Esempio n. 1
0
        private static bool isValid = true; // If a validation error occurs,
                                            // set this flag to false in the
                                            // validation event handler. 
        static void Main(string[] args)
        {
            XmlTextReader r = new XmlTextReader(@"..\..\GenKeyIDList.xml");
            XmlValidatingReader v = new XmlValidatingReader(r);
            
            v.ValidationType = ValidationType.Schema;
            v.ValidationEventHandler += 
               new ValidationEventHandler(MyValidationEventHandler);

            while (v.Read())
            {
                // Can add code here to process the content.
                Console.WriteLine(v.LocalName);

                if (v.LocalName == "GenericKeyIDList")
                {
                    if(v.IsStartElement())
                    {
                        v.MoveToFirstAttribute();               
                        v.ReadAttributeValue();
                        Console.WriteLine("    " + v.ReadContentAsString());
                    }
                }
            }
            v.Close();

            // Check whether the document is valid or invalid.
            if (isValid)
            {
               Console.WriteLine("Document is valid");
            }
            else
            {
               Console.WriteLine("Document is invalid");
            }

        
        }
        /// <summary>
        /// takes in raw xml string and attempts to parse it into a workable hash.
        /// all valid xml for the gateway contains
        /// <transaction><fields><field key="attribute name">value</field></fields></transaction>
        /// there will be 1 or more (should always be more than 1 to be valid) field tags
        /// this method will take the attribute name and make that the hash key and then the value is the value 
        /// if an error occurs then the error key will be added to the hash.
        /// </summary>
        /// <param name="xml"></param>
        /// <returns></returns>
        private Hashtable parseXML(string xml)
        {
            Hashtable ret_hash = new Hashtable(); //stores key values to return
            XmlTextReader txtreader = null;
            XmlValidatingReader reader = null;

            if (xml != null && xml.Length > 0)
            {

                try
                {
                    //Implement the readers.
                    txtreader = new XmlTextReader(new System.IO.StringReader(xml));
                    reader = new XmlValidatingReader(txtreader);

                    //Parse the XML and display the text content of each of the elements.
                    while (reader.Read())
                    {
                        if (reader.IsStartElement() && reader.Name.ToLower() == "field")
                        {
                            if (reader.HasAttributes)
                            {
                                //we want the key attribute value
                                ret_hash[reader.GetAttribute(0).ToLower()] = reader.ReadString();
                            }
                            else
                            {
                                ret_hash["error"] = "All FIELD tags must contains a KEY attribute.";
                            }
                        }
                    } //ends while
                }
                catch (Exception e)
                {
                    //handle exceptions
                    ret_hash["error"] = e.Message;
                }
                finally
                {
                    if (reader != null) reader.Close();
                }
            }
            else
            {
                //incoming xml is empty
                ret_hash["error"] = "No data was present. Valid XML must be sent in order to process a transaction.";
            }

            return ret_hash;
        }