static void Main(string[] args)
{
Console.WriteLine("Chap1");
Console.WriteLine(AppDomain.CurrentDomain.FriendlyName);
//Lession 1: value types
double d1 = 2.5;
int i1 = 5555;
int i2 = i1;
i1 = 22;
Console.WriteLine("i1 = {0}", i1);
Console.WriteLine("i2 = {0}", i2);
string s1 = "spam";
object o1, o2, o3;
o1 = d1;
o2 = i1;
o3 = s1;
Console.WriteLine(o1.GetType().FullName);
Console.WriteLine(o2.GetType().FullName);
Console.WriteLine(o3.GetType().FullName);
bool b1 = true;
bool? b2 = true;
Nullable <bool> b3 = new Nullable <bool>();
Console.WriteLine("bool b1 is:{0}", b1.ToString());
Console.WriteLine("bool b3 is null? {0}", b3 == null);
Console.WriteLine("bool b2 is null? {0}", b2 == null);
Console.WriteLine("bool b2 has a value? {0}", b2.HasValue.ToString());
Console.WriteLine("Bool b3 has a value? {0}", b3.HasValue.ToString());
ValChange v = new ValChange();
v.Date = DateTime.Now;
v.Value = 5.4432;
Console.WriteLine("ValChange v =:" + v.ToString());
//enums
TestEnum te = TestEnum.Frau;
Console.WriteLine("Test enum is equal to Mau:{0}", te == TestEnum.Mau);
//strings & string builders
string s2, s3, s4;
s1 = "matt";
s2 = "test";
s3 = "spam";
s3.Replace("pa", "ki");
s4 = s1;
s1 = "abby";
Console.WriteLine("string s1=" + s1);
Console.WriteLine("string s2=" + s2);
Console.WriteLine("string s3=" + s3);
Console.WriteLine("string s4=" + s4);
StringBuilder sb = new StringBuilder();
sb.Append(s1);
sb.Append(" | ");
sb.Append(s2);
sb.Append(" | ");
sb.Append(s3);
sb.Append(" | ");
sb.Append(s4);
Console.WriteLine("String builder sb:" + sb.ToString());
sb.Replace("pa", "ki");
Console.WriteLine("String builder sb:" + sb.ToString());
//arrays
int[] ar = { 3, 2, 1 };
Array.Sort(ar);
Console.WriteLine("{0}, {1}, {2}", ar[0], ar[1], ar[2]);
//streams
System.IO.StreamWriter sw = new System.IO.StreamWriter("text.txt");
sw.WriteLine("Hello Totalflow!");
sw.Close();
System.IO.StreamReader sr = new System.IO.StreamReader("text.txt");
Console.WriteLine(sr.ReadToEnd());
sr.Close();
//exceptions
try
{
throw new TFBigException();
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
}
try
{
throw new TFException();
}
catch (TFBigException ex1)
{
Console.WriteLine(ex1.ToString());
}
catch (TFException ex2)
{
Console.WriteLine(ex2.ToString());
}
//inheritance
Test1 t1 = new Test2();
Console.WriteLine(t1.ToString());
Console.WriteLine(t1.foobar().ToString());
//interface
Test3 t3 = new Test3();
IComparable t3i = t3;
Console.WriteLine("T3 IComparable interface:{0}", t3i.CompareTo(new object()));
Test2 t2 = new Test2();
Console.WriteLine("T2 IComparable interface v1:{0}", t2.CompareTo(new Test2()));
IComparable t2i = t2;
Console.WriteLine("T2 IComparable interface v2:{0}", t2i.CompareTo(new Test2()));
//partial classes
//generics
List <DateTime> ldt = new List <DateTime>();
ldt.Add(new DateTime(2005, 12, 11));
ldt.Add(new DateTime(2006, 4, 25));
Console.WriteLine("generic list ldt contains 1/1/2222:" + ldt.Contains(new DateTime(2222, 1, 1)).ToString());
Console.WriteLine("generic list ldt contains 4/25/2006:" + ldt.Contains(new DateTime(2006, 4, 25)).ToString());
Console.WriteLine("Generic method MyGenMethod {0}", MyGenMethod <Test3>(t3).ToString());
Gen1 <Test3, ValChange> g1 = new Gen1 <Test3, ValChange>(t3, v);
Console.WriteLine("Generic class g1 to string:" + g1.ToString());
//events
GetMessage += new MyDelegate(Program_GetMessage);
Console.WriteLine("Getmessage returns {0}", GetMessage("Here we are!"));
GetMessage += new MyDelegate(Program_GetMessage1);
Console.WriteLine("Getmessage returns {0}", GetMessage("Here we are!"));
//attributes
//type forwarding
//conversion
//boxing & unboxing
//conversion implmentation
MyInt a1;
a1.Value = 44;
Int64 i64 = Convert.ToInt64(a1);
b1 = Convert.ToBoolean(a1);
MyIntStruct a; int b;
a = 45;
b = (int)a;
Console.WriteLine("a = {0} , b ={1}", a.ToString(), b.ToString());
}
