C# (CSharp) EventsDemo ShapeEventArgs Examples

Example #1

File: Program.cs Project: zzl1010/ZhaoCode

        private void HandleShapeChanged(object sender, ShapeEventArgs e)
        {
            Shape s = (Shape)sender;

            Console.WriteLine($"收到消息，当前面积是：{e.NewArea}");
            s.Draw();
        }

Example #2

File: Program.cs Project: zzl1010/ZhaoCode

 protected virtual void OnShapeChanged(ShapeEventArgs e)
 {
     //EventHandler<ShapeEventArgs> handler = ShapeChanged;
     //if (handler != null)
     //{
     //    handler(this, e);
     //}
     ShapeChanged?.Invoke(this, e);
 }

Example #3

File: Program.cs Project: zzl1010/ZhaoCode

 protected override void OnShapeChanged(ShapeEventArgs e)
 {
     base.OnShapeChanged(e);
 }