Share a graphic example of implementing a progress bar in ASP.NET

This article mainly introduces in detail ASP.NET to implement a simple progress bar effect, which has certain reference value. Interested readers Friends, you can refer to it

Let’s take a look at the effect of the progress bar first

After I click the button, it will display the progress page. After the progress is completed, the progress bar Disappearing is actually relatively simple.

We need a progress bar code file ProgressBar.htm (note: there are no head tags)

<script language="javascript">
  function SetPorgressBar(pos) {
    //设置进度条居中

    var screenWidth = document.body.offsetWidth;
    ProgressBarSide.style.width = Math.round(screenWidth / 2) + "px";
    ProgressBarSide.style.left = Math.round(screenWidth / 4) + "px";
    ProgressBarSide.style.top = "50px";
    ProgressBarSide.style.height = "21px";
    ProgressBarSide.style.display = "block";

    //设置进度条百分比 
    ProgressBar.style.width = pos + "%";
    ProgressText.innerHTML = pos + "%";
  }

  function SetMaxValue(maxValue) {
    ProgressBarSide.style.width = maxValue + "px";
  }

  //完成后隐藏进度条
  function SetCompleted() {
    ProgressBarSide.style.display = "none";
  }

  function SetTitle(title) {
    ProgressTitle.innerHTML = title;
  }
</script>
<p id="ProgressBarSide" style="position: absolute; height: 21px; width: 100px;
  color: Silver; border-width: 1px; border-style: Solid; display: block">
  <p id="ProgressBar" style="position: absolute; height: 21px; width: 0%; background-color: #1475BB">
  </p>
  <p id="ProgressText" style="position: absolute; height: 21px; width: 100%; text-align: center">
  </p>
  <p id="ProgressTitle" style="position: absolute; height: 21px; top: 21px; width: 100%;
    text-align: center">
  </p>
</p>

Then we need a progress bar class ProgressBar.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;

namespace ZhuoYueE.Dop.Web.UI
{
  /// <summary>
  ///显示进度条
  /// </summary>
  public class ProgressBar : System.Web.UI.Page
  {
    /// <summary>
    /// 最大值
    /// </summary>
    private int MaxValue
    {
      get
      {
        if (ViewState["MaxValue"] == null)
        {
          return 0;
        }
        else
        {
          return Convert.ToInt32(ViewState["MaxValue"]);
        }
      }
      set
      {
        ViewState["MaxValue"] = value;
      }
    }
    /// <summary>
    /// 当前值
    /// </summary>
    private int ThisValue
    {
      get
      {
        if (ViewState["ThisValue"] == null)
        {
          return 0;
        }
        else
        {
          return Convert.ToInt32(ViewState["ThisValue"]);
        }
      }
      set
      {
        ViewState["ThisValue"] = value;
      }
    }
    /// <summary>
    /// 当前页面
    /// </summary>
    System.Web.UI.Page m_page;
    /// <summary>
    /// 功能描述:构造函数
    /// 作　　者:huangzh
    /// 创建日期:2016-05-06 11:54:34
    /// 任务编号:
    /// </summary>
    /// <param name="page">当前页面</param>
    public ProgressBar(System.Web.UI.Page page)
    {
      m_page = page;
    }

    public void SetMaxValue(int intMaxValue)
    {
      MaxValue = intMaxValue;
    }

    /// <summary>
    /// 功能描述:初始化进度条
    /// 作　　者:huangzh
    /// 创建日期:2016-05-06 11:55:26
    /// 任务编号:
    /// </summary>
    public void InitProgress()
    {
      //根据ProgressBar.htm显示进度条界面
      string templateFileName = AppDomain.CurrentDomain.BaseDirectory + "ProgressBar.htm";
      StreamReader reader = new StreamReader(@templateFileName, System.Text.Encoding.GetEncoding("GB2312"));
      string strhtml = reader.ReadToEnd();
      reader.Close();
      m_page.Response.Write(strhtml);
      m_page.Response.Flush();
    }

    /// <summary>
    /// 功能描述:设置标题
    /// 作　　者:huangzh
    /// 创建日期:2016-05-06 11:55:36
    /// 任务编号:
    /// </summary>
    /// <param name="strTitle">strTitle</param>
    public void SetTitle(string strTitle)
    {
      string strjsBlock = "<script>SetTitle(&#39;" + strTitle + "&#39;); </script>";

      m_page.Response.Write(strjsBlock);
      m_page.Response.Flush();
    }

    /// <summary>
    /// 功能描述:设置进度
    /// 作　　者:huangzh
    /// 创建日期:2016-05-06 11:55:45
    /// 任务编号:
    /// </summary>
    /// <param name="percent">percent</param>
    public void AddProgress(int intpercent)
    {
      ThisValue = ThisValue + intpercent;
      double dblstep = ((double)ThisValue / (double)MaxValue) * 100;

      string strjsBlock = "<script>SetPorgressBar(&#39;" + dblstep.ToString("0.00") + "&#39;); </script>";

      m_page.Response.Write(strjsBlock);
      m_page.Response.Flush();
    }


    public void DisponseProgress()
    {
      string strjsBlock = "<script>SetCompleted();</script>";
      m_page.Response.Write(strjsBlock);
      m_page.Response.Flush();
    }
  }
}

Then it’s time to call the method. The call is very simple. Just add code to the button event of the page or somewhere else, such as using it in the button event.

protected void btnImport_Click(object sender, EventArgs e)
    {
      ProgressBar pb = new ProgressBar(this);
      pb.SetMaxValue(110);
      pb.InitProgress();
      pb.SetTitle("这是一个测试数据");
      for (int i = 1; i <= 110; i++)
      {
        pb.AddProgress(1);
        //此处用线程休眠代替实际的操作，如加载数据等
        System.Threading.Thread.Sleep(50);
      }
      pb.DisponseProgress();
    }

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