CAN设置添加

SettingModule/ViewModels/Dialogs/CANConfigViewModel.cs

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+using System.Collections.ObjectModel;
+using System.Windows.Input;
+using UIShare.PubEvent;
+using UIShare.UIViewModel;
+using UIShare.ViewModelBase;
+
+namespace SettingModule.ViewModels.Dialogs
+{
+    /// <summary>
+    /// CAN 连接配置对话框 VM。
+    /// 通过 DialogParameters 接收宿主 DeviceInfoVM；保存时把副本写回宿主。
+    /// 参数对应 ZLGCANFD 构造函数 + 初始化并启动通道 方法。
+    /// </summary>
+    public class CANConfigViewModel : DialogViewModelBase
+    {
+        #region 属性
+
+        private string _title = "CAN 连接配置";
+        public string Title
+        {
+            get => _title;
+            set => SetProperty(ref _title, value);
+        }
+
+        /// <summary>编辑用的副本，取消时不会污染宿主对象。</summary>
+        private CANConfigVM _config = new();
+        public CANConfigVM Config
+        {
+            get => _config;
+            set => SetProperty(ref _config, value);
+        }
+
+        /// <summary>常用仲裁域波特率。</summary>
+        public ObservableCollection<string> CommonABitBauds { get; } = new()
+        {
+            "250000", "500000", "1000000"
+        };
+
+        /// <summary>常用数据域波特率。</summary>
+        public ObservableCollection<string> CommonDBitBauds { get; } = new()
+        {
+            "1000000", "2000000", "4000000", "5000000", "8000000"
+        };
+
+        private string _errorMessage = string.Empty;
+        public string ErrorMessage
+        {
+            get => _errorMessage;
+            set => SetProperty(ref _errorMessage, value);
+        }
+
+        #endregion
+
+        #region 命令
+        public ICommand SaveCommand { get; }
+        public ICommand CancelCommand { get; }
+        #endregion
+
+        // 用于保存时把副本回写到原对象
+        private DeviceInfoVM? _hostDevice;
+
+        public CANConfigViewModel(IContainerProvider containerProvider) : base(containerProvider)
+        {
+            SaveCommand = new DelegateCommand(OnSave);
+            CancelCommand = new DelegateCommand(OnCancel);
+        }
+
+        private bool Validate(out string error)
+        {
+            error = string.Empty;
+            if (Config.DeviceType == 0)
+            {
+                error = "设备类型号不能为 0";
+                return false;
+            }
+            if (string.IsNullOrWhiteSpace(Config.ABitBaud))
+            {
+                error = "仲裁域波特率不能为空";
+                return false;
+            }
+            if (string.IsNullOrWhiteSpace(Config.DBitBaud))
+            {
+                error = "数据域波特率不能为空";
+                return false;
+            }
+            return true;
+        }
+
+        private void OnSave()
+        {
+            if (!Validate(out var error))
+            {
+                ErrorMessage = error;
+                return;
+            }
+            ErrorMessage = string.Empty;
+
+            // 把副本写回宿主
+            if (_hostDevice != null)
+            {
+                _hostDevice.CANConfig ??= new CANConfigVM();
+                Config.CopyTo(_hostDevice.CANConfig);
+                _hostDevice.ConnectionType = "CAN";
+            }
+
+            RequestClose.Invoke(ButtonResult.OK);
+        }
+
+        private void OnCancel() => RequestClose.Invoke(ButtonResult.Cancel);
+
+        #region Prism Dialog 规范
+        public override void OnDialogOpened(IDialogParameters parameters)
+        {
+            _eventAggregator.GetEvent<OverlayEvent>().Publish(true);
+
+            if (parameters.ContainsKey("Device"))
+            {
+                _hostDevice = parameters.GetValue<DeviceInfoVM>("Device");
+                Title = $"CAN 连接配置 - {_hostDevice?.DeviceName}";
+                Config = new CANConfigVM(_hostDevice?.CANConfig);
+            }
+            else if (parameters.ContainsKey("Config"))
+            {
+                Config = new CANConfigVM(parameters.GetValue<CANConfigVM>("Config"));
+            }
+        }
+
+        public override void OnDialogClosed()
+        {
+            _eventAggregator.GetEvent<OverlayEvent>().Publish(false);
+        }
+        #endregion
+    }
+}