Initial commit

ProgCSharpSrcUpdate20/Chapter 10/Makefile

+TARGETS=ex-10-01.exe ex-10-02.exe ex-10-03.exe ex-10-04.exe ex-10-05.exe ex-10-06.exe ex-10-07.exe ex-10-08.exe ex-10-09.exe
+
+BROKEN=
+
+all: $(TARGETS)
+
+BROKEN: $(BROKEN)
+
+ex-10-01.exe: ex-10-01
+	csc /debug ex-10-01
+
+ex-10-02.exe: ex-10-02
+	csc /debug ex-10-02
+
+ex-10-03.exe: ex-10-03
+	csc /debug ex-10-03
+
+ex-10-04.exe: ex-10-04
+	csc /debug ex-10-04
+
+ex-10-05.exe: ex-10-05
+	csc /debug ex-10-05
+
+ex-10-06.exe: ex-10-06
+	csc /debug ex-10-06
+
+ex-10-07.exe: ex-10-07
+	csc /debug ex-10-07
+
+ex-10-08.exe: ex-10-08
+	csc /debug ex-10-08
+
+ex-10-09.exe: ex-10-09
+	csc /debug ex-10-09
+
+test: all
+	for %%d in ($(TARGETS)) do %%d
+
+clean:
+	-del ex-10-01.pdb ex-10-02.pdb ex-10-03.pdb ex-10-04.pdb ex-10-05.pdb ex-10-06.pdb ex-10-07.pdb ex-10-08.pdb ex-10-09.pdb ex-10-01.exe ex-10-02.exe ex-10-03.exe ex-10-04.exe ex-10-05.exe ex-10-06.exe ex-10-07.exe ex-10-08.exe ex-10-09.exe

ProgCSharpSrcUpdate20/Chapter 10/ex-10-01 strings

+// Example 10-01: Working with strings
+
+namespace Programming_CSharp
+{
+   using System;
+
+   public class StringTester
+   {
+      static void Main(  )
+      {
+         // create some strings to work with
+         string s1 = "abcd";
+         string s2 = "ABCD";
+         string s3 = @"Liberty Associates, Inc.
+                provides custom .NET development,
+                on-site Training and Consulting";
+
+         int result;  // hold the results of comparisons
+
+         // compare two strings, case sensitive
+         result = string.Compare(s1, s2);
+         Console.WriteLine(
+            "compare s1: {0}, s2: {1}, result: {2}\n",
+            s1, s2, result);
+
+         // overloaded compare, takes boolean "ignore case"
+         //(true = ignore case)
+         result = string.Compare(s1,s2, true);
+         Console.WriteLine("compare insensitive\n");
+         Console.WriteLine("s4: {0}, s2: {1}, result: {2}\n",
+            s1, s2, result);
+
+         // concatenation method
+         string s6 = string.Concat(s1,s2);
+         Console.WriteLine(
+            "s6 concatenated from s1 and s2: {0}", s6);
+
+         // use the overloaded operator
+         string s7 = s1 + s2;
+         Console.WriteLine(
+            "s7 concatenated from s1 + s2: {0}", s7);
+
+         // the string copy method
+         string s8 = string.Copy(s7);
+         Console.WriteLine(
+            "s8 copied from s7: {0}", s8);
+
+         // use the overloaded operator
+         string s9 = s8;
+         Console.WriteLine("s9 = s8: {0}", s9);
+
+         // three ways to compare.
+         Console.WriteLine(
+            "\nDoes s9.Equals(s8)?: {0}",
+            s9.Equals(s8));
+         Console.WriteLine(
+            "Does Equals(s9,s8)?: {0}",
+            string.Equals(s9,s8));
+         Console.WriteLine(
+            "Does s9==s8?: {0}", s9 == s8);
+
+         // Two useful properties: the index and the length
+         Console.WriteLine(
+            "\nString s9 is {0} characters long. ",
+            s9.Length);
+         Console.WriteLine(
+            "The 5th character is {1}\n",
+            s9.Length, s9[4]);
+
+         // test whether a string ends with a set of characters
+         Console.WriteLine("s3:{0}\nEnds with Training?: {1}\n",
+            s3,
+            s3.EndsWith("Training") );
+         Console.WriteLine(
+            "Ends with Consulting?: {0}",
+            s3.EndsWith("Consulting"));
+
+         // return the index of the substring
+         Console.WriteLine(
+            "\nThe first occurrence of Training ");
+         Console.WriteLine ("in s3 is {0}\n",
+            s3.IndexOf("Training"));
+
+         // insert the word excellent before "training"
+         string s10 = s3.Insert(101,"excellent ");
+         Console.WriteLine("s10: {0}\n",s10);
+
+         // you can combine the two as follows:
+         string s11 = s3.Insert(s3.IndexOf("Training"),
+            "excellent ");
+         Console.WriteLine("s11: {0}\n",s11);
+      }
+   }
+}
+

