How to use WinForms progress bar?

by

I would suggest you have a look at BackgroundWorker. If you have a loop that large in your WinForm it will block and your app will look like it has hanged.

Look at BackgroundWorker.ReportProgress() to see how to report progress back to the UI thread.

For example:

private void Calculate(int i)
{
    double pow = Math.Pow(i, i);
}

private void button1_Click(object sender, EventArgs e)
{
    progressBar1.Maximum = 100;
    progressBar1.Step = 1;
    progressBar1.Value = 0;
    backgroundWorker.RunWorkerAsync();
}

private void backgroundWorker_DoWork(object sender, DoWorkEventArgs e)
{
    var backgroundWorker = sender as BackgroundWorker;
    for (int j = 0; j < 100000; j++)
    {
        Calculate(j);
        backgroundWorker.ReportProgress((j * 100) / 100000);
    }
}

private void backgroundWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
    progressBar1.Value = e.ProgressPercentage;
}

private void backgroundWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
    // TODO: do something with final calculation.
}

More Related Contents:

  1. How can we show progress bar for upload with FtpWebRequest
  2. Windows Forms ProgressBar: Easiest way to start/stop marquee?
  3. Running a method in BackGroundWorker and Showing ProgressBar
  4. How do I put text on ProgressBar?
  5. How do I implement a progress bar in C#?
  6. Populating a DataGridView with Text and ProgressBars
  7. Get current folder path
  8. How to bind a List to a ComboBox?
  9. How can I get the PID of the parent process of my application
  10. How to make multi-language app in Winforms?
  11. Trying to use the C# SpellCheck class
  12. What setup code should go in Form Constructors versus Form Load event?
  13. How to access Winform textbox control from another class?
  14. Windows.UI.Notifications is missing
  15. Visual Studio build fails: unable to copy exe-file from obj\debug to bin\debug
  16. How to create a custom MessageBox?
  17. Is it possible to Embed Gecko or Webkit in a Windows Form just like a WebView?
  18. Unable to copy a file from obj\Debug to bin\Debug
  19. How to change the button text for ‘Yes’ and ‘No’ buttons in the MessageBox.Show dialog?
  20. Data binding for TextBox
  21. How do you automatically resize columns in a DataGridView control AND allow the user to resize the columns on that same grid?
  22. Can’t use System.Windows.Forms
  23. How to register Windows Forms with Simple Injector
  24. Run the current application as Single Instance and show the previous instance
  25. How to draw a shape using GraphicsPath to create the Region of a Custom Control?
  26. Hide some properties in PropertyGrid at run-time
  27. How can I detect when Windows 10 enters tablet mode in a Windows Forms application?
  28. How to move focus on next cell in a datagridview on Enter key press event
  29. How to get DPI in C# .NET?
  30. How do I disable the horizontal scrollbar in a Panel

Leave a Comment