asp.net页面刷新后样式就发生了改变

using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.UI;
/// <summary>/// 一些常用的Js调用
/// 添加新版说明:由于旧版普遍采用Response.Write(string msg)的方式输出js脚本,这种
/// 方式输出的js脚本会在html元素的<html></html>标签之外,破坏了整个xhtml的结构,
/// 而新版本则采用ClientScript.RegisterStartupScript(string msg)的方式输出,不会改变xhtml的结构,
/// 不会影响执行效果。
/// 为了向下兼容,所以新版本采用了重载的方式,新版本中要求一个System.Web.UI.Page类的实例。
/// 创建时间:2006-9-13
/// 创建者:欢喜王子
/// 修改日期:2012-1-30
/// </summary>public class JScript
{
#region 新版本
/// <summary>
/// 弹出JavaScript小窗口
/// </summary>
/// <param name="js">窗口信息</param> public static void Alert(string message, Page page)
    {
#region
string js = @"<Script language='JavaScript'>
                    alert('" + message + "');</Script>";
//HttpContext.Current.Response.Write(js); if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "alert"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "alert", js);
        }
#endregion
    }
/// <summary>
/// 弹出消息框并且转向到新的URL
/// </summary>
/// <param name="message">消息内容</param>
/// <param name="toURL">连接地址</param> public static void AlertAndRedirect(string message, string toURL, Page page)
    {
#region
string js = "<script language=javascript>alert('{0}');window.location.replace('{1}')</script>";
//HttpContext.Current.Response.Write(string.Format(js, message, toURL)); if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(),"AlertAndRedirect"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "AlertAndRedirect", string.Format(js, message, toURL));
        }
#endregion
    }
/// <summary>
/// 回到历史页面
/// </summary>
/// <param name="value">-1/1</param> public static void GoHistory(int value, Page page)
    {
#region
string js = @"<Script language='JavaScript'>
                    history.go({0}); 
                  </Script>";
//HttpContext.Current.Response.Write(string.Format(js, value)); if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "GoHistory"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "GoHistory", string.Format(js, value));
        }
#endregion
    }
// /// <summary>
// /// 关闭当前窗口
// /// </summary>
//        public static void CloseWindow()
//        {
//            #region
//            string js = @"<Script language='JavaScript'>
//                    parent.opener=null;window.close(); 
//                  </Script>";
//            HttpContext.Current.Response.Write(js);
//            HttpContext.Current.Response.End();
//            #endregion
//        }
/// <summary>
/// 刷新父窗口
/// </summary> public static void RefreshParent(string url, Page page)
    {
#region
string js = @"<Script language='JavaScript'>
                    window.opener.location.href='" + url + "';window.close();</Script>";
//HttpContext.Current.Response.Write(js); if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "RefreshParent"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "RefreshParent", js);
        }
#endregion
    }
/// <summary>
/// 刷新打开窗口
/// </summary> public static void RefreshOpener(Page page)
    {
#region
string js = @"<Script language='JavaScript'>
                    opener.location.reload();
                  </Script>";
//HttpContext.Current.Response.Write(js); if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "RefreshOpener"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "RefreshOpener", js);
        }
#endregion
    }
/// <summary>
/// 打开指定大小的新窗体
/// </summary>
/// <param name="url">地址</param>
/// <param name="width">宽</param>
/// <param name="heigth">高</param>
/// <param name="top">头位置</param>
/// <param name="left">左位置</param> public static void OpenWebFormSize(string url, int width, int heigth, int top, int left, Page page)
    {
#region
string js = @"<Script language='JavaScript'>window.open('" + url + @"','','height=" + heigth + ",width=" + width + ",top=" + top + ",left=" + left +",location=no,menubar=no,resizable=yes,scrollbars=yes,status=yes,titlebar=no,toolbar=no,directories=no');</Script>";
//HttpContext.Current.Response.Write(js); if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "OpenWebFormSize"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "OpenWebFormSize", js);
        }
#endregion
    }
/// <summary>
/// 转向Url制定的页面
/// </summary>
/// <param name="url">连接地址</param> public static void JavaScriptLocationHref(string url, Page page)
    {
#region
string js = @"<Script language='JavaScript'>
                    window.location.replace('{0}');
                  </Script>";
        js = string.Format(js, url);
//HttpContext.Current.Response.Write(js); if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "JavaScriptLocationHref"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "JavaScriptLocationHref", js);
        }
#endregion
    }
/// <summary>
/// 打开指定大小位置的模式对话框
/// </summary>
/// <param name="webFormUrl">连接地址</param>
/// <param name="width">宽</param>
/// <param name="height">高</param>
/// <param name="top">距离上位置</param>
/// <param name="left">距离左位置</param> public static void ShowModalDialogWindow(string webFormUrl, int width, int height, int top, int left, Page page)
    {
#region
string features = "dialogWidth:" + width.ToString() + "px"
+ ";dialogHeight:" + height.ToString() + "px"
+ ";dialogLeft:" + left.ToString() + "px"
+ ";dialogTop:" + top.ToString() + "px"
+ ";center:yes;help=no;resizable:no;status:no;scroll=yes";
        ShowModalDialogWindow(webFormUrl, features, page);
#endregion
    }
/// <summary>
/// 弹出模态窗口
/// </summary>
/// <param name="webFormUrl"></param>
/// <param name="features"></param> public static void ShowModalDialogWindow(string webFormUrl, string features, Page page)
    {
string js = ShowModalDialogJavascript(webFormUrl, features);
//HttpContext.Current.Response.Write(js); if (!page.ClientScript.IsStartupScriptRegistered(page.GetType(), "ShowModalDialogWindow"))
        {
            page.ClientScript.RegisterStartupScript(page.GetType(), "ShowModalDialogWindow", js);
        }
    }
/// <summary>
/// 弹出模态窗口
/// </summary>
/// <param name="webFormUrl"></param>
/// <param name="features"></param>
/// <returns></returns> public static string ShowModalDialogJavascript(string webFormUrl, string features)
    {
#region
string js = @"<script language=javascript>                           
        showModalDialog('" + webFormUrl + "','','" + features + "');</script>";
return js;
#endregion
    }
#endregion
}

原文地址:https://www.cnblogs.com/zhcnblog/p/3255047.html