在执行SQL查询时显示进度条

我想在从SQL数据库读取数据时通知用户我决定创建一个带有进度条的表单，但它不起作用-也许是因为需要一个线程。我想以编程方式创建表单

        ProgressBar pb = new ProgressBar();
        pb.MarqueeAnimationSpeed = 30;
        pb.Style = ProgressBarStyle.Marquee;
        pb.Dock = DockStyle.Fill;
        progressForm.ClientSize = new Size(200, 50);
        progressForm.FormBorderStyle = FormBorderStyle.FixedDialog;
        progressForm.StartPosition = FormStartPosition.CenterScreen;
        progressForm.Controls.Add(pb);
        progressForm.ControlBox = false;
        progressForm.TopMost = true;
        progressForm.Show();  
        //do data processes here (all queries and executes)
        progressForm.close();

我如何修改上面的代码来实现我的既定目标?

编辑:顺便说一句，我想在我的项目中的每个数据功能中使用这个进度条表单。例如:fillGrid, runQuery..

@Will非常感谢你的回答。我的意思是我如何使用类的函数例如，我的gridFill函数在连接类中:

 class ConnectionClass
    {
       public static SqlConnection connection = new SqlConnection();
    public string sorgu;
    public static string server;
    public static string userId;
    public static string catalog;
    public static string password;
    public static string accessMethod;
    public DataSet ds = new DataSet();
    Form progressForm = new Form();       
    public bool Open()
    {
        try
        {
            if (connection.State != ConnectionState.Open)
            {
                connection.ConnectionString = "Data Source = " + server + ";" +
                                              "Initial Catalog=" + catalog + ";" +
                                              "User ID=" + userId + ";" +
                                              "Password=" + password + ";" +
                                              "Connect Timeout=0";
                connection.Open();
                return true;
            }
            else
            {
                return true;
            }

        }
        catch (Exception ex)
        {
            MessageBox.Show("System message:" + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
            return false;
        }
    }
    public DataTable Dt(string query)
    {
        DataTable dt = new DataTable();
        if (Open())
        {
            SqlDataAdapter da = new SqlDataAdapter(query, connection);
            try
            {   
                //progressForm.Showdialog()  is this possible???
                da.Fill(dt);
                //progressForm.close(); ??
            }
            catch (Exception ex)
            {
                MessageBox.Show("Sistem Mesajı:" + ex.Message, "Hata", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }         
        return dt;
    }
    public bool Run(string query, string hataMsj)
    {
        Form activeForm = Form.ActiveForm;
        query = " SET DATEFORMAT DMY " + query;
        SqlCommand sc = new SqlCommand(query, connection);
        try
        {
            Open();
            sc.ExecuteNonQuery();
            return true;
        }           
        catch (Exception )
        {
            return false;
        }
    }
    public void fillComboBox(string sorgu, ComboBox cb, string text, string value)
    {
        DataTable dt = Dt(sorgu);
        cb.DisplayMember = text;
        cb.ValueMember = value;
        cb.DataSource = dt;
        if (cb.Items.Count > 0)
        {
            cb.SelectedIndex = 0;
        }
    }
    public int fillGridView(string sorgu, DataGridView dgv)
    {
        DataTable dtGrvw = Dt(sorgu);
        dgv.DataSource = dtGrvw;
        return 1;
    }       
    }

和来自另一个表单(类)的示例查询

   ConnectionClass cc = new ConnectionClass();
    query= "  INSERT INTO tblPersonel (" +
                                          " [sqlUserName] " +
                                          ",[personelNo] " +
                                          ",[ad] " +
                                          ",[soyad] " +
                                          ",[departmanId] " +
                                          ",[emailadres] " +
                                          ",[tcKimlikNo],[kangurubu],[dokumaciNo])VALUES" +
                                          "('" + tbSqlUserName.Text +
                                          "','" + tbPersonelNo.Text +
                                          "','" + tbAd.Text +
                                          "','" + tbSoyad.Text +
                                          "','" + cbDepartman.SelectedValue.ToString() +
                                          "','" + tbMail.Text +
                                          "','" + tbKimlikno.Text + 
                                          "','" + tbKangrubu.Text + 
                                          "','" + tbDokumaciNo.Text + "' ) ";
                    if (cc.Run(query, "Unexpected error on insert new person"))
                    {
                        fillGrid();
                        this.Close();
                    }
    public void fillGrid()
    {
        query= " select * from View_Personel order by personelNo desc";
        cc.fillGridView(query, gridviewPersonel);
    }

，我无法想象我如何在bw_DoWork事件中使用它。因为函数有参数。(查询，gridview)当我从另一个类调用它时，我可以使用它的参数…

注。这个方法对我来说很好，但是没有用。我不明白这个问题

     Form progressForm;
     public void func() {
        BackgroundWorker bw = new BackgroundWorker ();
        bw.DoWork += new DoWorkEventHandler (bw_DoWork);
        bw.RunWorkerCompleted += new RunWorkerCompletedEventHandler (bw_RunWorkerCompleted);
        progressForm = new Form ();
        ProgressBar pb = new ProgressBar ();
        pb.MarqueeAnimationSpeed = 30;
        pb.Style = ProgressBarStyle.Marquee;
        pb.Dock = DockStyle.Fill;
        progressForm.ClientSize = new Size (200, 50);
        progressForm.FormBorderStyle = FormBorderStyle.FixedDialog;
        progressForm.StartPosition = FormStartPosition.CenterScreen;
        progressForm.Controls.Add (pb);
        progressForm.ControlBox = false;
        progressForm.TopMost = true;
        progressForm.Show ();
        string queryString = "SELECT ...."; // fill query string here
        var params = new KeyValuePair<GridControl, string>(sorgu, queryString);
        bw.RunWorkerAsync (params);
    }
    void bw_DoWork (object sender, DoWorkEventArgs e) {
        KeyValuePair<GridControl, string> params = e.Argument as KeyValuePair<GridControl, string>;
        ConnectionClass cc = new Connection Class();
        cc.fillGrid(params.Value, params.Key);
    }
    void bw_RunWorkerCompleted (object sender, RunWorkerCompletedEventArgs e) {
        progressForm.Close (); //
    }