// UseTheDel -- A “workhorse” method that takes a MyDelType delegate
// argument and invokes the delegate. arg is a string I want to pass
// to the delegate invocation.
private static void UseTheDel(MyDelType del, string arg)
{
if (del == null) return; // Don't invoke a null delegate!
// Here's where you invoke the delegate.
// What's written here? A number representing the length of arg.
Console.WriteLine("UseTheDel writes {0}", del(arg));
}
// UseTheDel -- A workhorse method that takes a MyDelType delegate
// argument and invokes the delegate; arg is a string to pass to the
// delegate invocation
private static void UseTheDel(MyDelType del, string arg)
{
if (del == null)
{
return; // Don't invoke a null delegate
}
// Here's where the delegate is invoked
Console.WriteLine("UseTheDel writes {0}", del(arg));
}
// UseTheDel - A "workhorse" method that takes a MyDelType delegate
// argument and invokes the delegate. name is a string I want to pass
// to the delegate invocation.
private static void UseTheDel(MyDelType del, string arg)
{
if (del == null)
{
return; // Don't invoke a null delegate!
}
// Here's where we invoke the delegate.
// What's written here? A number representing the length of name.
Console.WriteLine("UseTheDel writes {0}", del(arg));
}
public static void Main(string[] args)
{
// Create a delegate instance pointing to the CallBackMethod below;
// note that the callback method is static, so you can prefix the
// name with the class name, Program
MyDelType del = new MyDelType(Program.CallBackMethod);
// Call a method that will invoke the delegate
UseTheDel(del, "hello");
}
// Inside class or inside namespace
static void Main(string[] args)
{
// Create a delegate instance pointing to the CallBackMethod below.
// Note that the callback method is static, so you prefix the name
// with the class name, Program.
MyDelType del = new MyDelType(Program.CallBackMethod);
// Call a method that will invoke the delegate.
UseTheDel(del, "hello");
// Wait for user to acknowledge results.
Console.WriteLine("Press Enter to terminate...");
Console.Read();
}
delegate int MyDelType(string name); // ... or here, nested in the class.
static void Main(string[] args)
{
// Create a delegate instance pointing to the CallBackMethod below.
// Note that the callback method is static, so we prefix the name
// with the class name, Program.
MyDelType del = new MyDelType(Program.CallBackMethod);
// Call a method that will invoke the delegate.
UseTheDel(del, "hello");
// Wait for user to acknowledge results.
Console.WriteLine("Press Enter to terminate...");
Console.Read();
}
