C#使用默认浏览器打开网页的方法

public static bool OpenBrowser(String url) 
{ 
  RegistryKey key = Registry.ClassesRoot.OpenSubKey(@"http\shell\open\command\"); 
  String s = key.GetValue("").ToString(); 
  String browserpath = null; 
  if (s.StartsWith("\"")) 
  { 
    browserpath = s.Substring(1, s.IndexOf('\"', 1) - 1); 
  } 
  else 
  { 
    browserpath = s.Substring(0, s.IndexOf(" ")); 
  } 
  return System.Diagnostics.Process.Start(browserpath, url)!=null; 
}