Added more examples, added clarifying statements, clean up C#.

docs/csharp/misc/cs0200.md

@@ -1,45 +1,81 @@
 ---
 title: "Compiler Error CS0200"
-ms.date: 07/20/2015
-f1_keywords: 
+ms.date: 04/22/2020
+f1_keywords:
   - "CS0200"
-helpviewer_keywords: 
+helpviewer_keywords:
   - "CS0200"
 ms.assetid: 1990704a-edfa-4dbd-8477-d9c7aae58c96
 ---
 # Compiler Error CS0200
-Property or indexer 'property' cannot be assigned to — it is read only  
-
- An attempt was made to assign a value to a [property](../programming-guide/classes-and-structs/using-properties.md), but the property does not have a set accessor. Resolve the error by adding a set accessor. For more information, see [How to declare and use read write properties](../programming-guide/classes-and-structs/how-to-declare-and-use-read-write-properties.md).
-
-## Example  
- The following sample generates CS0200:  
-
-```csharp  
-// CS0200.cs  
-public class MainClass  
-{  
-    // private int _mi;  
-    int I  
+Property or indexer 'property' cannot be assigned to -- it is read only
+
+An attempt was made to assign a value to a [property](../programming-guide/classes-and-structs/using-properties.md), but the property does not have a set accessor or the assignment was outside of the constructor. Resolve the error by adding a set accessor. For more information, see [How to declare and use read write properties](../programming-guide/classes-and-structs/how-to-declare-and-use-read-write-properties.md).
+
+## Examples
+The following sample generates CS0200:
+
+```csharp
+// CS0200.cs
+public class Example
+{
+    private int _mi;
+    int I
+    {
+        get
+        {
+            return _mi;
+        }
+        // uncomment the set accessor and declaration for _mi
+        /*
+        set
+        {
+            _mi = value;
+        }
+        */
+    }
+
+    public static void Main()
     {  
-        get  
-        {  
-            return 1;  
-        }  
-
-        // uncomment the set accessor and declaration for _mi  
-        /*  
-        set  
-        {  
-            _mi = value;  
-        }  
-        */  
-    }  
-
-    public static void Main ()  
-    {  
-        MainClass II = new MainClass();  
-        II.I = 9;   // CS0200  
-    }  
+        Example example = new Example();
+        example.I = 9;   // CS0200
+    }
 }  
 ```
+
+The following sample uses [auto-implemented properties](../programming-guide/classes-and-structs/auto-implemented-properties.md), [object initializers](../programming-guide/classes-and-structs/object-and-collection-initializers.md), and still generates CS0200:
+
+```csharp
+// CS0200.cs
+public class Example
+{
+    int I
+    {
+        get;
+        // uncomment the set accessor and declaration
+        //set;
+    }
+
+    public static void Main()
+    {  
+        var example = new Example
+        {
+            I = 9   // CS0200
+        };
+    }
+}
+```
+
+Assignment to a property or indexer 'property' that is read only, can be achieved through adding a set accessor or by assigning to the property in the object's constructor.
+
+```csharp
+public class Example
+{
+    int I { get; }
+
+    public Example()
+    {
+        I = -7;
+    }
+}
+```