Create Dynamic Buttons in a Grid Layout - Create a Magic Square Ui

Create dynamic buttons in a grid layout - Create a magic square UI

You can use a TableLayoutPanel and add buttons to panel dynamically.

If you don't need interaction with buttons, you can add Label instead.

Create square dynamically:

public void CreateSquare(int size)
{
    //Remove previously created controls and free resources
    foreach (Control item in this.Controls)
    {
        this.Controls.Remove(item);
        item.Dispose();
    }

    //Create TableLayoutPanel
    var panel = new TableLayoutPanel();
    panel.RowCount = size;
    panel.ColumnCount = size;
    panel.BackColor = Color.Black;

    //Set the equal size for columns and rows
    for (int i = 0; i < size; i++)
    {
        var percent = 100f / (float)size;
        panel.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, percent));
        panel.RowStyles.Add(new RowStyle(SizeType.Percent, percent));
    }

    //Add buttons, if you have your desired output in an array
    //you can set the text of buttons from your array
    for (var i = 0; i < size; i++)
    {
        for (var j = 0; j < size; j++)
        {
            var button = new Button();
            button.BackColor = Color.Lime;
            button.Font = new Font(button.Font.FontFamily, 20, FontStyle.Bold);
            button.FlatStyle = FlatStyle.Flat;

            //you can set the text of buttons from your array
            //For example button.Text = array[i,j].ToString();
            button.Text = string.Format("{0}", (i) * size + j + 1);
            button.Name = string.Format("Button{0}", button.Text);
            button.Dock = DockStyle.Fill;

            //If you need interaction with buttons
            button.Click += b_Click;
            panel.Controls.Add(button, j, i);
        }
    }
    panel.Dock = DockStyle.Fill;
    this.Controls.Add(panel);
}

If you need interaction with buttons

void button_Click(object sender, EventArgs e)
{
    var button = (Button)sender;
    //Instead put your logic here
    MessageBox.Show(string.Format("You clicked {0}", button.Text));
}

As an example, you can call

CreateSquare(3);

Screenshot:

Arranging controls in Winforms TableLayoutPanel

Use the second overload of tableLayoutPanel1.Controls.Add() in order to pass the row and column index:
public virtual void Add(Control control, int column, int row);

EXAMPLE:

private void SetTableLayoutPanel()
{
    tableLayoutPanel1.RowStyles.Clear();
    tableLayoutPanel1.ColumnCount = 2;
    tableLayoutPanel1.RowCount = 3;
    tableLayoutPanel1.CellBorderStyle = TableLayoutPanelCellBorderStyle.Single;

    var counter = 1;
    for (int i = 0; i < tableLayoutPanel1.ColumnCount; i++)
    {
        for (int j = 0; j < tableLayoutPanel1.RowCount; j++)
        {
            Button b = new Button();
            b.Text = "C" + counter;
            tableLayoutPanel1.Controls.Add(b, i, j);

            counter++;
        }               
    }
}

OUTPUT:

Adding dynamic controls to TableLayoutPanel in .NET windows form

You just need to use the Controls.Add method and specify column and row for the control:

rowLayout.Controls.Add(tb1, 0, 0);
rowLayout.Controls.Add(tb2, 0, 1);

C# winforms add controls to dynamic created tabpages

I think the previous statement regarding the placement of the buttons is probably the problem. Try adding the following which will change the placement of each button.

        int i = 0;
        while (reader.Read())
        {
            Button btn = new Button();
            string name = reader["name"].ToString();

            btn.Text = name;
            btn.Name = "desk_" + reader["id"];
            btn.Size = new Size(100, 60);
            btn.Location=new Point(100, 100+i);

            desk.Add(btn);
            i += 10;
        }

Dynamically assign a click event to every single button located in a grid cell

every C# event handler has a sender parameter that is a reference to the object that fired the event

protected void ButtonClicEvent(object sender, EventArgs e)
{
  var btn = (Button)sender;

  // btn is a reference to the button that fired the event
  btn.BackgroundColor = Color.Orange;
}

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