Report background worker

public partial class Form1 : Form
{
    private BackgroundWorker backgroundWorker1;
    private testClass t1 = new testClass();

    public Form1()
    {
        InitializeComponent();

        // subscribe to your event
        t1.OnProgressUpdate += t1_OnProgressUpdate;
    }

    private void t1_OnProgressUpdate(int value)
    {
        // Its another thread so invoke back to UI thread
        base.Invoke((Action)delegate
        {
            label1.Text += Convert.ToString(value);
        });
    }

    private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
    {
        t1.changevalue(1000);
    }

    private void button1_Click_1(object sender, EventArgs e)
    {
        backgroundWorker1.RunWorkerAsync();
    }

}

class testClass
{
    public delegate void ProgressUpdate(int value);
    public event ProgressUpdate OnProgressUpdate;

    private int val;
    public int changevalue(int i)
    {
        for (int j = 0; j < 1000; j++)
        {
            val += i + j;

            // Fire the event
            if (OnProgressUpdate != null)
            {
                OnProgressUpdate(i);
            }
        }
        return val;
    }
}

Source: stackoverflow.com

Similar codes

5 votes120 views5 answers
Integer arraylist to int array
C#
0 vote143 views1 answer
C# get random between 0 and 1
C#
0 vote160 views1 answer
Unity predicts rigidbody position in x seconds
C#Unity
5 votes130 views3 answers
Return view mvc
C#
1 vote206 views1 answer
How to run c# code in visual studio code terminal
C#
0 vote119 views1 answer
Listview thread error
C#
98 votes223 views6 answers
Convert string to number C#
C#
1 vote159 views1 answer
Rotation facing mouse unity
C#Unity
0 vote117 views1 answer
Deleting an item from a vector c#
C#
-1 vote138 views1 answer
How get data from json in c#
C#