给Menu菜单绑定对应的数据

Helper/MessageHelper.cs

@@ -0,0 +1,34 @@
+using CommunityToolkit.Mvvm.Messaging;
+using PMSWPF.Enums;
+using PMSWPF.Message;
+using PMSWPF.ViewModels;
+
+namespace PMSWPF.Helper;
+
+public class MessageHelper
+{
+    public static void Send<T>(T message) where T : class
+    {
+        WeakReferenceMessenger.Default.Send<T>(message);
+    }
+    /// <summary>
+    /// 发送加载消息
+    /// </summary>
+    /// <param name="loadType">加载的类型，如菜单</param>
+    public static void SendLoadMessage(LoadTypes loadType)
+    {
+        WeakReferenceMessenger.Default.Send<LoadMessage>(new LoadMessage(loadType));
+    }
+    /// <summary>
+    /// 发送导航消息
+    /// </summary>
+    /// <param name="vm">导航View的ViewModel</param>
+    /// <param name="param">带的参数</param>
+    public static void SendNavgatorMessage(ViewModelBase vm,Object param=null)
+    {
+        WeakReferenceMessenger.Default.Send<NavgatorMessage>(new NavgatorMessage(vm)
+        {
+            Parameters = param
+        });
+    }
+}