Adding an example of a useless setter.

Author: aubertc

source/code/projects/Properties_errors/Properties_errors/Derived.cs

@@ -30,6 +30,16 @@ public string Attr1
   }
 
 */
+  
+  // A similar issue is to have a setter that does nothing:
+  
+  public string Attr2 {get{return attr1;} set{}}
+  
+  public string GetAttr2(){
+    return attr1;
+  }
+      
+  
   // Misconception #2
   public void Test(string argP)
   {

source/code/projects/Properties_errors/Properties_errors/Program.cs

@@ -9,6 +9,9 @@ static void Main()
 
     test1.Test(null);
     test1.Test();
+    
+    test1.Attr2 = "This is the parameter.";
+    Console.WriteLine(test1.GetAttr2());
 
     try
     {