c# 线程 WPF 进度百分比（菜鸟）

        #region 线程执行
        /// <summary>
        /// 线程运行，将改变的textblock值实时显示在前台
        /// </summary>
        /// <param name="tb"></param>
        private void Computer(TextBlock tb)
        {
            for (int i = 1; i <= 100; i++)
            {
                Random rd = new Random();
                var num = i;
                this.Dispatcher.BeginInvoke(DispatcherPriority.Normal, (ThreadStart)delegate () { tb.Text = num + "%"; if (tb.Text == "100%") { tb.Text = "完成"; } });
                Thread.Sleep(rd.Next(1, 101));
            }
        }
        #endregion 线程执行_end

        /// <summary>
        /// 点击开始
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Border_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            //将选中的行数据，进度从“0%”--“100%”，然后状态变为完成
            //以上Id开始执行
            DataGridTemplateColumn column = this.datagrid1.Columns[7] as DataGridTemplateColumn;
            foreach (var item in this.datagrid1.Items)
            {
                var element = column.GetCellContent(item);
                if (element != null)
                {
                    TextBlock tb = column.CellTemplate.FindName("Plan", element) as TextBlock;
                    if (bcidL.Where(x => x.Id == Convert.ToInt32(tb.Tag)).Count() > 0)
                    {
                        #region 线程
                        Thread t = new Thread(() => { Computer(tb); });
                        t.Start();
                        #endregion
                    }
                }
            }
        }