Get Event sender in event handler : System Event « Event « C# / C Sharp

Home
C# / C Sharp
1.2D Graphics
2.Class Interface
3.Collections Data Structure
4.Components
5.Data Types
6.Database ADO.net
7.Design Patterns
8.Development Class
9.Event
10.File Stream
11.Generics
12.GUI Windows Form
13.Language Basics
14.LINQ
15.Network
16.Office
17.Reflection
18.Regular Expressions
19.Security
20.Services Event
21.Thread
22.Web Services
23.Windows
24.Windows Presentation Foundation
25.XML
26.XML LINQ
C# / C Sharp by API
C# / CSharp Tutorial
C# / CSharp Open Source
C# / C Sharp » Event » System EventScreenshots 
Get Event sender in event handler
 

using System;
using System.Drawing;
using System.Windows.Forms;
   
class TwoButtons: Form
{
     readonly Button btnLarger, btnSmaller;
     readonly int    cxBtn, cyBtn, dxBtn;
   
     public static void Main()
     {
          Application.Run(new TwoButtons());
     }
     public TwoButtons()
     {
          ResizeRedraw = true;
   
          cxBtn = 200;
          cyBtn = 100;
          dxBtn = 12;
   
          btnLarger = new Button();
          btnLarger.Parent = this;
          btnLarger.Text   = "&Larger";
          btnLarger.Size   = new Size(cxBtn, cyBtn);
          btnLarger.Click += new EventHandler(ButtonOnClick);
   
          btnSmaller = new Button();
          btnSmaller.Parent = this;
          btnSmaller.Text   = "&Smaller";
          btnSmaller.Size   = new Size(cxBtn, cyBtn);
          btnSmaller.Click += new EventHandler(ButtonOnClick);
   
          OnResize(EventArgs.Empty);
     }
     protected override void OnResize(EventArgs ea)
     {
          base.OnResize(ea);
   
          btnLarger.Location =
                         new Point(ClientSize.Width / - cxBtn - dxBtn / 2,
                                  (ClientSize.Height - cyBtn2);
          btnSmaller.Location =
                         new Point(ClientSize.Width / + dxBtn / 2,
                                  (ClientSize.Height - cyBtn2);
     }
     void ButtonOnClick(object obj, EventArgs ea)
     {
          Button btn = (Buttonobj;
   
          if (btn == btnLarger)
          {
               Left   -= (int)(0.1 * Width);
               Top    -= (int)(0.1 * Height);
               Width  += (int)(0.1 * Width);
               Height += (int)(0.1 * Height);
          }
          else
          {
               Left   += (int)(Width  / 22f);
               Top    += (int)(Height / 22f);
               Width  -= (int)(Width  / 11f);
               Height -= (int)(Height / 11f);
          }
     }
}

 
Related examples in the same category
1.System Events: User Preference ChangedSystem Events: User Preference Changed
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.