ProgCSharpSrcUpdate20/Chapter 10/ex-10-02 Substring

+// Example 10-02: Using the Substring() method
+
+namespace Programming_CSharp
+{
+   using System;
+   using System.Text;
+    
+   public class StringTester
+   {
+      static void Main()
+      {
+         // create some strings to work with
+         string s1 = "One Two Three Four"; 
+
+         int ix;
+
+          // get the index of the last space
+         ix=s1.LastIndexOf(" ");
+            
+         // get the last word.
+         string s2 = s1.Substring(ix+1); 
+            
+         // set s1 to the substring starting at 0
+         // and ending at ix (the start of the last word
+         // thus s1 has one two three
+         s1 = s1.Substring(0,ix);    
+       
+         // find the last space in s1 (after two)
+         ix = s1.LastIndexOf(" ");
+
+         // set s3 to the substring starting at 
+         // ix, the space after "two" plus one more
+         // thus s3 = "three"
+         string s3 = s1.Substring(ix+1);
+
+         // reset s1 to the substring starting at 0
+         // and ending at ix, thus the string "one two"
+         s1 = s1.Substring(0,ix);
+
+         // reset ix to the space between 
+         // "one" and "two"
+         ix = s1.LastIndexOf(" ");
+
+         // set s4 to the substring starting one
+         // space after ix, thus the substring "two"
+         string s4 = s1.Substring(ix+1);
+
+         // reset s1 to the substring starting at 0
+         // and ending at ix, thus "one"
+         s1 = s1.Substring(0,ix);
+
+         // set ix to the last space, but there is 
+         // none so ix now = -1
+         ix = s1.LastIndexOf(" ");
+
+         // set s5 to the substring at one past
+         // the last space. there was no last space
+         // so this sets s5 to the substring starting
+         // at zero
+         string s5 = s1.Substring(ix+1);
+            
+         Console.WriteLine ("s2: {0}\ns3: {1}",s2,s3);
+         Console.WriteLine ("s4: {0}\ns5: {1}\n",s4,s5);
+         Console.WriteLine ("s1: {0}\n",s1);
+
+      }
+   }
+}

ProgCSharpSrcUpdate20/Chapter 10/ex-10-03 Split

+// Example 10-03: Using the Split() method
+
+namespace Programming_CSharp
+{
+   using System;
+   using System.Text;
+    
+   public class StringTester
+   {
+      static void Main()
+      {
+         // create some strings to work with
+         string s1 = "One,Two,Three Liberty Associates, Inc."; 
+
+         // constants for the space and comma characters
+         const char Space = ' ';
+         const char Comma = ',';
+    
+         // array of delimiters to split the sentence with
+         char[] delimiters = new char[] 
+            {
+               Space,
+               Comma
+            };
+
+         string output = "";
+         int ctr = 1;
+
+         // split the string and then iterate over the
+         // resulting array of strings
+         foreach (string subString in s1.Split(delimiters))
+         {
+            output += ctr++;
+            output += ": ";
+            output += subString;
+            output += "\n";
+         }
+         Console.WriteLine(output);
+      }
+   }
+}

