Another use for event properties covers the situation where you are implementing two interfaces, each with an event of the same name. In such a case, you must use an explicit implementation event property.
However, when explicitly implementing events in interface, you need to provide add and remove methods.
Example
public delegate void Delegate1();
public delegate int Delegate2(string s);
public interface I1
{
event Delegate1 TestEvent;
}
public interface I2
{
event Delegate2 TestEvent;
}
public class ExplicitEventsSample : I1, I2
{
public event Delegate1 TestEvent; // normal implementation of I1.TestEvent.
private Delegate2 TestEvent2Storage; // underlying storage for I2.TestEvent.
event Delegate2 I2.TestEvent // explicit implementation of I2.TestEvent.
{
add
{
TestEvent2Storage += value;
}
remove
{
TestEvent2Storage -= value;
}
}
private void FireEvents()
{
if (TestEvent != null)
{
TestEvent();
}
if (TestEvent2Storage != null)
{
TestEvent2Storage("hello");
}
}
}
See Also