What are events in C#?
Answers
Declaring Events
To declare an event inside a class, first a delegate type for the event must be declared. For example,
public delegate string MyDel(string str);
Next, the event itself is declared, using the event keyword −
event MyDel MyEvent;
The preceding code defines a delegate named BoilerLogHandler and an event named BoilerEventLog, which invokes the delegate when it is raised.
Example
using System;
namespace SampleApp {
public delegate string MyDel(string str);
class EventProgram {
event MyDel MyEvent;
public EventProgram() {
this.MyEvent += new MyDel(this.WelcomeUser);
}
public string WelcomeUser(string username) {
return "Welcome " + username;
}
static void Main(string[] args) {
EventProgram obj1 = new EventProgram();
string result = obj1.MyEvent("Tutorials Point");
Console.WriteLine(result);
}
}