Thiết lập gần hết giấy cho in tối đa 20 lần

AppData.cs

@@ -19,6 +19,7 @@ using System.Threading;
 using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
+using System.Windows.Forms.VisualStyles;
 using System.Windows.Threading;
 
 namespace SafeBagDE70
@@ -44,7 +45,8 @@ namespace SafeBagDE70
         static Task? resendTaskHistories = null;
         static Task? resendTaskEvents = null;
         static Task? commandTask = null;
-        public static DeviceStatus? _DeviceStatus = null;
+        private static DeviceStatus? _DeviceStatus = null;
+        public static DeviceStatusFile? DeviceStatusFile = null; 
         public static DeviceStatus? DeviceStatus
         {
             set {  _DeviceStatus = value; }
@@ -67,6 +69,7 @@ namespace SafeBagDE70
             CDMSTATE = new CDMSTATE();
             ADMINDEVICESTATUS = new ADMINDEVICESTATUS();
             customerAccounts = new ObservableCollection<CustomerAccount>();
+            GetDeviceStatusFromFile();
             //InitDeviceStatus();
         }
         public static void Init()
@@ -474,6 +477,108 @@ namespace SafeBagDE70
                 Log.Error("GetandExecuteCommands error: "+str);
             }
         }
+        static string deviceStatusFileName = "device_status.txt";
+        public static void GetDeviceStatusFromFile()
+        {
+            try
+            {
+                lock(deviceStatusFileName)
+                {
+                    if (File.Exists(deviceStatusFileName))
+                    {
+                        var fileContent = File.ReadAllText(deviceStatusFileName);
+                        DeviceStatusFile = JsonConvert.DeserializeObject<DeviceStatusFile>(fileContent);
+                    }
+                    else
+                    {
+                        DeviceStatusFile = new DeviceStatusFile();
+                        UpdateDeviceStatusToFile();
+                    }
+                }
+                Log.Information("GetPrinterStatusFromFile success");
+            }
+            catch(Exception ex)
+            {
+                Log.Fatal(ex, "GetPrinterStatusFromFile");
+            }
+        }
+        public static void UpdatePrinterStatus(bool IsPrinterPaperOut)
+        {
+            try
+            {
+                if (DeviceStatusFile!=null)
+                {
+                    DeviceStatusFile.IsPrinterNearPaperOut = IsPrinterPaperOut;
+                    if (!IsPrinterPaperOut)
+                    {
+                        DeviceStatusFile.PrintingCountFromNPO = 0;
+                    }
+                }
+            }catch(Exception ex)
+            {
+                Log.Fatal(ex, "UpdatePrinterStatus");
+            }
+        }
+        public static void UpdatePrintingCountToStatusFile()
+        {
+            try
+            {
+                Log.Information("UpdateTransactionCountToStatusFile");
+
+                if (DeviceStatusFile!=null)
+                {
+                    if (DeviceStatusFile.IsPrinterNearPaperOut)
+                    {
+                        DeviceStatusFile.PrintingCountFromNPO++;
+                    }
+                    else
+                    {
+                        DeviceStatusFile.PrintingCountFromNPO = 0;
+                    }
+                    UpdateDeviceStatusToFile();
+
+                    Log.Information("UpdateTransactionCountToStatusFile success");
+                }
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "UpdateTransactionCountToStatusFile");
+            }
+        }
+        public static void UpdateDeviceStatusToFile()
+        {
+            try
+            {
+                lock (deviceStatusFileName)
+                {
+                    if (File.Exists(deviceStatusFileName))
+                    {
+                        var fileContent = JsonConvert.SerializeObject(DeviceStatusFile);
+                        File.WriteAllText(deviceStatusFileName, fileContent);
+                    }
+                }
+                Log.Information("UpdatePrinterStatusFromFile success");
+            }
+            catch (Exception ex)
+            {
+                Log.Fatal(ex, "UpdatePrinterStatusFromFile");
+            }
+        }
+        public static bool IsStopPrinting()
+        {
+            try
+            {
+                if (DeviceStatusFile != null)
+                    return DeviceStatusFile.IsStopPrinting();
+                else
+                    return false;
+            }
+            catch(Exception ex)
+            {
+                return false;
+            }
+        }
+
         public static async Task<int> UpdateCustomers()
         {
             try
@@ -867,6 +972,19 @@ namespace SafeBagDE70
         public string? TransactionCode { get; set; }
         public string Description { get; set; }
     }
+    public class DeviceStatusFile
+    {
+        public bool IsPrinterNearPaperOut = false;
+        public int PrintingCountFromNPO = 0;//Transaction Count From Near Paper Out 
+        public bool IsStopPrinting()
+        {
+            if (IsPrinterNearPaperOut && PrintingCountFromNPO >= 20)
+            {
+                return true;
+            }
+            return false;
+        }
+    }
     public enum DeviceStatusCode { 
         NORMAL=0,
         ERROR=1

UserControl/DepositSMUCv2.xaml.cs

@@ -451,7 +451,7 @@ namespace SafeBagDE70
             var strPrinterMessage = "";
             if (status != null)
             {
-                if (status.StsNOPAPER)
+                if (status.StsNOPAPER|| AppData.IsStopPrinting())
                 {
                     AppData.DeviceStatus.PrinterStatus = (int)PrinterStatusCode.PAPEROUT;
                     StopTimers();
@@ -461,6 +461,7 @@ namespace SafeBagDE70
                 }
                 else if (status.StsNEARENDPAP)
                 {
+                    AppData.UpdatePrinterStatus(true);
                     strPrinterMessage = "MÁY IN:  GẦN HẾT GIẤY";
                     AppData.DeviceStatus.PrinterStatus = (int)PrinterStatusCode.NEARPAPEROUT;
                     AppData.ADMINDEVICESTATUS.PrinterStatus = strPrinterMessage;
@@ -473,6 +474,8 @@ namespace SafeBagDE70
                 }
                 else
                 {
+                    AppData.UpdatePrinterStatus(false);
+
                     strPrinterMessage = "MÁY IN:  OK";
                     AppData.DeviceStatus.PrinterStatus = (int)PrinterStatusCode.NORMAL;
                     AppData.ADMINDEVICESTATUS.PrinterStatus = strPrinterMessage;
@@ -1471,8 +1474,7 @@ namespace SafeBagDE70
                 // or for more complex scenarios, directly manipulate the byte stream sent to the printer.
             };
             printDocument.Print();
-
+            AppData.UpdatePrintingCountToStatusFile();
-
         }
 
         private void UserControl_Unloaded(object sender, RoutedEventArgs e)