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Form1.cs
Package: CSharpprogramming.rar [view]
Upload User: lxycoco
Upload Date: 2022-07-21
Package Size: 38457k
Code Size: 5k
Category:
CSharp
Development Platform:
Others
- using System;
- using System.Drawing;
- using System.Collections;
- using System.ComponentModel;
- using System.Windows.Forms;
- using System.Data;
- using System.IO;
- namespace SimpleEvent
- {
- /// <summary>
- /// Summary description for Form1.
- /// </summary>
- public class Form1 : System.Windows.Forms.Form
- {
- private System.Windows.Forms.Button btnOne;
- private System.Windows.Forms.Button btnTwo;
- private System.Windows.Forms.Label lblInfo;
- private System.Windows.Forms.Button btnRaise;
- /// <summary>
- /// Required designer variable.
- /// </summary>
- private System.ComponentModel.Container components = null;
- BusEntity _busEntity = new BusEntity();
- public delegate void ActionEventHandler(object sender, ActionCancelEventArgs ev);
- public static event ActionEventHandler Action;
- public Form1()
- {
- //
- // Required for Windows Form Designer support
- //
- InitializeComponent();
- btnOne.Click += new EventHandler(Button_Click);
- btnTwo.Click += new EventHandler(Button_Click);
- btnTwo.Click += new EventHandler(btnTwo_Click);
- btnRaise.Click += new EventHandler(btnRaise_Click);
- }
- /// <summary>
- /// Clean up any resources being used.
- /// </summary>
- protected override void Dispose( bool disposing )
- {
- if( disposing )
- {
- if (components != null)
- {
- components.Dispose();
- }
- }
- base.Dispose( disposing );
- }
- #region Windows Form Designer generated code
- /// <summary>
- /// Required method for Designer support - do not modify
- /// the contents of this method with the code editor.
- /// </summary>
- private void InitializeComponent()
- {
- this.btnOne = new System.Windows.Forms.Button();
- this.btnTwo = new System.Windows.Forms.Button();
- this.lblInfo = new System.Windows.Forms.Label();
- this.btnRaise = new System.Windows.Forms.Button();
- this.SuspendLayout();
- //
- // btnOne
- //
- this.btnOne.Location = new System.Drawing.Point(104, 88);
- this.btnOne.Name = "btnOne";
- this.btnOne.TabIndex = 0;
- this.btnOne.Text = "Button 1";
- //
- // btnTwo
- //
- this.btnTwo.Location = new System.Drawing.Point(104, 120);
- this.btnTwo.Name = "btnTwo";
- this.btnTwo.TabIndex = 1;
- this.btnTwo.Text = "Button 2";
- //
- // lblInfo
- //
- this.lblInfo.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
- this.lblInfo.Location = new System.Drawing.Point(40, 40);
- this.lblInfo.Name = "lblInfo";
- this.lblInfo.Size = new System.Drawing.Size(208, 23);
- this.lblInfo.TabIndex = 2;
- this.lblInfo.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
- //
- // btnRaise
- //
- this.btnRaise.Location = new System.Drawing.Point(104, 160);
- this.btnRaise.Name = "btnRaise";
- this.btnRaise.TabIndex = 3;
- this.btnRaise.Text = "Raise Event";
- //
- // Form1
- //
- this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
- this.ClientSize = new System.Drawing.Size(292, 203);
- this.Controls.Add(this.btnRaise);
- this.Controls.Add(this.lblInfo);
- this.Controls.Add(this.btnTwo);
- this.Controls.Add(this.btnOne);
- this.Name = "Form1";
- this.Text = "Form1";
- this.ResumeLayout(false);
- }
- #endregion
- /// <summary>
- /// The main entry point for the application.
- /// </summary>
- [STAThread]
- static void Main()
- {
- Application.Run(new Form1());
- }
- private void Button_Click(object sender, EventArgs e)
- {
- lblInfo.Text = ((Button)sender).Text + " was pressed";
- }
- private void btnTwo_Click(object sender, EventArgs e)
- {
- MessageBox.Show("This only happens in Button 2 click event");
- }
- private void btnRaise_Click(object sender, EventArgs e)
- {
- ActionCancelEventArgs cancelEvent = new ActionCancelEventArgs();
- OnAction(this, cancelEvent);
- if(cancelEvent.Cancel)
- lblInfo.Text = cancelEvent.Message;
- else
- lblInfo.Text = _busEntity.TimeString;
- }
- protected void OnAction(object sender, ActionCancelEventArgs ev)
- {
- if(Action != null)
- Action(sender, ev);
- }
- }
- public class ActionCancelEventArgs : System.ComponentModel.CancelEventArgs
- {
- string _msg = "";
- public ActionCancelEventArgs() : base() {}
- public ActionCancelEventArgs(bool cancel) : base(cancel) {}
- public ActionCancelEventArgs(bool cancel, string message) : base(cancel)
- {
- _msg = message;
- }
- public string Message
- {
- get {return _msg;}
- set {_msg = value;}
- }
- }
- }