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ASP.NET技巧:教你制做Web实时进度条

发布时间:2020-03-20 23:29:57 所属栏目:Asp教程 来源:互联网
导读:ASP.NET技巧:教你制做Web实时进度条

private void Button1_Click(object sender, System.EventArgs e)
        {
            System.Threading.Thread thread=new System.Threading.Thread(new System.Threading.ThreadStart(LongTask));
            thread.Start();

Session["State"]=1;
            OpenProgressBar(this.Page);
        }
    }
}


新建一个进度条页面Progress.aspx
客户端:
在head中加入<base target="_self">
<body MS_POSITIONING="GridLayout">
        <form method="post" runat="server">
            <asp:Label runat="server"></asp:Label>
            <asp:Panel runat="server" BorderStyle="Solid" BorderWidth="1px"
                ForeColor="Silver">
                <asp:Panel runat="server" BackColor="Green"></asp:Panel>
            </asp:Panel>
            <asp:Label runat="server" ForeColor="Blue"></asp:Label>
        </form>
</body>
服务器端:
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace WebProgressBar
{
    /**//// <summary>
    /// Summary description for Progress.
    /// </summary>
    public class Progress : System.Web.UI.Page
    {
        protected System.Web.UI.WebControls.Label lblMessages;
        protected System.Web.UI.WebControls.Panel panelProgress;
        protected System.Web.UI.WebControls.Panel panelBarSide;
        protected System.Web.UI.WebControls.Label lblPercent;

        private int state = 0;
        private void Page_Load(object sender, System.EventArgs e)
        {
            // Put user code to initialize the page here
            if(Session["State"]!=null)
            {
                state = Convert.ToInt32(Session["State"].ToString());
            }
            else
            {
                Session["State"]=0;
            }
            if(state>0&&state<=10)
            {
                this.lblMessages.Text = "Task undertaking!";
                this.panelProgress.Width = state*30;
                this.lblPercent.Text = state*10 + "%";
                Page.RegisterStartupScript("","<script>window.setTimeout('window.Form1.submit()',100);</script>");
            }
            if(state==100)
            {
                this.panelProgress.Visible = false;
                this.panelBarSide.Visible = false;
                this.lblMessages.Text = "Task Completed!";
                Page.RegisterStartupScript("","<script>window.close();</script>");
            }
        }

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