NP128 AddRange()

Question

Hi Guys

 

NP128 AddRange()

 

In some program without AddRange() method, button won’t appear on the Form. But in some program without AddRange() method, button appears on the Form. Actually what is the function of the AddRange(). Please explain.

 

this.Controls.AddRange(new System.Windows.Forms.Control[] {this.button1});

 

Thank you

 

Program with AddRange()

 

namespace _9_WindowCreatedWithIDE

{

     public class Form1 : System.Windows.Forms.Form

    {

        private Button button1;

        private System.ComponentModel.Container components = null;

 

        public Form1()

        {

            InitializeComponent();

        }

       

        protected override void Dispose(bool disposing)

        {

            if (disposing)

            {

                if (components != null)

                {

                    components.Dispose();

                }

            }

            base.Dispose(disposing);

        }

 

        #region Windows Form Designer generated code

       

        private void InitializeComponent()

        {

            this.button1 = new System.Windows.Forms.Button();

            this.SuspendLayout();

            // button1

            this.button1.Location = new System.Drawing.Point(80, 64);

            this.button1.Name = "button1";

            this.button1.TabIndex = 0;

            this.button1.Text = "Press Me";

            // Form1

            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);

            this.ClientSize = new System.Drawing.Size(292, 273);

            //this.Controls.Add(this.button1);

            this.Controls.AddRange(new System.Windows.Forms.Control[] { this.button1 });

            this.Name = "Form1";

            this.Text = "My IDE Form";

            this.ResumeLayout(false);

 

        }

        #endregion

 

        static void Main()

        {

            Application.Run(new Form1());

        }

    }

}

 

Program without AddRange()

 

namespace _10_WindowCreatedWithIDE

{

    public class Form1 : System.Windows.Forms.Form

    {

        private Button button1;

        private System.ComponentModel.Container components = null;

 

        public Form1()

        {

            InitializeComponent();

        }

 

        protected override void Dispose(bool disposing)

        {

            if (disposing)

            {

                if (components != null)

                {

                    components.Dispose();

                }

            }

            base.Dispose(disposing);

        }

 

        #region Windows Form Designer generated code

       

        private void InitializeComponent()

        {

            this.button1 = new System.Windows.Forms.Button();

            this.SuspendLayout();

            // button1

            this.button1.Location = new System.Drawing.Point(80, 64);

            this.button1.Name = "button1";

            this.button1.TabIndex = 0;

            this.button1.Text = "Press Me";

            this.button1.Click += new System.EventHandler(this.button1_Click);

            // Form1

            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);

            this.ClientSize = new System.Drawing.Size(292, 273);

            this.Controls.Add(this.button1);

            this.Name = "Form1";

            this.Text = "My IDE Form";

            this.ResumeLayout(false);

 

        }

        #endregion

       

        static void Main()

        {

            Application.Run(new Form1());

        }

        private void button1_Click(object sender, System.EventArgs e)

        {

            MessageBox.Show("Thank you");

        }

    }

}