/*Seperate Class */

//Delegate for your class to report the progress (this is necessary to pass information between threads)

public Action<int> ReportProgressDelegate { get; set; }


//Method to report the progress using the delegate
private void ReportProgress(int percent)
        {
            if (ReportProgressDelegate != null)
                ReportProgressDelegate(percent);
        }


//Some Loop within Separate Class that contains a counter
//Call the report progress method with a percent value, basically this is where you update your progress in your class
counter++;
double doublecounter = counter;
double numberofruns = ExperimentsToBeRun.Count;
double percent = (doublecounter/numberofruns)*100;
int percenttoreport = (int) percent;
ReportProgress(percenttoreport);


/*Forms App */
//Add a background worker using the Toolbox in form designer: it is under components BackgroundWorker
//Start the background worker in the form constructor

public Form1()
        {
            InitializeComponent();
        //Tell Background worker that it should report progress
            backgroundWorker1.WorkerReportsProgress = true;
        //Subscribe background worker events of progress changed and runworkercompleted to new event handlers
            backgroundWorker1.ProgressChanged += new ProgressChangedEventHandler(backgroundWorker1_ProgressChanged);
            backgroundWorker1.RunWorkerCompleted += new RunWorkerCompletedEventHandler(backgroundWorker1_RunWorkerCompleted);
        }


// Work you want done goes here:
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            //Create an instance of the class you want to do your work for you
            MyClass sp = new Myclass();
        //Pass the delegate from the background worker to your class so that work done in that class will update the progress
        //appropriately if you call the ReportProgress(int percent) method in your class
            sp.ReportProgressDelegate = backgroundWorker1.ReportProgress;
        //Process Data or do whatever
        //sp.ProcessData();
        }

//Hookup your progressbar to the progresschanged event backgroundWorker1.ProgressChanged that we subscribed earlier
void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
        {
            // The progress percentage is a property of e
            progressBar1.Value = e.ProgressPercentage;
        }

//Do things once worker is completed if you want
void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
        {

        }

private void button1_Click(object sender, EventArgs e)
        {
            //Start BackgroundWorker and the backgroundWorker1_doWork section of code will run
            backgroundWorker1.RunWorkerAsync();
        }