Add the implementation of InvoiceGenerationFailed Event

TCCInvoice/InvoiceGenerator.cs

@@ -45,8 +45,7 @@ namespace TCCInvoice
 
         #region Constants
         private const string SELLER_ID = "83196607";
-        private const string UNKNOWN_BUYER_NAME = "    "; // 未查詢到的營業人名稱
-        private const string DEFAULT_BUYER_NAME = "xxxx"; // 一般消費者
+        private const string UNKNOWN_BUYER_NAME = "----"; // 未查詢到營業人名稱或一般消費者
         private const string DEFAULT_BUYER_ID = "0000000000";
         private const int FREE_ZERO_TAX_SALES_AMOUNT = 0;
         private const string INVOICE_TYPE = "07";
@@ -99,7 +98,7 @@ namespace TCCInvoice
 
                 if (buyerId.Equals(DEFAULT_BUYER_ID)) // 一般消費者
                 {
-                    buyerName = DEFAULT_BUYER_NAME;
+                    buyerName = UNKNOWN_BUYER_NAME;
                 }
                 else // 有統編
                 {
@@ -203,31 +202,34 @@ namespace TCCInvoice
                                                          string invoiceDate, string invoiceTime, string carrierNumber);
         public event InvoiceGenerateEventHandler InvoiceGenerated;
 
+        public delegate void InvoiceFailEventHandler(string dataNumber, string description);
+        public event InvoiceFailEventHandler InvoiceGenerationFailed;
+
         private void InvoiceXmlCreated(object sender, FileSystemEventArgs e)
         {
-            string datanumber = null;
-            string invoicenumber = null;
-            string invoicedate = null;
-            string invoicetime = null;
-            string carriernumber = null;
-
             XDocument xDoc = XDocument.Load(e.FullPath);
             
             string status = xDoc.Descendants("Status").ElementAt(0).Value;
             if (status == "1")
             {
-                invoicenumber = xDoc.Descendants("InvoiceNumber").ElementAt(0).Value;
-                datanumber = xDoc.Descendants("DataNumber").ElementAt(0).Value;
-                invoicedate = xDoc.Descendants("InvoiceDate").ElementAt(0).Value;
-                invoicetime = xDoc.Descendants("InvoiceTime").ElementAt(0).Value;
-                // carriernumber = xDoc.Descendants("CarrierId1").ElementAt(0).Value;
+                string invoicenumber = xDoc.Descendants("InvoiceNumber").ElementAt(0).Value;
+                string datanumber = xDoc.Descendants("DataNumber").ElementAt(0).Value;
+                string invoicedate = xDoc.Descendants("InvoiceDate").ElementAt(0).Value;
+                string invoicetime = xDoc.Descendants("InvoiceTime").ElementAt(0).Value;
+                string carriernumber = null; 
+                // string carriernumber = xDoc.Descendants("CarrierId1").ElementAt(0).Value;
+
+                InvoiceGenerated?.Invoke(datanumber, invoicenumber, invoicedate, invoicetime, carriernumber);
             }
-            else
+            else // Failure
             {
-                // Failure
+                string description = xDoc.Descendants("Description").ElementAt(0).Value;
+                string datanumber = xDoc.Descendants("DataNumber").ElementAt(0).Value;
+
+                InvoiceGenerationFailed?.Invoke(datanumber, description);
             }    
 
-            InvoiceGenerated?.Invoke(datanumber, invoicenumber, invoicedate, invoicetime, carriernumber);
+            
         }
         #endregion
 

TCCInvoice/Program.cs

@@ -13,13 +13,15 @@ namespace TCCInvoice
             // 建立InvoiceGenerator類別的物件
             InvoiceGenerator myInvoice = new InvoiceGenerator();
 
-            // 註冊發票號碼已開立的事件
+            // 註冊發票號碼已開立的事件通知
             myInvoice.InvoiceGenerated += MyInvoice_InvoiceGenerated;
+            // 註冊發票號碼開立失敗的事件通知
+            myInvoice.InvoiceGenerationFailed += MyInvoice_InvoiceGenerationFailed;
 
             // 填具待開立發票的相關資料(Preinvoice)
-            myInvoice.DataNumber = "2022020388888887";
+            myInvoice.DataNumber = "20220205123456222";
             myInvoice.DataDate = DateTime.Today;
-            myInvoice.BuyerId = "null"; // 一般消費者
+            myInvoice.BuyerId = null; // 一般消費者
             myInvoice.TotalAmount = 524;
             myInvoice.CarrierId1 = null;
             myInvoice.DonateMark = 0;
@@ -49,11 +51,19 @@ namespace TCCInvoice
         private static void MyInvoice_InvoiceGenerated(string dataNumber, string invoiceNumber,
                                                        string invoiceDate, string invoiceTime, string carrierNumber)
         {
+            Console.WriteLine("發票已開立-----");
             Console.WriteLine("單據編號：" + dataNumber);
             Console.WriteLine("發票號碼：" + invoiceNumber);
             Console.WriteLine("發票日期：" + invoiceDate);
             Console.WriteLine("發票時間：" + invoiceTime);
             Console.WriteLine("載具號碼：" + carrierNumber);
         }
+
+        private static void MyInvoice_InvoiceGenerationFailed(string dataNumber, string description)
+        {
+            Console.WriteLine("發票開立失敗-----");
+            Console.WriteLine("單據編號：" + dataNumber);
+            Console.WriteLine("錯誤代碼與描述：" + description);
+        }
     }
 }