Asp.Net中避免重复提交和弹出提示框的实例代码

 <asp:Button ID="Button1" runat="server" Text="打印"  onclick="Button1_Click" OnClientClick="this.value='数据提交中……';this.disabled=true;" UseSubmitBehavior="False" />

public partial class WebForm1 : System.Web.UI.Page  {    protected override void OnLoad(EventArgs e)    {      StringBuilder pageBase_script = new StringBuilder("<script Language=/"Javascript/">");      pageBase_script.Append(@"var times=0;         function pageBase_tick() //用于显示执行的时长         {         times++;            var str = '';            var temp = times%5;            for(var i=0;i<temp;i++)              str+='．';         document.getElementById('pageBase_Clocktimes').innerHTML ='正在提交,请稍候'+ str;          } "        );      pageBase_script.Append("<").Append("/").Append("script>");      StringBuilder pageBase_div = new StringBuilder(" <div id=/"pageBase_runing/" runat=/"server/" style=/"z-index: 12000; left: 0px; width: 100%; position: absolute; top: 0px; height: 100%/">");      pageBase_div.Append("<table width=/"100%/" height=/"100%/">");      pageBase_div.Append("<tr align=/"center/" valign=/"middle/">");      pageBase_div.Append("<td>");      pageBase_div.Append(" <table width=/"200/" height=/"25/" bgcolor=/"#9999FF/" style=/"filter: Alpha(Opacity=70); /">");      pageBase_div.Append(" <tr align=/"center/" valign=/"middle/">");      pageBase_div.Append("  <td>");      pageBase_div.Append("<div style=/"width:200px;height:25px; background-color: #99CCFF; /">");      pageBase_div.Append("     <div id=/"pageBase_Clocktimes/" style=/"color: #FF0000; float:left; width:196px;height:21px /" >正在提交,请稍候</div>");      pageBase_div.Append("</div>");      pageBase_div.Append("</td>");      pageBase_div.Append(" </tr>");      pageBase_div.Append(" </table>");      pageBase_div.Append(" </td>");      pageBase_div.Append(" </tr>");      pageBase_div.Append(" </table>");      pageBase_div.Append("</div>");      StringBuilder pageBase_divHide = new StringBuilder("<script Language=/"Javascript/">");      pageBase_divHide.Append("document.getElementById('pageBase_runing').style.visibility = /"hidden/";");      pageBase_divHide.Append("<").Append("/").Append("script>");      if (!Page.ClientScript.IsStartupScriptRegistered("runingscript"))      {        Page.ClientScript.RegisterStartupScript(Page.GetType(), "pageBase_div", pageBase_div.ToString());        Page.ClientScript.RegisterStartupScript(Page.GetType(), "pageBase_script", pageBase_script.ToString());        Page.ClientScript.RegisterStartupScript(Page.GetType(), "pageBase_divHide", pageBase_divHide.ToString());      }      base.OnLoad(e);    }    /// <summary>    /// 设置提交之后.出现请等待提示,在页面调用基类的这个方法,把要提交的控件传入即可    /// </summary>    /// <param name="btn">提交按钮</param>    public void SubmitLoad(Button btn)    {      btn.Attributes.Add("onclick", "javascript:document.getElementById('pageBase_runing').style.visibility='visible';window.setInterval('pageBase_tick()',500);");    }    /// <summary>    /// 设置提交之后.出现请等待提示    /// </summary>    /// <param name="lbtn">提交按钮</param>    public void SubmitLoad(LinkButton lbtn)    {      lbtn.Attributes.Add("onclick",                 "javascript:document.getElementById('pageBase_runing').style.visibility='visible';window.setInterval('pageBase_tick()',1000);");    }    protected void Page_Load(object sender, EventArgs e)    {      SubmitLoad(Button1);    }    protected void Button1_Click(object sender, EventArgs e)    {      Button1.Enabled=false;      //string IP = PrintingLabel.SearchPrinterIP(TextBox1.Text, TextBox2.Text, TextBox3.Text);      //Response.Write(IP);      int ifs=0;      for (int i = 0; i < 1000000000; i++)      {        ifs++;      }    }  }}