修复删除设备时的错误

DMS.Application/Services/EventService.cs

@@ -29,6 +29,11 @@ public class EventService : IEventService
     /// </summary>
     public event EventHandler<DeviceConnectChangedEventArgs> OnDeviceConnectChanged;
 
+    /// <summary>
+    /// 设备添加事件
+    /// </summary>
+    public event EventHandler<DeviceChangedEventArgs> OnDeviceChanged;
+
 
     /// <summary>
     /// 触发设备状态改变事件
@@ -58,6 +63,16 @@ public class EventService : IEventService
 
     }
 
+    /// <summary>
+    /// 触发设备添加事件
+    /// </summary>
+    /// <param name="sender">事件发送者</param>
+    /// <param name="e">设备变更事件参数</param>
+    public void RaiseDeviceChanged(object sender, DeviceChangedEventArgs e)
+    {
+        OnDeviceChanged?.Invoke(sender, e);
+    }
+
     #endregion
 
     #region 变量事件