public void Test(Point p, Form f)
{
p.x1 = 100; // No effect on MyPoint since p is a copy
f.x1 = 200; // This will change myForm’s caption since
// myForm and f point to the same object
f = null; // No effect on myForm
}
public void Test2(ref Point p, ref Form f)
{
p.x1 = 100;
f.x1 = 200; // This will change myForm’s caption since
// myForm and f point to the same object
f = null; // effect on myForm
}
public static void Main()
{
// Delegate with Anonymous
CAreaPointer area = r => 3.14 * r * r;
double Area = area(2);
// Func Delegate
Func<double,int,double> area2 = (r,p) => 3.14 * r * r + p;
double Area2 = area2(2,1);
//Action Delegate does not return anything
Action<string> mystring = y7 => Console.WriteLine(y7);
mystring("Hello");
//Predicate Delegate is an extension of Func delegate and return always bool value
Predicate<string> mystring2 = y8 => y8.Length > 2;
mystring2("Hello");
Nullable<DateTime> dateSample2;
int? test = null;
Dictionary<int, string> st = new Dictionary<int, string>();
// st.Add(23, 23);
st.Add(25, "stete");
string returnenum = Enum.Parse((typeof(Module)), "sun").ToString();
Form mynewform = new Form();
class1 cne = mynewform;
Console.WriteLine(cne.GetType());
int x23 = 10;
Action<int> addToX = new Action<int>(delegate(int y23)
{
x23 = x23 + y23;
}
);
addToX(10);
Console.WriteLine(x23);
Console.WriteLine("abcd" + 5.ToString());
//var x = 5;
//if(x==='5')
//{
// Console.WriteLine("abcd" );
//}
try
{
Console.WriteLine("before exception");
throw new Exception("new expresion");
throw new Exception("after exception");
}
catch
{
Console.WriteLine("catch");
}
finally
{
Console.WriteLine("fianllly");
}
Console.WriteLine("After finally");
List<Person> people = new List<Person>() { new Person { Age = 12 }, new Person { Age = 22 }, new Person {Age =10} };
// people.Sort(x5, y5) => x5.Age.CompareTo(y5.Age));
List<int> nums = new List<int>() { 5, 2, 3, 1, 4 };
nums.Sort();
foreach (var item in nums)
{
if (item == 3)
nums.Remove(item);
}
var person = from peoples in people
where peoples.Age > 18
select peoples;
//people.Where(x1 => x1.Age > 18).FirstOrDefault();
// IQueryable<Person> people2 = people.ToList<Person>();
// Person person2 = people2.Where(x => x.Age > 18).FirstOrDefault();
//I1 newint = new Drived2();
//newint.test();
Base base2 = new Derived();
base2.TestJoins();
// int vars = null;
Derived derived2 = new Drived2();
derived2.Method();
base2.NewMethod();// displays 'base Method'
Point myPoint = new Point(); // a new value-type variable
Form myForm = new Form(); // a new reference-type variable
MyClient myclient = new MyClient();
myclient.Test(myPoint, myForm); // Test is a method defined below
myclient.Test2(ref myPoint, ref myForm); // Test is a method defined below
class1 c1, c2;
c1 = new class1();
c1.x1 = 30;
c2 = c1;
c2.x1 = 40;
c2 = null;
Console.WriteLine(c1.x1);
int x, y;
object a, b;
x = 22;
y = x;
y = 12;
Console.WriteLine(x);
// a = 11;
// b = a;
// b = 33; // No idea why a is not changing its value
// b = null;
// a = b;
// Console.WriteLine(a);
string str = "foofoo";
str.Replace("foo", "FOO");
str = str.Replace("foo", "FOO");
a = (object)x;
b = a;
b = 33; // No idea why a is not changing its value
a = b;
Console.WriteLine(a);
a = (object)x;
b = a;
b = null;
// a = b;
Console.WriteLine(a);
string s1, s2;
s1 = "test";
s2 = s1;
s2 = "Test2";
Console.WriteLine(s1);
//DateTime? dateval = null;
//using (Base c = new Base())
//{
// int var1=2, var2, var3 = 0;
// throw new Exception();
// var2 = var1 / var3;
//}
//Console.WriteLine(12.2 + 34 + "A");
//Console.WriteLine("A"+ 12.2 + 34);
//List<int> t = new List<int> { 9, 5, 6, 7 };
// Derived d1 = new Derived();
// d1.Method();// displays 'drived Method'
// //Base b = new Derived();
// //b.Method();// displays 'base Method'
//// Derived d2;
//// d2 = new Base(); // Compile time Error
////((Base) d2).Method();
// Base b1 = new Base();
// b1.Method();// displays 'base Method' if base method is not virtaul
}
