fix: Minor updates

Author: BenjaminMichaelis

src/Chapter20/Listing20.02.AsynchronousWebRequest.cs

@@ -3,7 +3,6 @@ namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter20.Listing20_02;
 #region INCLUDE
 using System;
 using System.IO;
-using System.Net;
 using System.Runtime.ExceptionServices;
 using System.Threading.Tasks;
 
@@ -48,7 +47,6 @@ public static void Main(string[] args)
                         textOccurrenceCount} times at URL '{url}'.");
 
             });
-
         try
         {
             while (!task.Wait(100))

src/Chapter20/Listing20.14.SynchronousHighLatencyInvocationInWPF.cs

@@ -16,8 +16,3 @@ private void PingButton_Click(
         #endregion INCLUDE
     }
 }
-
-
-
-
-

src/Chapter20/Listing20.15.SynchronousHighLatencyInvocationInWPFUsingAwait.cs

@@ -18,11 +18,5 @@ private async void PingButton_Click(
             StatusLabel.Text = pingReply.Status.ToString();
         }
         #endregion INCLUDE
-
     }
 }
-
-
-
-
-

src/Chapter21/Listing21.01.SynchronousPiSections.cs

@@ -13,7 +13,7 @@ public static void Main()
     {
         string pi = "";
         const int iterations = TotalDigits / BatchSize;
-        for(int i = 0; i < iterations; i++)
+        for (int i = 0; i < iterations; i++)
         {
             pi += PiCalculator.Calculate(
                 BatchSize, i * BatchSize);
@@ -41,8 +41,3 @@ public static string Calculate(
 */
 #endregion EXCLUDE
 #endregion INCLUDE
-
-
-
-
-

src/Chapter21/Listing21.02.ParallelPiCalculation.cs

@@ -32,8 +32,3 @@ public static void Main()
     }
 }
 #endregion INCLUDE
-
-
-
-
-

src/Chapter21/Listing21.04.UnhandledExceptionsParallelIterations.cs

@@ -36,7 +36,7 @@ static void EncryptFiles(
             Console.WriteLine(
                 "ERROR: {0}:",
                 exception.GetType().Name);
-            foreach(Exception item in
+            foreach (Exception item in
             #region HIGHLIGHT
                 exception.InnerExceptions)
             #endregion HIGHLIGHT
@@ -56,8 +56,3 @@ private static void Encrypt(string fileName)
     #endregion EXCLUDE
 }
 #endregion INCLUDE
-
-
-
-
-