Add Chapter7 regions

src/Chapter07/Listing07.01.DerivingOneClassFromAnother.cs

@@ -3,17 +3,20 @@
     using System;
     using System.Diagnostics.CodeAnalysis;
 
+    #region INCLUDE
     public class PdaItem
     {
         [DisallowNull]
         public string? Name { get; set; }
         public DateTime LastUpdated { get; set; }
     }
-
     // Define the Contact class as inheriting the PdaItem class
+    #region HIGHLIGHT
     public class Contact : PdaItem
+    #endregion
     {
         public string? Address { get; set; }
         public string? Phone { get; set; }
     }
+    #endregion
 }

src/Chapter07/Listing07.02.UsingInheritedMethods.cs

@@ -2,13 +2,18 @@
 {
     using Listing07_01;
 
+    #region INCLUDE
     public class Program
     {
         public static void Main()
         {
             Contact contact = new Contact();
+            #region HIGHLIGHT
             contact.Name = "Inigo Montoya";
+            #endregion
+
             // ...
         }
     }
+    #endregion
 }

src/Chapter07/Listing07.03.ClassesDerivingFromEachOtherToFormAnInheritanceChain.cs

@@ -1,5 +1,6 @@
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter07.Listing07_03
 {
+    #region INCLUDE
     public class PdaItem : object
     {
         // ...
@@ -16,4 +17,5 @@ public class Customer : Contact
     {
         // ...
     }
+    #endregion
 }

src/Chapter07/Listing07.04.ImplicitBaseTypeCasting.cs

@@ -2,19 +2,25 @@
 {
     using Listing07_03;
 
+    #region INCLUDE
     public class Program
     {
         public static void Main()
         {
             // Derived types can be implicitly converted to
             // base types
             Contact contact = new Contact();
+            #region HIGHLIGHT
             PdaItem item = contact;
+            #endregion
             // ...
 
             // Base types must be cast explicitly to derived types
+            #region HIGHLIGHT
             contact = (Contact)item;
+            #endregion
             // ...
         }
     }
+    #endregion
 }

src/Chapter07/Listing07.05.DefiningCastOperators.cs

@@ -2,17 +2,20 @@
 
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter07.Listing07_05
 {
+    #region INCLUDE
     class GPSCoordinates
     {
         // ...
 
         public static implicit operator UTMCoordinates(
             GPSCoordinates coordinates)
         {
-            // ...
+            #region EXCLUDE
             return null!; //return the new UTMCoordinates object
+            #endregion
         }
     }
+    #endregion
 
     class UTMCoordinates
     {

src/Chapter07/Listing07.06.PrivateMembersAreNotInherited.cs

@@ -5,21 +5,23 @@
 
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter07.Listing07_06
 {
-
+    #region INCLUDE
     public class PdaItem
     {
-// Justification: Disabled pending constructor
-#pragma warning disable CS8618 // Non-nullable field is uninitialized. Consider declaring as nullable.
+        #region EXCLUDE
+        // Justification: Disabled pending constructor
+        #pragma warning disable CS8618 // Non-nullable field is uninitialized. Consider declaring as nullable.
+        #endregion
         private string _Name;
-#pragma warning restore CS8618 // Non-nullable field is uninitialized. Consider declaring as nullable.
 
         public string Name
         {
             get { return _Name; }
             set { _Name = value; }
         }
-
-        // ...
+        #region EXCLUDE
+        #pragma warning restore CS8618 // Non-nullable field is uninitialized. Consider declaring as nullable.
+        #endregion
     }
 
     public class Contact : PdaItem
@@ -32,9 +34,12 @@ public class Program
         public static void Main()
         {
             Contact contact = new Contact();
-
+            #region HIGHLIGHT
             // ERROR:  'PdaItem._Name' is inaccessible
-            // contact._Name = "Inigo Montoya";  //uncomment this line and it will not compile
+            // due to its protection level
+            // contact._Name = "Inigo Montoya";
+            #endregion
         }
     }
+    #endregion
 }

src/Chapter07/Listing07.07.ProtectedMembersAreAccessibleOnlyFromDerivedClasses.cs

@@ -4,12 +4,15 @@
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter07.Listing07_07
 {
     using System;
+    #region INCLUDE
     using System.IO;
 
     public class PdaItem
     {
         public PdaItem(Guid objectKey) => ObjectKey = objectKey;
+        #region HIGHLIGHT
         protected Guid ObjectKey { get; }
+        #endregion
     }
 
     public class Contact : PdaItem
@@ -21,17 +24,23 @@ public void Save()
         {
             // Instantiate a FileStream using <ObjectKey>.dat
             // for the filename
+            #region HIGHLIGHT
             using FileStream stream = File.OpenWrite(
                 ObjectKey + ".dat");
+            #endregion
             // ...
             stream.Dispose();
         }
         static public Contact Copy(Contact contact)
+        #region HIGHLIGHT
             => new Contact(contact.ObjectKey);
+        #endregion
 
