Csharp/C Sharp/Event/UI Event

Add mouse click event to a Label

using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
   Label Label1;
   TextBox TextBox1;
   Button Button1;
  public Form1()
  {
        InitializeComponent();
  }
   private void ctrlClick(System.Object sender, EventArgs e)
   {
     Control ctrl = (Control)sender;
     MessageBox.Show("You clicked: " + ctrl.Name);
   }
  private void InitializeComponent()
  {
    this.Label1 = new System.Windows.Forms.Label();
    this.TextBox1 = new System.Windows.Forms.TextBox();
    this.Button1 = new System.Windows.Forms.Button();
    this.SuspendLayout();
    // 
    // Label1
    // 
    this.Label1.FlatStyle = System.Windows.Forms.FlatStyle.System;
    this.Label1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.Label1.Location = new System.Drawing.Point(14, 97);
    this.Label1.Name = "Label1";
    this.Label1.Size = new System.Drawing.Size(112, 24);
    this.Label1.TabIndex = 8;
    this.Label1.Text = "Label1";
    this.Label1.Click += new System.EventHandler(this.ctrlClick);
    // 
    // TextBox1
    // 
    this.TextBox1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.TextBox1.Location = new System.Drawing.Point(12, 61);
    this.TextBox1.Name = "TextBox1";
    this.TextBox1.Size = new System.Drawing.Size(156, 21);
    this.TextBox1.TabIndex = 7;
    this.TextBox1.Text = "TextBox1";
    this.TextBox1.Click += new System.EventHandler(this.ctrlClick);
    // 
    // Button1
    // 
    this.Button1.FlatStyle = System.Windows.Forms.FlatStyle.System;
    this.Button1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.Button1.Location = new System.Drawing.Point(12, 21);
    this.Button1.Name = "Button1";
    this.Button1.Size = new System.Drawing.Size(96, 28);
    this.Button1.TabIndex = 6;
    this.Button1.Text = "Button1";
    this.Button1.Click += new System.EventHandler(this.ctrlClick);
    // 
    // Form1
    // 
    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    this.ClientSize = new System.Drawing.Size(367, 281);
    this.Controls.Add(this.Label1);
    this.Controls.Add(this.TextBox1);
    this.Controls.Add(this.Button1);
    this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.Name = "Form1";
    this.Text = "Control Medley";
    this.ResumeLayout(false);
    this.PerformLayout();
  }

  [STAThread]
  static void Main()
  {
    Application.EnableVisualStyles();
    Application.Run(new Form1());
  }
}

Add mouse click event to TextBox

using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
   Label Label1;
   TextBox TextBox1;
   Button Button1;
  public Form1()
  {
        InitializeComponent();
  }
   private void ctrlClick(System.Object sender, EventArgs e)
   {
     Control ctrl = (Control)sender;
     MessageBox.Show("You clicked: " + ctrl.Name);
   }
  private void InitializeComponent()
  {
    this.Label1 = new System.Windows.Forms.Label();
    this.TextBox1 = new System.Windows.Forms.TextBox();
    this.Button1 = new System.Windows.Forms.Button();
    this.SuspendLayout();
    // 
    // Label1
    // 
    this.Label1.FlatStyle = System.Windows.Forms.FlatStyle.System;
    this.Label1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.Label1.Location = new System.Drawing.Point(14, 97);
    this.Label1.Name = "Label1";
    this.Label1.Size = new System.Drawing.Size(112, 24);
    this.Label1.TabIndex = 8;
    this.Label1.Text = "Label1";
    this.Label1.Click += new System.EventHandler(this.ctrlClick);
    // 
    // TextBox1
    // 
    this.TextBox1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.TextBox1.Location = new System.Drawing.Point(12, 61);
    this.TextBox1.Name = "TextBox1";
    this.TextBox1.Size = new System.Drawing.Size(156, 21);
    this.TextBox1.TabIndex = 7;
    this.TextBox1.Text = "TextBox1";
    this.TextBox1.Click += new System.EventHandler(this.ctrlClick);
    // 
    // Button1
    // 
    this.Button1.FlatStyle = System.Windows.Forms.FlatStyle.System;
    this.Button1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.Button1.Location = new System.Drawing.Point(12, 21);
    this.Button1.Name = "Button1";
    this.Button1.Size = new System.Drawing.Size(96, 28);
    this.Button1.TabIndex = 6;
    this.Button1.Text = "Button1";
    this.Button1.Click += new System.EventHandler(this.ctrlClick);
    // 
    // Form1
    // 
    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    this.ClientSize = new System.Drawing.Size(367, 281);
    this.Controls.Add(this.Label1);
    this.Controls.Add(this.TextBox1);
    this.Controls.Add(this.Button1);
    this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.Name = "Form1";
    this.Text = "Control Medley";
    this.ResumeLayout(false);
    this.PerformLayout();
  }

