} //method that prints hello1
public DelegatesExamples()
{
//normal delegate, define as a member
testDel del = attachMethod;
del.Invoke("hello1");
//anonymous delegate
testDel aDel = x => Console.WriteLine(x + " from annoy");
aDel.Invoke("hello2");
//builtin Action delegate
Action <string> actDel;
actDel = x => Console.WriteLine("Action " + x);
actDel.Invoke("hello3");
//builtin Func delegate, x="1". Return type is int. Param is a string.
Func <string, int> funcDel;
funcDel = x => Int32.Parse(x + x); //auto returns
var gets = funcDel.Invoke("1");
Console.WriteLine("Func " + gets);
//builtin Predicate delegate, can only return bool
Predicate <string> predDel;
predDel = x => x == "helloworld";
var isTrue = predDel.Invoke("helloworld");
}
static void Demo1()
{
testDel a = Func1;
a += Func2;
a("test");
}
static void Demo3()
{
Method(Func1);
testDel a = Func1;
a += Func2;
Method(a);
}
static void Main(string[] args)
{
StaticDelegateDeom();
InstanceDelegateDemo();
ChainDelegateDemo1(new Program());
ChainDelegateDemo2(new Program());
testDel td = new testDel(testM);
}
void run()
{
testDel td = new testDel(test);
if (this.textBox2.InvokeRequired)
{
this.Invoke(td);
}
else
{
test();
}
}
public IHttpActionResult Get(int id)
{
testDel delItems = x => x * x;
return(Ok(delItems(id)));
}
static void Method(testDel a)
{
Console.WriteLine("it is my method");
a("jdljlfj");
}
static void Demo()
{
testDel a = Func1;
a("test");
}