Asp.net 執行匯入進度

顯示匯入或上傳的進度，想必是許多 asp.net 開發人員一定會遇到的問題。
以下是我的解法。

為了讓 progress bar 能跑，當然需要 jQuery.
而 JQuery Progress Bar 1.1 已經幫我們寫好了，我們只需要使用即可。

再來，為了讓網頁能立刻反應當下的進度，需要使用 ASP.NET Ajax 的 AJAX 之 PageMethod 功能。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Script.Services;
using System.Web.Services;
using System.Threading;

namespace WebApplication1
{
  public partial class _Default : System.Web.UI.Page
  {
    private static SlowTask slowTask = null;

    protected void Page_Load(object sender, EventArgs e)
    {

    }

    [ScriptMethod]
    [WebMethod]
    public static Progress GetTaskCurrentProgress()
    {
      int ii = Thread.CurrentThread.ManagedThreadId;
      return new Progress
      {
        CurrentCount = slowTask.CurrentCount,
        TotalCount = slowTask.TotalCount,
        Message =       string.Format("{0}/{1} : {2}", slowTask.CurrentCount, slowTask.TotalCount, 
        slowTask.GetAsyncTaskProgress())
      };
    }

    public struct Progress
    {
      public string Message;
      public int TotalCount;
      public int CurrentCount;
    }

    

    [ScriptMethod]
    [WebMethod]
    public static void RunItSync()
    {
      int ii = Thread.CurrentThread.ManagedThreadId;
      slowTask = new SlowTask(1000);
      slowTask.ExecuteAsyncTask();
    }
  }
}

Code behinds

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Script.Services;
using System.Web.Services;
using System.Threading;

namespace WebApplication1
{
  public partial class _Default : System.Web.UI.Page
  {
    private static SlowTask slowTask = null;

    protected void Page_Load(object sender, EventArgs e)
    {

    }

    [ScriptMethod]
    [WebMethod]
    public static Progress GetTaskCurrentProgress()
    {
      int ii = Thread.CurrentThread.ManagedThreadId;
      return new Progress
      {
        CurrentCount = slowTask.CurrentCount,
        TotalCount = slowTask.TotalCount,
        Message =       string.Format("{0}/{1} : {2}", slowTask.CurrentCount, slowTask.TotalCount, 
        slowTask.GetAsyncTaskProgress())
      };
    }

    public struct Progress
    {
      public string Message;
      public int TotalCount;
      public int CurrentCount;
    }

    

    [ScriptMethod]
    [WebMethod]
    public static void RunItSync()
    {
      int ii = Thread.CurrentThread.ManagedThreadId;
      slowTask = new SlowTask(1000);
      slowTask.ExecuteAsyncTask();
    }
  }
}

sample code download here.