怎么获取URL

[huangyugan]

例如地址栏中的是http://www.163.com

有办法获取地址栏的URL“http://www.163.com”吗？

求C#写法

[asdfg_]

string strTemp="";
if(Request.ServerVariables["HTTPS"] == "off")
{
strTemp = "http://";
}
else
{
strTemp = "https://";
}

strTemp = strTemp + Request.ServerVariables["SERVER_NAME"];

if(Request.ServerVariables["SERVER_PORT"] != "80")
{
strTemp = strTemp + ":" + Request.ServerVariables["SERVER_PORT"];
}

strTemp = strTemp + Request.ServerVariables["URL"];

if(Request.QueryString != null)
{
strTemp = strTemp + "?" + Request.QueryString;
}