使用新框架与技术代替旧框架与技术，实现涂装车间后道标签扫码程序

RIZO_Application/Modules/RIZO_Application.Modules.ModuleName/ViewModels/PrintControlViewModel.cs

@@ -0,0 +1,144 @@
+using linesider_screen_tool;
+using System.Collections.Generic;
+using System;
+using Prism.Events;
+using Prism.Regions;
+using RIZO_Application.Core;
+using RIZO_Application.Core.Mvvm;
+using RIZO_Helper.Tools;
+using RIZO_Application.Infrastructure.Model;
+
+namespace RIZO_Application.Modules.ModuleName.ViewModels
+{
+    public class PrintControlViewModel : RegionViewModelBase, IDisposable
+    {
+        private readonly IEventAggregator _eventAggregator;
+        private readonly BartenderPrintHelper _printHelper;
+        private SubscriptionToken _printEventToken;
+        private bool _isDisposed;
+
+        public PrintControlViewModel(
+            IRegionManager regionManager,
+            IEventAggregator eventAggregator,
+            BartenderPrintHelper printHelper)
+            : base(regionManager)
+        {
+            _eventAggregator = eventAggregator;
+            _printHelper = printHelper;
+
+            Initialize();
+        }
+
+        private void Initialize()
+        {
+            try
+            {
+                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印模块初始化开始");
+
+                // 订阅打印事件，使用UI线程处理，保持强引用
+                _printEventToken = _eventAggregator.GetEvent<PrintEvent>()
+                    .Subscribe(OnPrintRequested, ThreadOption.UIThread, true);
+
+                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印模块初始化完成");
+            }
+            catch (Exception ex)
+            {
+                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印模块初始化失败: {ex.Message}");
+                throw;
+            }
+        }
+
+        private void OnPrintRequested(PrintDto printDto)
+        {
+            // 判断是否是打印主站
+            bool isPrintMain = SiteConfigs.Current.IsPrintMain.Value;
+            
+            if (!isPrintMain)
+            {
+                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印请求被忽略：此站点非打印主站");
+                return;
+            }
+            string siteNo = SiteConfigs.Current.SiteName;
+            if(printDto.SiteNo != siteNo)
+            {
+                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印请求被忽略：站点号不匹配{printDto.SiteNo}-{siteNo}");
+                return;
+            }
+            if (_isDisposed)
+            {
+                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印请求被忽略：打印资源已释放");
+                return;
+            }
+
+            try
+            {
+                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"收到打印请求: {printDto.Name}");
+
+                // 准备打印参数
+                var printParameters = new Dictionary<string, string>
+                {
+                    { "10", printDto.PartNumber },
+                    { "11", "02S" },
+                    { "10000", printDto.WorkOrder },
+                    { "10002", printDto.Team },
+                    { "10003", printDto.Sort.ToString() },
+                    { "10004", printDto.BatchCode },
+                    { "10005", printDto.Sort.ToString() },
+                    { "10006", printDto.BatchCode },
+                    { "10007", printDto.PackageNum.ToString() },
+                    { "10011", printDto.LabelType.ToString() }
+                };
+
+                // 执行打印
+                bool printSuccess = _printHelper.PrintLabel(
+                    templatePath: printDto.Path,
+                    subStringValues: printParameters,
+                    copies: 1);
+
+                if (printSuccess)
+                {
+                    _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印成功: {printDto.Name}");
+                }
+                else
+                {
+                    _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印失败: {printDto.Name}");
+                }
+            }
+            catch (Exception ex)
+            {
+                _eventAggregator.GetEvent<SystemLogEvent>().Publish($"打印过程中发生错误: {ex.Message}");
+            }
+        }
+
+        public void Destroy()
+        {
+            Dispose();
+        }
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (_isDisposed)
+                return;
+
+            _isDisposed = true;
+
+            if (disposing)
+            {
+                // 释放托管资源
+                _printEventToken?.Dispose();
+                _printHelper?.Dispose();
+            }
+        }
+
+        ~PrintControlViewModel()
+        {
+            Dispose(false);
+        }
+    }
+}