.Split('/');//splitting /
            for (int i = 0; i < Int32.Parse(arry.Length.ToString()); i++)//a for loop here
            {
                if (i == Int32.Parse(arry.Length.ToString()) - 1)
                {
                    textBox2.Text += "\\" + arry[i].ToString();
                }
             }

Here is the full codes

//Author : Mohamed Shimran
        //Blog : http://ultimateprogrammingtutorials.blogspot.com
        private void button1_Click(object sender, EventArgs e)
        {
            if (textBox2.Text == String.Empty)//having a if statement to make the program more comfort
            {
                MessageBox.Show("Please selet a destination to save the file");
            }
            else
            {
                WebClient Download_Client = new WebClient();//Declaring the webclient as Download_Client
                Download_Client.DownloadFileCompleted += new AsyncCompletedEventHandler(Completed);//the event handler
                Download_Client.DownloadProgressChanged += new DownloadProgressChangedEventHandler(ProgressChanged);// " "
                Download_Client.DownloadFileAsync(new Uri(textBox1.Text.Trim().ToString()), textBox2.Text.Trim());// " "
            }
        }
        private void ProgressChanged(object sender, DownloadProgressChangedEventArgs e)
        {
            progressBar1.Value = e.ProgressPercentage;//setting the progressbar value as downloadprogress
        }
        private void Completed(object sender, AsyncCompletedEventArgs e)
        {
            MessageBox.Show("Downloading Successful " , "Download_Completed" ,MessageBoxButtons.OK ,MessageBoxIcon.Information);//just a messagebox           
            progressBar1.Value = (0);//resetting the progressbar
            textBox1.Text = "";//resetting the textbox
            textBox2.Text = "";// " "
        }

        private void button2_Click(object sender, EventArgs e)
        {       
            FolderBrowserDialog Save = new FolderBrowserDialog();//Declaring the folder browsing dialog
            Save.RootFolder = Environment.SpecialFolder.Desktop;//setting to desktop
            if (Save.ShowDialog() == DialogResult.OK)//An if statement to to show the path in textbox
            {
                textBox2.Text = Save.SelectedPath;
            }
            string Text = textBox1.Text.ToString();//formatting to string
            string[] arry = Text.Split('/');//splitting /
            for (int i = 0; i < Int32.Parse(arry.Length.ToString()); i++)//a for loop here
            {
                if (i == Int32.Parse(arry.Length.ToString()) - 1)
                {
                    textBox2.Text += "\\" + arry[i].ToString();
                }
             }
        }

Let's test the application by the way you can only download from direct links .

Test the program on your own , I hope this is useful .