How can I show correctly a progressbar and a label (that show the percentige) for filling multiple datasets?

Hi All,

I need to update a dataGridView that has master-detail part, I use this control for filling the grid and it childs (I use 4 datasets).

Question: How can I add correctly a thread or more that will add to the grid these datasets and show the correct percentage and the UI remain usable?
 
Please provide me some code.

Thanks advanced,
Steve

Here is my code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;


namespace MasterDetail
{
    public partial class frmMain : Form
    {
        public frmMain()
        {
            InitializeComponent();
        }

        MasterControl masterDetail;

        private void frmMain_Load(object sender, EventArgs e)
        {
            //label1.Text = DateTime.Now.ToString();
            clearFields();
            loadData();
            //label2.Text = DateTime.Now.ToString();
        }
        void clearFields()
        {
            panelView.Controls.Clear();
            masterDetail = null;
            Refresh();
            masterDetail = new MasterControl(nwindDataSet);
            panelView.Controls.Add(masterDetail);
        }

        internal delegate void SetDataSourceDelegate();
        private void setDataSource()
        {
            if (this.masterDetail.InvokeRequired)
            {
                this.masterDetail.BeginInvoke(new SetDataSourceDelegate(setDataSource));
            }
            else
            {
                createMasterDetailView();
            }
        }
        void loadData()
        {
            System.Threading.Thread thread =
                       new System.Threading.Thread(new System.Threading.ThreadStart(delegate() { loadDataThread(); }));
            thread.Start();
        }
        void loadDataThread() 
        {
            
            orderReportsTableAdapter.Fill(nwindDataSet.OrderReports);
            invoicesTableAdapter.Fill(nwindDataSet.Invoices);
            employeesTableAdapter.Fill(nwindDataSet.Employees);
            customersTableAdapter.Fill(nwindDataSet.Customers);

            setDataSource();

        }

        void createMasterDetailView() 
        {

            masterDetail.setParentSource(nwindDataSet.Customers.TableName, "CustomerID");
            masterDetail.childView.Add(nwindDataSet.OrderReports.TableName, "Orders");
            masterDetail.childView.Add(nwindDataSet.Invoices.TableName, "Invoices");
            masterDetail.childView.Add(nwindDataSet.Employees.TableName, "Employees");

            typeof(DataGridView).InvokeMember("DoubleBuffered", System.Reflection.BindingFlags.NonPublic |
  System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.SetProperty, null,
  masterDetail, new object[] { true });

            foreach (DataGridView dvg in masterDetail.childView.childGrid)
            {
                typeof(DataGridView).InvokeMember("DoubleBuffered", System.Reflection.BindingFlags.NonPublic |
System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.SetProperty, null,
dvg, new object[] { true });
            }
            masterDetail.childView.childGrid[2].RowTemplate.Height = 100;
        }
        private void btnLoad_Click(object sender, EventArgs e)
        {

        }

        private void btnLoad_Click_1(object sender, EventArgs e)
        {
            Application.Exit();
        }
    }
}

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