Microsoft Visual Studio – Click – DoubleClick – OnMouse – MouseEnter – MouseLeave

1. Run Visual Studio

2. File> New project, select ‘C# windows Form Application’ and give it a name.

3. On the right column select Form1.cs, on the left open the toolbox, drag and drop over the Form:
– PictureBox

4. On the right column in the Property Window under the ‘Design’ section (Progettazione) change (Name):
– PictureBox -> myPictureBox

5. Double-click the PictureBox to create the myPictureBox_Click event handler, and add the following code in Form1.cs

Click

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace MouseTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        } // end public Form1

        private void myPictureBox_Click(object sender, EventArgs e)
        {
            myPictureBox.Size = new Size(100, 100);
        }
    }// end class Form1
}// end namespace 

6. Run

DoubleClick

Form1.Designer.cs

namespace MouseTest
{
    partial class Form1
    {
        /// <summary>
        /// Variabile di progettazione necessaria.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Pulire le risorse in uso.
        /// </summary>
        /// <param name="disposing">ha valore true se le risorse gestite devono essere eliminate, false in caso contrario.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Codice generato da Progettazione Windows Form

        /// <summary>
        /// Metodo necessario per il supporto della finestra di progettazione. Non modificare
        /// il contenuto del metodo con l'editor di codice.
        /// </summary>
        private void InitializeComponent()
        {
            
            this.myPictureBox = new System.Windows.Forms.PictureBox();
            ((System.ComponentModel.ISupportInitialize)(this.myPictureBox)).BeginInit();
            this.SuspendLayout();
            // 
            // myPictureBox
            // 
            this.myPictureBox.Image = global::ButtonsTest.Properties.Resources.andrea_tonin;
            this.myPictureBox.InitialImage = null;
            this.myPictureBox.Location = new System.Drawing.Point(12, 12);
            this.myPictureBox.Name = "myPictureBox";
            this.myPictureBox.Size = new System.Drawing.Size(195, 195);
            this.myPictureBox.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
            this.myPictureBox.TabIndex = 1;
            this.myPictureBox.TabStop = false;
            this.myPictureBox.DoubleClick += new System.EventHandler(this.myPictureBox_DoubleClick);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(740, 374);
            this.Controls.Add(this.myPictureBox);
            this.Name = "Form1";
            this.Text = "Form1";
            ((System.ComponentModel.ISupportInitialize)(this.myPictureBox)).EndInit();
            this.ResumeLayout(false);

        }

        #endregion

       
        private System.Windows.Forms.PictureBox myPictureBox;
    }
}

Notice:
myPictureBox -> this.myPictureBox.DoubleClick += new System.EventHandler(this.myPictureBox_DoubleClick);

Into Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace MouseTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        } // end public Form1
        private void myPictureBox_DoubleClick(object sender, EventArgs e)
        {
            myPictureBox.Size = new Size(50, 50);
        }
    }// end class Form1
}// end namespace ButtonsTest

Notice:
private void myPictureBox_DoubleClick(object sender, EventArgs e)
{
myPictureBox.Size = new Size(50, 50);
}

MouseHover

Change the code event as show below:

Form1.Designer.cs

...
this.myPictureBox.MouseHover += new System.EventHandler(this.myPictureBox_MouseHover);
...

Form1.cs

...
private void myPictureBox_MouseHover(object sender, EventArgs e)
{
	myPictureBox.Size = new Size(50, 50);
}
...

MouseEnter

Change the code event as show below:

Form1.Designer.cs

...
this.myPictureBox.MouseEnter += new System.EventHandler(this.myPictureBox_MouseEnter);
...

Form1.cs

...
private void myPictureBox_MouseEnter(object sender, EventArgs e)
{
	myPictureBox.Size = new Size(50, 50);
}
...

MouseLeave

Change the code event as show below:

Form1.Designer.cs

...
this.myPictureBox.MouseLeave += new System.EventHandler(this.myPictureBox_MouseLeave);
...

Form1.cs

...
private void myPictureBox_MouseLeave(object sender, EventArgs e)
{
	myPictureBox.Size = new Size(50, 50);
}
...