static void Main()
{
Rectangle rect = new Rectangle();
RectDelegate obj = new RectDelegate(rect.GetArea);
obj += rect.GetPerimeter;
obj.Invoke(56.23, 23.45);
Console.WriteLine("\n");
//Break line
Console.WriteLine("Good Morning");
Traingle trai = new Traingle();
traiDelegate obj1 = new traiDelegate(trai.TraiArea);
obj1.Invoke(56.36, 58.56);
Console.WriteLine("\n");
Console.WriteLine("Good Morning");
TestdelegateMethod p = new TestdelegateMethod();
DelMethod del = new DelMethod(p.method_1);
// Here we have multicast
del += new DelMethod(p.method_2);
Console.WriteLine(del(50, 10));
// Here again we have multicast
del -= new DelMethod(p.method_2);
Console.WriteLine(del(20, 10));
Console.ReadKey();
}
public static void Run()
{
Console.WriteLine("Enter the Delegate value:");
int b = int.Parse(Console.ReadLine());
DelMethod delobj = new DelMethod(DelFunction);
delobj(b);
Console.ReadLine();
}
public static void Main()
{
TestDelegate td = new TestDelegate();
DelMethod AddDelegate = new DelMethod(td.Add);
DelMethod SubDelegate = new DelMethod(td.Subtract);
DelMethod MulDelegate = new DelMethod(td.Multiply);
int addAns = AddDelegate(10, 15);
int subAns = SubDelegate(40, 20);
int mulAns = MulDelegate(2, 5);
Console.WriteLine("Addition: {0}\nSubtration: {1}\nMultiplication: {}", addAns, subAns, mulAns);
}
static void Main(string[] args)
{
// A delegate is a type safe function pointer
DelMethod del = new DelMethod(Methoddel);
del("Hello Humphry");
Method2del meth2 = new Method2del(Method2);
string companyname = meth2.Invoke("Shiktech");
Console.WriteLine(companyname);
Callbacks callbacks = new Callbacks();
callbacks.Longrunningloop(Callbackmethod);
}
public Calculator(string expression)
{
this.tree = CSharpSyntaxTree.ParseText(@"using System;
namespace Calc
{
class Pars
{
public double ret(double x, double y)
{
return " + expression + @";
}
}
}
");
var compilation = CSharpCompilation.Create("pars",
new[] { tree },
new[] { MetadataReference.CreateFromFile(typeof(object).Assembly.Location) },
new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary));
var mem = new MemoryStream();
EmitResult result = compilation.Emit(mem);
if (!result.Success)
{
foreach (Diagnostic item in result.Diagnostics)
{
Console.Error.WriteLine("{0}: {1}", item.Id, item.GetMessage());
}
return;
}
mem.Seek(0, SeekOrigin.Begin);
Assembly assembly = Assembly.Load(mem.ToArray());
Type type = assembly.GetType("Calc.Pars");
ConstructorInfo constInfo = type.GetConstructors().First();
var instance = constInfo.Invoke(null);
MethodInfo method = type.GetMethod("ret");
delegat = (DelMethod)method.CreateDelegate(typeof(DelMethod), instance);
}
static void Main(string[] args)
{
MathOperations mathOperations = new MathOperations();
DelMethod delmethod = new DelMethod(mathOperations.Sum);
delmethod += new DelMethod(mathOperations.Substract); //Substract method add the chain
ForegroundColor = DarkGray;
WriteLine("***** Call the Sum and Substract methods from the chain ******");
delmethod(20, 30); ///call the Sum and Substract methods
delmethod += new DelMethod(mathOperations.Division); //Division method add the chain
delmethod += new DelMethod(mathOperations.Multiple); //Multiple method add the chain
ForegroundColor = DarkMagenta;
WriteLine("***** Call the all methods from the chain ******");
delmethod(20, 30); ///call the Sum, Substract, Multiple and Division methods
//remove the Multiple method from the chain
ForegroundColor = DarkRed;
WriteLine("***** remove the Multiple method from the chain ******");
delmethod -= new DelMethod(mathOperations.Division); //Division method add the chain
delmethod(20, 30); ///call the Sum, Substract and Division methods
ReadKey();
}
