QueryString传值的加密与解密方法

// 加密 Response.Redirect( " DetailInfo.aspx?id= "   +  Convert.ToBase64String(System.Text.Encoding.Default.GetBytes( " sp10006 " )).Replace( " + " , " + " )); // 解密 string  ID  =  System.Text.Encoding.Default.GetString(Convert.FromBase64String(Request.QueryString[ " id " ].ToString().Replace( " + " , " + " )));