ProgCSharpSrcUpdate20/Chapter 10/ex-10-04 StringBuilder

+// Example 10-04: Using a StringBuilder
+
+namespace Programming_CSharp
+{
+   using System;
+   using System.Text;
+    
+   public class StringTester
+   {
+      static void Main()
+      {
+         // create some strings to work with
+         string s1 = "One,Two,Three Liberty Associates, Inc."; 
+
+         // constants for the space and comma characters
+         const char Space = ' ';
+         const char Comma = ',';
+    
+         // array of delimiters to split the sentence with
+         char[] delimiters = new char[] 
+         {
+               Space,
+               Comma
+         };
+
+         // use a StringBuilder class to build the
+         // output string
+         StringBuilder output = new StringBuilder();
+         int ctr = 1;
+
+         // split the string and then iterate over the
+         // resulting array of strings
+         foreach (string subString in s1.Split(delimiters))
+         {
+            // AppendFormat appends a formatted string
+            output.AppendFormat("{0}: {1}\n",ctr++,subString);            
+         }
+         Console.WriteLine(output);
+      }
+   }
+}

ProgCSharpSrcUpdate20/Chapter 10/ex-10-05 Regex

+// Example 10-05: Using the Regex class for regular expressions
+
+
+
+namespace Programming_CSharp
+{
+   using System;
+   using System.Text;
+   using System.Text.RegularExpressions;
+
+   public class Tester
+   {
+      static void Main(  )
+      {
+         string s1 =
+            "One,Two,Three Liberty Associates, Inc.";
+         Regex theRegex = new Regex(" |, |,");
+         StringBuilder sBuilder = new StringBuilder(  );
+         int id = 1;
+
+         foreach (string subString in theRegex.Split(s1))
+         {
+            sBuilder.AppendFormat(
+               "{0}: {1}\n", id++, subString);
+         }
+         Console.WriteLine("{0}", sBuilder);
+      }
+   }
+}

ProgCSharpSrcUpdate20/Chapter 10/ex-10-06 static Regex

+// Example 10-06: Using static Regex.Split()
+
+namespace Programming_CSharp
+{
+   using System;
+   using System.Text;
+   using System.Text.RegularExpressions;
+
+   public class Tester
+   {
+      static void Main(  )
+      {
+         string s1 =
+            "One,Two,Three Liberty Associates, Inc.";
+         StringBuilder sBuilder = new StringBuilder(  );
+         int id = 1;
+         foreach (string subStr in Regex.Split(s1," |, |,"))
+         {
+            sBuilder.AppendFormat("{0}: {1}\n", id++, subStr);
+         }
+         Console.WriteLine("{0}", sBuilder);
+      }
+   }
+}
+

ProgCSharpSrcUpdate20/Chapter 10/ex-10-07 MatchCollection and Match

+// Example 10-07: Using MatchCollection and Match
+
+namespace Programming_CSharp
+{
+   using System;
+   using System.Text.RegularExpressions;
+
+   class Test
+   {
+      public static void Main()
+      {
+         string string1 = "This is a test string";
+            
+         // find any nonwhitespace followed by whitespace
+         Regex theReg = new Regex(@"(\S+)\s");
+        
+         // get the collection of matches
+         MatchCollection theMatches = 
+            theReg.Matches(string1);
+
+         // iterate through the collection
+         foreach (Match theMatch in theMatches)
+         {
+            Console.WriteLine(
+               "theMatch.Length: {0}", theMatch.Length);
+
+            if (theMatch.Length != 0)               
+            {
+               Console.WriteLine("theMatch: {0}", 
+                  theMatch.ToString());              
+            }       
+         }           
+      }               
+   }                   
+}             
+
+

