JS+WCF实现进度条实时监测数据加载量的方法详解

@* 数据准备进度条 *@
  <div id="container">
    <div class="content">
      <h2>数据准备</h2>
    </div>
    <!-- Progress bar -->
    <div id="progress_bar" class="ui-progress-bar ui-container">
      <div class="ui-progress" >
        <span class="ui-label" >完成量<b class="value">3%</b></span>
      </div>
    </div>
    <!-- /Progress bar -->
    <div class="content" id="main_content" >
      <p>数据准备完成！</p>
    </div>
  </div>

$(function () {
    $('#initialization').click(function () {
      $.messager.confirm('提示', '是否要进行数据初始化？', function (r) {
        if (!r) {
          return;
        }
        else {
          $('#container').show();
          var t1 = window.setInterval(process_bar, 1500);
        }
      });
    });
});
function process_bar() {
    $.ajax({
      type: "POST",
      async: true,
      url: "/Paper/LoadData",
      success: function (result) {
        $('#progress_bar .ui-progress').animateProgress(result);
        if (result =="100") {
          $('#main_content').slideDown();
          $('#fork_me').fadeIn();
          setTimeout(function () { $('#container').hide();; }, 1500);
          window.clearInterval(t1);
        }
      }
    })
}

static bool flag = true;
public int LoadData()
{
  int result = Ipaperbll.LoadDataAmount();
  if (flag)
  {
    Thread thread = new Thread(new ThreadStart(ThreadLoadData));
    thread.Start();
    flag = false;
  }
  return result;
}
private void ThreadLoadData()
{
  Ipaperbll.initializeData();
}

static int load_data_amount;//当前数据准备量
public bool initializeData()
{
  bool flag = false;  //定义返回值
  //获得数据
  //code....code ....code....
  load_data_amount = 5;//完成工作量
  int page = 0;
  int amount = 50000;//一次获取数据量不能超过10万
  while (page * amount == list.Count)
  {
    //code....code ....code....
    load_data_amount = load_data_amount + 5;
  }
  load_data_amount = 50;//读取数据默认的工作量
  double totalamount = list.Count();
  foreach (var item in list)
  {
    //code....code ....code....
    load_data_amount = Convert.ToInt32((1 - (totalamount--) / double.Parse(list.Count().ToString())) * 50) + 50;//根据数据改变的完成工作量
  }
  load_data_amount = 100;//完成工作量
  flag = true;
  return flag;
}
//返回当前准备数据量
public int LoadDataAmount() {
  return load_data_amount;
}