-         // static public Contact Copy(PdaItem pdaItem) =>
-            // Error: Cannot access protected member PdaItem.ObjectKey.
-            // new Contact(((Contact)pdaItem).ObjectKey);
+        // static public Contact Copy(PdaItem pdaItem) =>
+        #region HIGHLIGHT
+        // Error: Cannot access protected member PdaItem.ObjectKey.
+        // new Contact(((Contact)pdaItem).ObjectKey);
+        #endregion
     }
 
     public class Program
@@ -40,8 +49,11 @@ public static void Main()
         {
             Contact contact = new Contact(Guid.NewGuid());
 
+            #region HIGHLIGHT
             // ERROR:  'PdaItem.ObjectKey' is inaccessible
             // Console.WriteLine(contact.ObjectKey);
+            #endregion
         }
     }
+    #endregion
 }

src/Chapter07/Listing07.08.PreventingDerivationWithSealedClasses.cs

@@ -1,13 +1,15 @@
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter07.Listing07_08
 {
+    #region INCLUDE
     public sealed class CommandLineParser
     {
         // ...
     }
     // ERROR:  Sealed classes cannot be derived from
     public sealed class DerivedCommandLineParser
-    //: CommandLineParser //uncomment this line and it will not compile
+    //: CommandLineParser
     {
         // ...
     }
+    #endregion
 }

src/Chapter07/Listing07.09.OverridingAProperty.cs

@@ -3,15 +3,20 @@
 
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter07.Listing07_09
 {
+    #region INCLUDE
     public class PdaItem
     {
+        #region HIGHLIGHT
         public virtual string Name { get; set; }
+        #endregion
         // ...
     }
 
     public class Contact : PdaItem
     {
+        #region HIGHLIGHT
         public override string Name
+        #endregion
         {
             get
             {
@@ -32,4 +37,5 @@ public override string Name
 
         // ...
     }
+    #endregion
 }

src/Chapter07/Listing07.10.RuntimeCallingTheMostDerivedImplementationOfAVirtualMethod.cs

@@ -3,6 +3,7 @@ namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter07.Listing07_10
     using System;
     using Listing07_09;
 
+    #region INCLUDE
     public class Program
     {
         public static void Main()
@@ -22,4 +23,5 @@ public static void Main()
                 $"{ contact.FirstName } { contact.LastName}");
         }
     }
+    #endregion
 }

src/Chapter07/Listing07.11.OverrideVersusNewModifier.cs

@@ -1,8 +1,8 @@
-// TODO: Update listing in Manuscript
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter07.Listing07_11
 {
     using System;
 
+    #region INCLUDE
     public class Program
     {
         public class BaseClass
@@ -54,4 +54,5 @@ SuperSubDerivedClass superSubDerivedClass
             BaseClass.DisplayName();
         }
     }
+    #endregion
 }

src/Chapter07/Listing07.12.SealingMembers.cs

@@ -1,5 +1,6 @@
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter07.Listing07_12
 {
+    #region INCLUDE
     class A
     {
         public virtual void Method()
@@ -21,4 +22,5 @@ class C : B
         //{
         //}
     }
+    #endregion
 }

src/Chapter07/Listing07.13.AccessingABaseMember.cs

@@ -3,19 +3,11 @@
 
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter07.Listing07_13
 {
+    #region INCLUDE
     using static System.Environment;
 
     public class Address
     {
-        //public Address(string streetAddress, string city,
-        //    string state, string zip)
-        //{
-        //    StreetAddress = streetAddress;
-        //    City = city;
-        //    State = state;
-        //    Zip = zip;
-        //}
-
         public string StreetAddress;
         public string City;
         public string State;
@@ -34,8 +26,11 @@ public class InternationalAddress : Address
 
         public override string ToString()
         {
+            #region HIGHLIGHT
             return base.ToString() +
+            #endregion
                 NewLine + Country;
         }
     }
+    #endregion
 }

src/Chapter07/Listing07.14.SpecifyingWhichBaseConstructorToInvoke.cs

@@ -1,24 +1,26 @@
+using System;
 using System.Diagnostics.CodeAnalysis;
 
 namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter07.Listing07_14
 {
+    #region INCLUDE
     public class PdaItem
     {
         public PdaItem(string name)
         {
             Name = name;
         }
-
-        // ...
-
         public virtual string Name { get; set; }
+        // ...
     }
     public class Contact : PdaItem
     {
         // Disable warning since FirstName&LastName set via Name property 
         #pragma warning disable CS8618 // Non-nullable field is uninitialized. 
+        #region HIGHLIGHT
         public Contact(string name) :
             base(name)
+        #endregion
         {
         }
         #pragma warning restore CS8618
@@ -46,4 +48,23 @@ [NotNull] [DisallowNull]
 
         // ...
     }
+
+    public class Appointment : PdaItem
+    {
+        public Appointment(string name, string location,
+            DateTime startDateTime, DateTime endDateTime) :
+            base(name)
+        {
+            Location = location;
+            StartDateTime = startDateTime;
+            EndDateTime = endDateTime;
+        }
+
+        public DateTime StartDateTime { get; set; }
+        public DateTime EndDateTime { get; set; }
+        public string Location { get; set; }
+
+        // ...
+    }
+    #endregion
 }