增加ViewModelBase 生命周期控制View

Source/Store.Management.Framework/Controls/ViewModelBase.cs

@@ -0,0 +1,14 @@
+using Prism.Mvvm;
+using System.ComponentModel;
+
+namespace Store.Management.Framework.Controls;
+
+public abstract class ViewModelBase : BindableBase
+{
+    protected internal virtual void OnLoaded() { }
+    protected internal virtual void OnUnloaded() { }
+    protected internal virtual void OnActivated() { }
+    protected internal virtual void OnDeactivated() { }
+    protected internal virtual void OnClosing(CancelEventArgs e) { }
+    protected internal virtual void OnClosed() { }
+}