//路径访问绝对地址

string servername = HttpContext.Current.Request.ServerVariables["SERVER_NAME"];

string port = HttpContext.Current.Request.ServerVariables["SERVER_PORT"];

StringBuilder mHttpUrl = new StringBuilder();

mHttpUrl.Append("http://");

mHttpUrl.Append(servername);

if (port.Length > 0)

{

    mHttpUrl.Append(":");

    mHttpUrl.Append(port);

}

string mServerName = "~/AppModules/Archives/HTMLIMAGE/index.htm";

mHttpUrl.Append(this.Page.ResolveUrl(mServerName));