Add CallMemberPropertyName to OnPropertyChanged in view model

Author: klemmchr

src/MvvmBlazor.Core/Internal/Parameters/ParameterCache.cs

@@ -19,6 +19,7 @@ internal class ParameterCache : IParameterCache
 
     public void Set(Type type, ParameterInfo info)
     {
-        _cache[type] = info ?? throw new ArgumentNullException(nameof(info));
+        ArgumentNullException.ThrowIfNull(info);
+        _cache[type] = info;
     }
 }

src/MvvmBlazor.Core/Internal/WeakEventListener/WeakEventListener.cs

@@ -15,8 +15,11 @@ internal abstract class WeakEventListenerBase<T, TArgs> : IWeakEventListener whe
 
     protected WeakEventListenerBase(T source, Action<T, TArgs> handler)
     {
-        _source = new WeakReference<T>(source ?? throw new ArgumentNullException(nameof(source)));
-        _handler = new WeakReference<Action<T, TArgs>>(handler ?? throw new ArgumentNullException(nameof(handler)));
+        ArgumentNullException.ThrowIfNull(source);
+        ArgumentNullException.ThrowIfNull(handler);
+
+        _source = new WeakReference<T>(source);
+        _handler = new WeakReference<Action<T, TArgs>>(handler);
     }
 
     public bool IsAlive => _handler.TryGetTarget(out _) && _source.TryGetTarget(out _);
@@ -81,12 +84,10 @@ public TypedWeakEventListener(
         Action<T, EventHandler<TArgs>> unregister,
         Action<T, TArgs> handler) : base(source, handler)
     {
-        if (register == null)
-        {
-            throw new ArgumentNullException(nameof(register));
-        }
+        ArgumentNullException.ThrowIfNull(register);
+        ArgumentNullException.ThrowIfNull(unregister);
 
-        _unregister = unregister ?? throw new ArgumentNullException(nameof(unregister));
+        _unregister = unregister;
         register(source, HandleEvent!);
     }
 

src/MvvmBlazor.Core/Internal/WeakEventListener/WeakEventManager.cs

@@ -41,10 +41,7 @@ public class WeakEventManager : IWeakEventManager
     public void AddWeakEventListener<T, TArgs>(T source, string eventName, Action<T, TArgs> handler)
         where T : class where TArgs : EventArgs
     {
-        if (source == null)
-        {
-            throw new ArgumentNullException(nameof(source));
-        }
+        ArgumentNullException.ThrowIfNull(source);
 
         _listeners.Add(new WeakEventListener<T, TArgs>(source, eventName, handler), handler);
     }
@@ -55,10 +52,7 @@ public void AddWeakEventListener<T, TArgs>(T source, string eventName, Action<T,
     public void AddWeakEventListener<T>(T source, Action<T, PropertyChangedEventArgs> handler)
         where T : class, INotifyPropertyChanged
     {
-        if (source == null)
-        {
-            throw new ArgumentNullException(nameof(source));
-        }
+        ArgumentNullException.ThrowIfNull(source);
 
         _listeners.Add(new PropertyChangedWeakEventListener<T>(source, handler), handler);
     }
@@ -69,10 +63,7 @@ public void AddWeakEventListener<T>(T source, Action<T, PropertyChangedEventArgs
     public void AddWeakEventListener<T>(T source, Action<T, NotifyCollectionChangedEventArgs> handler)
         where T : class, INotifyCollectionChanged
     {
-        if (source == null)
-        {
-            throw new ArgumentNullException(nameof(source));
-        }
+        ArgumentNullException.ThrowIfNull(source);
 
         _listeners.Add(new CollectionChangedWeakEventListener<T>(source, handler), handler);
     }
@@ -82,10 +73,7 @@ public void AddWeakEventListener<T>(T source, Action<T, NotifyCollectionChangedE
     /// </summary>
     public void RemoveWeakEventListener<T>(T source) where T : class
     {
-        if (source == null)
-        {
-            throw new ArgumentNullException(nameof(source));
-        }
+        ArgumentNullException.ThrowIfNull(source);
 
         var toRemove = new List<IWeakEventListener>();
         foreach (var listener in _listeners.Keys)

src/MvvmBlazor.Core/ViewModel/ViewModelBase.cs

@@ -26,8 +26,9 @@ protected bool Set<T>(ref T field, T value, [CallerMemberName] string? propertyN
         return false;
     }
 
-    public virtual void OnPropertyChanged(string propertyName)
+    public virtual void OnPropertyChanged([CallerMemberName] string? propertyName = null)
     {
+        ArgumentNullException.ThrowIfNull(propertyName);
         PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
     }