C#

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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