页面刷新失去焦点

最新推荐文章于 2021-01-07 17:14:16 发布

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最新推荐文章于 2021-01-07 17:14:16 发布

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原文链接：http://www.cnblogs.com/jinglelin/archive/2004/09/09/41411.html

1、在aspx页面给body添加id属性：<body id="thebody" MS_POSITIONING="GridLayout">
2、后台代码（.cs文件）中引用：using System.Text;
3、添加方法：
#region "防止页面滚动"
private void RetainScrollPosition()
{
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 = thebody.scrollTop;");
saveScrollPosition.Append("}");
saveScrollPosition.Append("thebody.onscroll=saveScrollPosition;");
saveScrollPosition.Append("</script>");

RegisterStartupScript("saveScroll", saveScrollPosition.ToString());

if (Page.IsPostBack)
{
     setScrollPosition.Append("<script language='javascript'>");
  setScrollPosition.Append("function setScrollPosition() {");
  setScrollPosition.Append("    thebody.scrollTop = " + Request["__SCROLLPOS"] + ";");
  setScrollPosition.Append("}");
  setScrollPosition.Append("thebody.onload=setScrollPosition;");
  setScrollPosition.Append("</script>");

  RegisterStartupScript("setScroll", setScrollPosition.ToString());
   }
  }
#endregion

4、在page_load中调用此方法：
this.RetainScrollPosition();

转载于:https://www.cnblogs.com/jinglelin/archive/2004/09/09/41411.html