ProgCSharpSrcUpdate20/Chapter 10/ex-10-08 Group class

+// Example 10-08: Using the Group class
+
+namespace Programming_CSharp
+{
+    using System;
+    using System.Text.RegularExpressions;
+
+    class Test
+    {
+        public static void Main()
+        {
+            string string1 = "04:03:27 127.0.0.0 LibertyAssociates.com";
+            
+            // group time = one or more digits or colons followed by space
+            Regex theReg = new Regex(@"(?<time>(\d|\:)+)\s" +            
+            // ip address = one or more digits or dots followed by  space
+            @"(?<ip>(\d|\.)+)\s" + 
+            // site = one or more characters
+            @"(?<site>\S+)"); 
+            
+            // get the collection of matches
+            MatchCollection theMatches = theReg.Matches(string1);
+
+            // iterate through the collection
+            foreach (Match theMatch in theMatches)
+            {
+                if (theMatch.Length != 0)               
+                {
+                    Console.WriteLine("\ntheMatch: {0}", 
+                        theMatch.ToString());          
+                    Console.WriteLine("time: {0}", 
+                        theMatch.Groups["time"]);
+                    Console.WriteLine("ip: {0}",
+                        theMatch.Groups["ip"]);
+                    Console.WriteLine("site: {0}",
+                        theMatch.Groups["site"]);
+                }       
+            }           
+        }               
+    }                   
+}                       

ProgCSharpSrcUpdate20/Chapter 10/ex-10-09 capture collection

+// Example 10-09: Examining the capture collection
+
+namespace Programming_CSharp
+{
+   using System;
+   using System.Text.RegularExpressions;
+
+   class Test
+   {
+      public static void Main()
+      {
+         // the string to parse
+         // note that names appear in both 
+         // searchable positions
+         string string1 = 
+            "04:03:27 Jesse 0.0.0.127 Liberty ";
+            
+         // regular expression which groups company twice
+         Regex theReg = new Regex(@"(?<time>(\d|\:)+)\s" +
+            @"(?<company>\S+)\s" +
+            @"(?<ip>(\d|\.)+)\s" + 
+            @"(?<company>\S+)\s");
+        
+         // get the collection of matches
+         MatchCollection theMatches = 
+            theReg.Matches(string1);
+
+         // iterate through the collection
+         foreach (Match theMatch in theMatches)
+         {
+            if (theMatch.Length != 0)               
+            {
+               Console.WriteLine("theMatch: {0}", 
+                  theMatch.ToString());          
+               Console.WriteLine("time: {0}", 
+                  theMatch.Groups["time"]);
+               Console.WriteLine("ip: {0}", 
+                  theMatch.Groups["ip"]);
+               Console.WriteLine("Company: {0}",
+                  theMatch.Groups["company"]);
+
+               // iterate over the captures collection 
+               // in the company group within the 
+               // groups collection in the match
+               foreach (Capture cap in 
+                  theMatch.Groups["company"].Captures)
+               {
+                  Console.WriteLine("cap: {0}",cap.ToString());
+               }
+            }       
+         }           
+      }               
+   }                   
+}  