  [STAThread]
  static void Main()
  {
    Application.EnableVisualStyles();
    Application.Run(new Form1());
  }
}

Event Tracker

/*
User Interfaces in C#: Windows Forms and Custom Controls
by Matthew MacDonald
Publisher: Apress
ISBN: 1590590457
*/
using System;
using System.Drawing;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
namespace EventTracker
{
    /// <summary>
    /// Summary description for EventTracker.
    /// </summary>
    public class EventTracker : System.Windows.Forms.Form
    {
        internal System.Windows.Forms.GroupBox GroupBox1;
        internal System.Windows.Forms.Label Label4;
        internal System.Windows.Forms.Label Label1;
        internal System.Windows.Forms.PictureBox pic;
        internal System.Windows.Forms.TextBox txt;
        internal System.Windows.Forms.Button cmd;
        internal System.Windows.Forms.Label Label2;
        internal System.Windows.Forms.Label Label3;
        internal System.Windows.Forms.ListBox lstLog;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ruponentModel.Container components = null;
        public EventTracker()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();
            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }
        /// <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.GroupBox1 = new System.Windows.Forms.GroupBox();
            this.Label4 = new System.Windows.Forms.Label();
            this.Label1 = new System.Windows.Forms.Label();
            this.pic = new System.Windows.Forms.PictureBox();
            this.txt = new System.Windows.Forms.TextBox();
            this.cmd = new System.Windows.Forms.Button();
            this.Label2 = new System.Windows.Forms.Label();
            this.Label3 = new System.Windows.Forms.Label();
            this.lstLog = new System.Windows.Forms.ListBox();
            this.GroupBox1.SuspendLayout();
            this.SuspendLayout();
            // 
            // GroupBox1
            // 
            this.GroupBox1.Anchor = ((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
                | System.Windows.Forms.AnchorStyles.Right);
            this.GroupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                                    this.Label4,
                                                                                    this.Label1,
                                                                                    this.pic,
                                                                                    this.txt,
                                                                                    this.cmd,
                                                                                    this.Label2});
            this.GroupBox1.FlatStyle = System.Windows.Forms.FlatStyle.System;
            this.GroupBox1.Location = new System.Drawing.Point(8, 5);
            this.GroupBox1.Name = "GroupBox1";
            this.GroupBox1.Size = new System.Drawing.Size(384, 148);
            this.GroupBox1.TabIndex = 9;
            this.GroupBox1.TabStop = false;
            // 
            // Label4
            // 
            this.Label4.Location = new System.Drawing.Point(92, 108);
            this.Label4.Name = "Label4";
            this.Label4.Size = new System.Drawing.Size(56, 16);
            this.Label4.TabIndex = 5;
            this.Label4.Text = "And here:";
            // 
            // Label1
            // 
            this.Label1.Location = new System.Drawing.Point(6, 24);
            this.Label1.Name = "Label1";
            this.Label1.Size = new System.Drawing.Size(144, 16);
            this.Label1.TabIndex = 2;
            this.Label1.Text = "Test keyboard events here:";
            // 
            // pic
            // 
            this.pic.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.pic.Location = new System.Drawing.Point(156, 48);
            this.pic.Name = "pic";
            this.pic.Size = new System.Drawing.Size(192, 48);
            this.pic.TabIndex = 3;
            this.pic.TabStop = false;
            this.pic.Click += new System.EventHandler(this.pic_Click);
