added event invoker (#37)

klemmchr · web-flow · commit 1ed702f8c2e8 · 2020-09-20T03:00:10.000+02:00
diff --git a/src/MvvmBlazor/ViewModel/ViewModelBase.cs b/src/MvvmBlazor/ViewModel/ViewModelBase.cs
@@ -16,13 +16,18 @@ protected bool Set<T>(ref T field, T value, [CallerMemberName] string? propertyN
             if (!EqualityComparer<T>.Default.Equals(field, value))
             {
                 field = value;
-                PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+                OnPropertyChanged(propertyName!);
                 return true;
             }
 
             return false;
         }
 
+        public virtual void OnPropertyChanged(string propertyName)
+        {
+            PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
+        }
+
         #region IDisposable support
 
         ~ViewModelBase()

Original file line number	Diff line number	Diff line change
`@@ -16,13 +16,18 @@ protected bool Set<T>(ref T field, T value, [CallerMemberName] string? propertyN`
`16`	`16`	`if (!EqualityComparer<T>.Default.Equals(field, value))`
`17`	`17`	`{`
`18`	`18`	`field = value;`
`19`		`- PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));`
	`19`	`+ OnPropertyChanged(propertyName!);`
`20`	`20`	`return true;`
`21`	`21`	`}`
`22`	`22`
`23`	`23`	`return false;`
`24`	`24`	`}`
`25`	`25`
	`26`	`+ public virtual void OnPropertyChanged(string propertyName)`
	`27`	`+ {`
	`28`	`+ PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));`
	`29`	`+ }`
	`30`	`+`
`26`	`31`	`#region IDisposable support`
`27`	`32`
`28`	`33`	`~ViewModelBase()`