ProgCSharpSrcUpdate20/Chapter 11/Makefile

+TARGETS=ex-11-01.exe ex-11-02.exe ex-11-03.exe ex-11-04.exe ex-11-05.exe ex-11-06.exe ex-11-07.exe ex-11-08.exe
+
+BROKEN=
+
+all: $(TARGETS)
+
+BROKEN: $(BROKEN)
+
+ex-11-01.exe: ex-11-01
+	csc /debug ex-11-01
+
+ex-11-02.exe: ex-11-02
+	csc /debug ex-11-02
+
+ex-11-03.exe: ex-11-03
+	csc /debug ex-11-03
+
+ex-11-04.exe: ex-11-04
+	csc /debug ex-11-04
+
+ex-11-05.exe: ex-11-05
+	csc /debug ex-11-05
+
+ex-11-06.exe: ex-11-06
+	csc /debug ex-11-06
+
+ex-11-07.exe: ex-11-07
+	csc /debug ex-11-07
+
+ex-11-08.exe: ex-11-08
+	csc /debug ex-11-08
+
+test: all
+	for %%d in ($(TARGETS)) do %%d
+
+clean:
+	-del ex-11-01.pdb ex-11-02.pdb ex-11-03.pdb ex-11-04.pdb ex-11-05.pdb ex-11-06.pdb ex-11-07.pdb ex-11-08.pdb ex-11-01.exe ex-11-02.exe ex-11-03.exe ex-11-04.exe ex-11-05.exe ex-11-06.exe ex-11-07.exe ex-11-08.exe

ProgCSharpSrcUpdate20/Chapter 11/ex-11-01 Throwing an exception

+// Example 11-01: Throwing an exception
+// Caution: throws an unhandled exception!
+
+namespace Programming_CSharp
+{
+    using System;
+
+    public class Test
+    {
+        public static void Main()
+        {
+            Console.WriteLine("Enter Main...");
+            Test t = new Test();
+            t.Func1();
+            Console.WriteLine("Exit Main...");           
+
+        }
+
+        public void Func1()
+        {
+            Console.WriteLine("Enter Func1...");
+            Func2();
+            Console.WriteLine("Exit Func1...");           
+        }
+
+        public void Func2()
+        {
+            Console.WriteLine("Enter Func2...");
+            throw new System.Exception();
+            Console.WriteLine("Exit Func2...");
+        }
+    }
+}
+

ProgCSharpSrcUpdate20/Chapter 11/ex-11-02 Catching an exception

+// Example 11-02: Catching an exception
+
+namespace Programming_CSharp
+{
+    using System;
+
+    public class Test
+    {
+        public static void Main()
+        {
+            Console.WriteLine("Enter Main...");
+            Test t = new Test();
+            t.Func1();
+            Console.WriteLine("Exit Main...");           
+
+        }
+
+        public void Func1()
+        {
+            Console.WriteLine("Enter Func1...");
+            Func2();
+            Console.WriteLine("Exit Func1...");           
+        }
+
+        public void Func2()
+        {
+            Console.WriteLine("Enter Func2...");
+            try
+            {
+                Console.WriteLine("Entering try block...");
+                throw new System.Exception();                
+                Console.WriteLine("Exiting try block...");
+            }
+            catch
+            {
+                Console.WriteLine(
+                  "Exception caught and handled.");
+            }
+            Console.WriteLine("Exit Func2...");
+        }
+    }
+}

ProgCSharpSrcUpdate20/Chapter 11/ex-11-03 Catch in a calling function

+// Example 11-03: Catch in a calling function
+
+namespace Programming_CSharp
+{
+    using System;
+
+    public class Test
+    {
+        public static void Main()
+        {
+            Console.WriteLine("Enter Main...");
+            Test t = new Test();
+            t.Func1();
+            Console.WriteLine("Exit Main...");           
+
+        }
+
+        public void Func1()
+        {
+            Console.WriteLine("Enter Func1...");
+            try
+            {
+                Console.WriteLine("Entering try block...");
+                Func2();
+                Console.WriteLine("Exiting try block...");
+            }
+            catch
+            {
+                Console.WriteLine(
+                   "Exception caught and handled.");
+            }
+
+            Console.WriteLine("Exit Func1...");           
+        }
+
+        public void Func2()
+        {
+            Console.WriteLine("Enter Func2...");
+            throw new System.Exception();                
+            Console.WriteLine("Exit Func2...");
+        }
+    }
+}

ProgCSharpSrcUpdate20/Chapter 11/ex-11-04 Specifying the exception

+// Example 11-04: Specifying the exception to catch
+
+namespace Programming_CSharp
+{
+    using System;
+
+    public class Test
+    {