C#

PictureBox temp = new PictureBox();
temp.Name = "PictureBoxX" + x.ToString();
MyForm.Controls.Add(temp);

PictureBox temp = (PictureBox) MyForm.Controls["PictureBoxX" + x.ToString()];
// Access properties using temp

Sojaner wrote:

Do you mean using a 2 dimention array of PictureBox controls?

And you mean, when coding in C#, from the beginning, you have to plane every object and other things and there is no way to decide what to do at runtime, like scripting languages?

PictureBox[,] pictureBoxes;

        private void Form1_Load(object sender, EventArgs e)
        {
            pictureBoxes = new PictureBox[20, 20];
            for (int x = 0; x < 20; x++)
            {
                for (int y = 0; y < 20; y++)
                {
                    pictureBoxes[x, y] = new PictureBox();
                    pictureBoxes[x, y].Name = "pictureBoxX" + x.ToString() + "Y" + y.ToString();
                    pictureBoxes[x, y].Width = 10;
                    pictureBoxes[x, y].Height = 10;
                    pictureBoxes[x, y].Left = x * 10;
                    pictureBoxes[x, y].Top = y * 10;
                    pictureBoxes[x, y].BorderStyle = BorderStyle.FixedSingle;
                    pictureBoxes[x, y].Click += new EventHandler(PictureBox_Click);
                    this.Controls.Add(pictureBoxes[x, y]);
                }
            }
        }

        void PictureBox_Click(object sender, EventArgs e)
        {
            PictureBox temp = (PictureBox)sender;
            ChangeColor(temp);
        }

        void ChangeColor(PictureBox pictureBox)
        {
            Random random = new Random();
            Bitmap bitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
            Graphics graphic = Graphics.FromImage(bitmap);
            SolidBrush brush = new SolidBrush(Color.FromArgb(random.Next(0, 255), random.Next(0, 255), random.Next(0, 255)));
            graphic.FillRectangle(brush, new Rectangle(0, 0, pictureBox.Width, pictureBox.Height));
            pictureBox.Image = bitmap;
        }

PictureBox pictureBox;

pictureBox = new PictureBox();
pictureBox.Name = "pictureBoxX" + x.ToString() + "Y" + y.ToString();
pictureBox.Width = 10;
pictureBox.Height = 10;
pictureBox.Left = x * 10;
pictureBox.Top = y * 10;
pictureBox.BorderStyle = BorderStyle.FixedSingle;
pictureBox.Click += new EventHandler(PictureBox_Click);
this.Controls.Add(pictureBox);
pictureBoxes[x, y] = pictureBox

Name: FormPosition
Type: System.Drawing.Point
Scope: User (Take care of this, it made me crazy to get this point: Application scope, is read-only and it will be the same as the value you gave to it at the beginning and you can not change it at runtime! But User scope is made to be assigned both at the beginning and at runtime. )
Value: 100, 100

<br />
Point formPosition = global::YourNamespace.Properties.Settings.Default.FormPosition;//YourNamespace = (The main namespace of your application)<br />

<br />
Point formPosition = new Point(MyForm.Left, MyForm.Top);<br />
global::YourNamespace.Properties.Settings.Default.FormPosition = formPosition;//YourNamespace = (The main namespace of your application)<br />