            this.pic.MouseEnter += new System.EventHandler(this.pic_MouseEnter);
            this.pic.MouseHover += new System.EventHandler(this.pic_MouseHover);
            this.pic.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pic_MouseUp);
            this.pic.DoubleClick += new System.EventHandler(this.pic_DoubleClick);
            this.pic.MouseLeave += new System.EventHandler(this.pic_MouseLeave);
            this.pic.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pic_MouseDown);
            // 
            // txt
            // 
            this.txt.Location = new System.Drawing.Point(156, 20);
            this.txt.Name = "txt";
            this.txt.Size = new System.Drawing.Size(192, 21);
            this.txt.TabIndex = 1;
            this.txt.Text = "";
            this.txt.KeyDown += new System.Windows.Forms.KeyEventHandler(this.txt_KeyDown);
            this.txt.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txt_KeyPress);
            this.txt.TextChanged += new System.EventHandler(this.txt_TextChanged);
            this.txt.KeyUp += new System.Windows.Forms.KeyEventHandler(this.txt_KeyUp);
            // 
            // cmd
            // 
            this.cmd.FlatStyle = System.Windows.Forms.FlatStyle.System;
            this.cmd.Location = new System.Drawing.Point(156, 100);
            this.cmd.Name = "cmd";
            this.cmd.Size = new System.Drawing.Size(88, 28);
            this.cmd.TabIndex = 4;
            this.cmd.Text = "Button1";
            this.cmd.Click += new System.EventHandler(this.pic_Click);
            this.cmd.MouseUp += new System.Windows.Forms.MouseEventHandler(this.pic_MouseUp);
            this.cmd.MouseEnter += new System.EventHandler(this.pic_MouseEnter);
            this.cmd.MouseHover += new System.EventHandler(this.pic_MouseHover);
            this.cmd.MouseLeave += new System.EventHandler(this.pic_MouseLeave);
            this.cmd.MouseDown += new System.Windows.Forms.MouseEventHandler(this.pic_MouseDown);
            // 
            // Label2
            // 
            this.Label2.Location = new System.Drawing.Point(20, 52);
            this.Label2.Name = "Label2";
            this.Label2.Size = new System.Drawing.Size(128, 16);
            this.Label2.TabIndex = 2;
            this.Label2.Text = "Test mouse events here:";
            // 
            // Label3
            // 
            this.Label3.Location = new System.Drawing.Point(24, 105);
            this.Label3.Name = "Label3";
            this.Label3.Size = new System.Drawing.Size(64, 24);
            this.Label3.TabIndex = 8;
            this.Label3.Text = "Label3";
            // 
            // lstLog
            // 
            this.lstLog.Anchor = (((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
                | System.Windows.Forms.AnchorStyles.Left) 
                | System.Windows.Forms.AnchorStyles.Right);
            this.lstLog.IntegralHeight = false;
            this.lstLog.Location = new System.Drawing.Point(8, 161);
            this.lstLog.Name = "lstLog";
            this.lstLog.Size = new System.Drawing.Size(384, 212);
            this.lstLog.TabIndex = 7;
            // 
            // EventTracker
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
            this.ClientSize = new System.Drawing.Size(400, 378);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                          this.GroupBox1,
                                                                          this.Label3,
                                                                          this.lstLog});
            this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
            this.Name = "EventTracker";
            this.Text = "Event Tracker";
            this.GroupBox1.ResumeLayout(false);
            this.ResumeLayout(false);
        }
        #endregion

        private void Log(String data)
        {
            lstLog.Items.Add(data);
            int itemsPerPage = (int)(lstLog.Height / lstLog.ItemHeight);
            lstLog.TopIndex = lstLog.Items.Count - itemsPerPage;
        }
                                                                                                    
