C# Background worker - report progress with List<Employee>

[Mou_inn]

see my code


public partial class Form1 : Form
{
BackgroundWorker m_oWorker;

public Form1()
{
InitializeComponent();

m_oWorker = new BackgroundWorker();

// Create a background worker thread that ReportsProgress &
// SupportsCancellation
// Hook up the appropriate events.
m_oWorker.DoWork += new DoWorkEventHandler(m_oWorker_DoWork);
m_oWorker.ProgressChanged += new ProgressChangedEventHandler
(m_oWorker_ProgressChanged);
m_oWorker.RunWorkerCompleted += new RunWorkerCompletedEventHandler
(m_oWorker_RunWorkerCompleted);
m_oWorker.WorkerReportsProgress = true;
m_oWorker.WorkerSupportsCancellation = true;

}

private void button1_Click(object sender, EventArgs e)
{
m_oWorker.RunWorkerAsync();
}

List<Employee> oEmp = new List<Employee>();

void m_oWorker_DoWork(object sender, DoWorkEventArgs e)
{
// The sender is the BackgroundWorker object we need it to
// report progress and check for cancellation.
//NOTE : Never play with the UI thread here...
for (int i = 0; i < 100; i++)
{
Thread.Sleep(100);

// Periodically report progress to the main thread so that it can
// update the UI. In most cases youll just need to send an
// integer that will update a ProgressBar

oEmp.Add(new Employee(1, "Dipak"));
m_oWorker.ReportProgress(i, new object[] { oEmp });
// Periodically check if a cancellation request is pending.
// If the user clicks cancel the line
// m_AsyncWorker.CancelAsync(); if ran above. This
// sets the CancellationPending to true.
// You must check this flag in here and react to it.
// We react to it by setting e.Cancel to true and leaving
if (m_oWorker.CancellationPending)
{
// Set the e.Cancel flag so that the WorkerCompleted event
// knows that the process was cancelled.
e.Cancel = true;
m_oWorker.ReportProgress(0);
return;
}
}

//Report 100% completion on operation completed
m_oWorker.ReportProgress(100);
}

void m_oWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
List<Employee> oEmp = (List<Employee>)e.UserState;
lblStatus.Text = "Processing......" + e.ProgressPercentage.ToString() + "%";
}

void m_oWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
// The background process is complete. We need to inspect
// our response to see if an error occurred, a cancel was
// requested or if we completed successfully.
if (e.Cancelled)
{
lblStatus.Text = "Task Cancelled.";
}

// Check to see if an error occurred in the background process.

else if (e.Error != null)
{
lblStatus.Text = "Error while performing background operation.";
}
else
{
// Everything completed normally.
lblStatus.Text = "Task Completed...";
}
}
}

public class Employee
{
int ID = 0;
string Name = "";

public Employee()
{

}

public Employee(int ID, string Name)
{
this.ID = ID;
this.Name = Name;
}
}

i am passing custom data to ProgressChanged event like m_oWorker.ReportProgress(i, new object[] { oEmp });

please show me how to read back it from ProgressChanged event.

i tried this but fail.

void m_oWorker_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
List<Employee> oEmp = (List<Employee>)e.UserState;
lblStatus.Text = "Processing......" + e.ProgressPercentage.ToString() + "%";
}
thanks

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