// Fixes the slow progress bar update.

public static void UpdateProgressBar(ProgressBar progressBar, int value)

{

    bool maxUpdated = false;

​

    if(value + 1 > progressBar.Maximum)

    {

      progressBar.Maximum++;

      maxUpdated = true;

    }

​

    progressBar.Value = value + 1;

    progressBar.Value--;

​

    if(maxUpdated) progressBar.Maximum--;

}