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new EventTracker());
        }
        private void txt_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
        {
            Log("Key Down: " + e.KeyCode.ToString() + e.KeyValue.ToString());
        }
        private void txt_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
        {
            Log("Key Press: " + e.KeyChar.ToString());
        }
        private void txt_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
        {
            Log("Key Up: " + e.KeyCode.ToString() + e.KeyValue.ToString() + " Text is: " + txt.Text);
        }
        private void txt_TextChanged(object sender, System.EventArgs e)
        {
            Log("Changed: " + " Text is: " + txt.Text);
        }
        private void pic_MouseEnter(object sender, System.EventArgs e)
        {
            Log("Mouse Enter");
        }
        private void pic_MouseHover(object sender, System.EventArgs e)
        {
            Log("Mouse Hover");
        }
        private void pic_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            Log("Mouse Down: X=" + e.X.ToString() + "Y=" + e.Y.ToString() + " Button=" + e.Button.ToString());
        }
        private void pic_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
        {
            Log("Mouse Down: X=" + e.X.ToString() + "Y=" + e.Y.ToString() + " Button=" + e.Button.ToString());
        }
        private void pic_Click(object sender, System.EventArgs e)
        {
            Log("Click");
        }
        private void pic_DoubleClick(object sender, System.EventArgs e)
        {
            Log("Double Click");
        }
        private void pic_MouseLeave(object sender, System.EventArgs e)
        {
            Log("Mouse Leave");
        }
    }
}

Get event name for sender

using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
public class Form1 : Form
{
   Label Label1;
   TextBox TextBox1;
   Button Button1;
  public Form1()
  {
        InitializeComponent();
  }
   private void ctrlClick(System.Object sender, EventArgs e)
   {
     Control ctrl = (Control)sender;
     MessageBox.Show("You clicked: " + ctrl.Name);
   }
  private void InitializeComponent()
  {
    this.Label1 = new System.Windows.Forms.Label();
    this.TextBox1 = new System.Windows.Forms.TextBox();
    this.Button1 = new System.Windows.Forms.Button();
    this.SuspendLayout();
    // 
    // Label1
    // 
    this.Label1.FlatStyle = System.Windows.Forms.FlatStyle.System;
    this.Label1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.Label1.Location = new System.Drawing.Point(14, 97);
    this.Label1.Name = "Label1";
    this.Label1.Size = new System.Drawing.Size(112, 24);
    this.Label1.TabIndex = 8;
    this.Label1.Text = "Label1";
    this.Label1.Click += new System.EventHandler(this.ctrlClick);
    // 
    // TextBox1
    // 
    this.TextBox1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.TextBox1.Location = new System.Drawing.Point(12, 61);
    this.TextBox1.Name = "TextBox1";
    this.TextBox1.Size = new System.Drawing.Size(156, 21);
    this.TextBox1.TabIndex = 7;
    this.TextBox1.Text = "TextBox1";
    this.TextBox1.Click += new System.EventHandler(this.ctrlClick);
    // 
    // Button1
    // 
    this.Button1.FlatStyle = System.Windows.Forms.FlatStyle.System;
    this.Button1.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.Button1.Location = new System.Drawing.Point(12, 21);
    this.Button1.Name = "Button1";
    this.Button1.Size = new System.Drawing.Size(96, 28);
    this.Button1.TabIndex = 6;
    this.Button1.Text = "Button1";
    this.Button1.Click += new System.EventHandler(this.ctrlClick);
    // 
    // Form1
    // 
    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    this.ClientSize = new System.Drawing.Size(367, 281);
    this.Controls.Add(this.Label1);
    this.Controls.Add(this.TextBox1);
    this.Controls.Add(this.Button1);
    this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
    this.Name = "Form1";
    this.Text = "Control Medley";
    this.ResumeLayout(false);
    this.PerformLayout();
  }

  [STAThread]
  static void Main()
  {
    Application.EnableVisualStyles();
    Application.Run(new Form1());
  }
}