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  • 刷新页面时,防止滚动条上滚

      #region 刷新页面时,防止滚动条上滚
      /// <summary>
      /// Persist ScrollBar's Position After a PostBack
      /// </summary>
      private void PersistScrollPosition()
      {
       StringBuilder saveScrollPosition = new StringBuilder();
       StringBuilder setScrollPosition = new StringBuilder();
       
       RegisterHiddenField("__SCROLLPOS", "0");

       saveScrollPosition.Append("<script language='javascript'>");
       saveScrollPosition.Append("function saveScrollPosition() {");
       saveScrollPosition.Append(" document.forms[0].__SCROLLPOS.value = document.body.scrollTop;");
       saveScrollPosition.Append("}");
       saveScrollPosition.Append("document.body.onscroll=saveScrollPosition;");
       saveScrollPosition.Append("</script>");
       
       RegisterStartupScript("saveScroll", saveScrollPosition.ToString());
       
       if (Page.IsPostBack)
       {
        setScrollPosition.Append("<script language='javascript'>");
        setScrollPosition.Append("function setScrollPosition() {");
        setScrollPosition.Append(" document.body.scrollTop = " + Request["__SCROLLPOS"] + ";");
        setScrollPosition.Append("}");
        setScrollPosition.Append("document.body.onload=setScrollPosition;");
        setScrollPosition.Append("</script>");
           
        RegisterStartupScript("setScroll", setScrollPosition.ToString());
       }
      }
      #endregion

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  • 原文地址:https://www.cnblogs.com/leeairw/p/136146.html
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