我想展示c#应用程序中文件上传的进度

我想在c# windows应用程序中显示文件上传进度，因为我使用在线数据库，需要更多的时间来保存或上传。我使用以下代码。我已经搜索过了，但它并没有显示出准确的百分比明智的进展。我也想改变文件名之前移动到另一个位置。谢谢。

        OpenFileDialog dlg = new OpenFileDialog();
        DialogResult dlgRes = dlg.ShowDialog();

        Application.DoEvents();
        label14.Visible = true;
        if (DialogResult.OK != DialogResult.Cancel)
        {
            foreach (string file in dlg.FileNames)
            {
                try
                {
                    newpath = Path.Combine(textBox2.Text, Path.GetFileName(file)).ToString();
                    filenametemp = "tush" + Path.GetFileName(file).ToString();
                    if (String.IsNullOrEmpty(textBox2.Text))
                    {
                        MessageBox.Show("please select folder to save");
                    }
                    else
                    {
                        File.Copy(file, Path.Combine(textBox2.Text, Path.GetFileName(file)).ToString());

                        if (dlgRes != DialogResult.Cancel)
                        {
                            //Provide file path in txtFilePath text box.
                            txtFilePath.Text = dlg.FileName;
                        }
                        //string folderpath = System.IO.Directory.GetParent(Environment.CurrentDirectory).Parent.FullName + textBox2.Text;
                        //string filePath = textBox2.Text + System.IO.Path.GetFileName(dlg.FileName);
                        //System.IO.File.Copy(dlg.FileName, folderpath, true);
                        try
                        {
                            //Read File Bytes into a byte array
                            byte[] FileData = ReadFile(txtFilePath.Text);
                            //Initialize SQL Server Connection
                            SqlConnection CN = new SqlConnection(ConfigurationManager.ConnectionStrings["Copymanagment"].ConnectionString);
                            //Set insert query
                            string qry = "insert into fileinfo (File_Id,File_Path,date,OriginalPath,Billnumber,Billdate,FileData) values(@FileId,@Filepath,@Date,@OriginalPath,@Billnumber,@Billdate,@FileData)";
                            //Initialize SqlCommand object for insert.
                            SqlCommand SqlCom = new SqlCommand(qry, CN);


                            string path = textBox2.Text;
                            string[] arrpath = null;
                            int count;
                            arrpath = path.Split('''');
                            for (count = 0; count <= arrpath.Length - 1; count++)
                            {
                                // MessageBox.Show(arrpath[count]);
                            }
                            string folder = arrpath[arrpath.Length - 1] + databaseid().ToString();
                            //We are passing Original File Path and File byte data as sql parameters.
                            string fileid = Path.GetDirectoryName(dlg.FileName);
                            SqlCom.Parameters.Add(new SqlParameter("@FileId", (object)folder));
                            SqlCom.Parameters.Add(new SqlParameter("@Filepath", (object)newpath));
                            SqlCom.Parameters.Add(new SqlParameter("@Date", (object)System.DateTime.Now.ToString("dd-MM-yyyy hh:mm:ss tt")));
                            SqlCom.Parameters.Add(new SqlParameter("@OriginalPath", (object)txtFilePath.Text));
                            SqlCom.Parameters.Add(new SqlParameter("@Billnumber", (object)textbillno.Text));
                            SqlCom.Parameters.Add(new SqlParameter("@Billdate", (object)dateTimePicker1.Value.ToString("dd-MM-yyyy")));
                            SqlCom.Parameters.Add(new SqlParameter("@FileData", (object)FileData));
                            //Open connection and execute insert query.
                            CN.Open();
                            SqlCom.ExecuteNonQuery();
                            CN.Close();
                           label14.Visible = false;
                            //Close form and return to list or Files.
                            MessageBox.Show("File saved Succsesfully");
                            txtFilePath.Text = "";
                        }
                        catch (Exception ex)
                        {
                            MessageBox.Show(ex.ToString());
                        }
                    }
                }
                catch
                {
                    MessageBox.Show("File already available");
                }
            }
        }