.NET开发中你可能会用到的常用方法总结（2）

ASP.NET获取服务器信息方法

if (!IsPostBack)
{
     Label1.Text = "服务器名称："+Server.MachineName;//服务器名称
     Label2.Text = "服务器IP地址：" + Request.ServerVariables["LOCAL_ADDR"];//服务器IP地址
     Label3.Text = "服务器域名：" + Request.ServerVariables["SERVER_NAME"];//服务器域名
     Label4.Text = ".NET解释引擎版本：" + ".NET CLR" + Environment.Version.Major + "." + Environment.Version.Minor + "." + Environment.Version.Build + "." + Environment.Version.Revision;//.NET解释引擎版本
  Label5.Text = "服务器操作系统版本：" + Environment.OSVersion.ToString();//服务器操作系统版本
  Label6.Text = "服务器IIS版本：" + Request.ServerVariables["SERVER_SOFTWARE"];//服务器IIS版本
  Label7.Text = "HTTP访问端口：" + Request.ServerVariables["SERVER_PORT"];//HTTP访问端口
  Label8.Text = "虚拟目录的绝对路径：" + Request.ServerVariables["APPL_RHYSICAL_PATH"];//虚拟目录的绝对路径
  Label9.Text = "执行文件的绝对路径：" + Request.ServerVariables["PATH_TRANSLATED"];//执行文件的绝对路径
 Label10.Text = "虚拟目录Session总数：" + Session.Contents.Count.ToString();//虚拟目录Session总数
 Label11.Text = "虚拟目录Application总数：" + Application.Contents.Count.ToString();//虚拟目录Application总数
 Label12.Text = "域名主机：" + Request.ServerVariables["HTTP_HOST"];//域名主机
 Label13.Text = "服务器区域语言：" + Request.ServerVariables["HTTP_ACCEPT_LANGUAGE"];//服务器区域语言
 Label14.Text = "用户信息：" + Request.ServerVariables["HTTP_USER_AGENT"];
 Label14.Text="CPU个数："+Environment.GetEnvironmentVariable("NUMBER_OF_PROCESSORS");//CPU个数
 Label15.Text = "CPU类型：" + Environment.GetEnvironmentVariable("PROCESSOR_IDENTIFIER");//CPU类型
 Label16.Text = "进程开始时间：" + GetPrStart();//进程开始时间
 Label17.Text = "AspNet 内存占用：" + GetAspNetN();//AspNet 内存占用
 Label18.Text = "AspNet CPU时间：" + GetAspNetCpu();//AspNet CPU时间
 Label19.Text = "FSO 文本文件读写：" + Check("Scripting.FileSystemObject");//FSO 文本文件读写
 Label20.Text = "应用程序占用内存" + GetServerAppN();//应用程序占用内存
}
ASP.NET获取客户端信息
客户端IP：Page.Request.UserHostAddress
用户信息：Page.User;
服务器电脑名称：Page.Server.MachineName
当前用户电脑名称： System.Net.Dns.GetHostName()
当前电脑名： System.Environment.MachineName
当前电脑所属网域： System.Environment.UserDomainName
当前电脑用户： System.Environment.UserName
浏览器类型：Request.Browser.Browser
浏览器标识：Request.Browser.Id
浏览器版本号：Request.Browser.Version
浏览器是不是测试版本：Request.Browser.Beta
浏览器的分辨率(像素)：Request["width"].ToString() + "*" + Request["height"].ToString();//1280/1024
客户端的操作系统：Request.Browser.Platform
是不是win16系统：Request.Browser.Win16
是不是win32系统：Request.Browser.Win32
//透过代理取IP
string GetIp()
{
//可以透过代理服务器
string userIP = Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (userIP == null || userIP == "")
{
//没有代理服务器,如果有代理服务器获取的是代理服务器的IP
userIP = Request.ServerVariables["REMOTE_ADDR"];
}
return userIP;
}

C#实现页面加载
protected void Page_Load(object sender, EventArgs e)
    {
        Loading();
    }
public void Loading()
    {
        HttpContext hc = HttpContext.Current;
        //创建一个页面居中的div
        hc.Response.Write("<div id='loading'style='position: absolute; height: 100px; text-align: center;z-index: 9999; left: 50%; top: 50%; margin-top: -50px; margin-left: -175px;'> ");
        hc.Response.Write("<br />页面正在加载中，请稍候<br /><br /> ");
        hc.Response.Write("<table border='0' cellpadding='0' cellspacing='0' style='background-image: url(images/Progress/plan-bg.gif);text-align: center; width: 300px;'> ");
        hc.Response.Write("<tr><td style='height: 20px; text-align: center'><marquee direction='right' scrollamount='30' width='290px'> <img height='10' src='images/Progress/plan-wait.gif' width='270' />");
        hc.Response.Write("</marquee></td></tr></table></div>");
        //hc.Response.Write("<script>mydiv.innerText = '';</script>");
        hc.Response.Write("<script type=text/javascript>");
        //最重要是这句了,重写文档的onreadystatechange事件,判断文档是否加载完毕
        hc.Response.Write("function document.onreadystatechange()");
        hc.Response.Write(@"{ try 
                                   {
                                    if (document.readyState == 'complete')
                                    {
                                         delNode('loading');
                                       
                                    }
                                   }
                                 catch(e)
                                    {
                                        alert('页面加载失败');
                                    }
                            }
                            function delNode(nodeId)
                            {  
                                try
                                {  
                                      var div =document.getElementByIdx(nodeId);
                                      if(div !==null)
                                      {
                                          div.parentNode.removeChild(div);  
                                          div=null;   
                                          CollectGarbage();
                                      }
                                }
                                catch(e)
                                {  
                                   alert('删除ID为'+nodeId+'的节点出现异常');
                                }  
                            }
                            ");
        hc.Response.Write("</script>");
        hc.Response.Flush();
    }

Http请求图片显示：
public Image byteArrayToImage()   
{       
WebRequest myWebRequest = WebRequest.Create("图片地址");       
using (WebResponse myWebResponse = myWebRequest.GetResponse())       
{            using (Stream ReceiveStream = myWebResponse.GetResponseStream())            {                byte[] byteArrayIn = new byte[ReceiveStream.Length];               
using (MemoryStream ms = new MemoryStream(byteArrayIn))               
{      
Image.FromStream(ms);               
}           
}       
}
}