null-check before invoking event delegates (dotnet#40)

pkulikov · BillWagner · commit a2edf7134a0a · 2018-05-04T12:56:40.000-04:00
diff --git a/csharp/serialization/Loan.cs b/csharp/serialization/Loan.cs
@@ -28,7 +28,7 @@ public string Customer
             set
             {
                 customer = value;
-                PropertyChanged(this,
+                PropertyChanged?.Invoke(this,
                   new PropertyChangedEventArgs(nameof(Customer)));
             }
         }

Original file line number	Diff line number	Diff line change
`@@ -28,7 +28,7 @@ public string Customer`
`28`	`28`	`set`
`29`	`29`	`{`
`30`	`30`	`customer = value;`
`31`		`- PropertyChanged(this,`
	`31`	`+ PropertyChanged?.Invoke(this,`
`32`	`32`	`new PropertyChangedEventArgs(nameof(Customer)));`
`33`	`33`	`}`
`34`	`34`	`}`