How to center control in panel

This solution doesn't depend on any WinForms features like TableLayout, AutoScroll, Anchoring, etc. It requires panel with one control. It reacts on resizing of control and panel resizing. It doesn't change control size. When there is no sufficient place for control then scroll bar appears. Control left, top borders never go outside left, top borders of panel.

public static void CenterControlInPanel(Panel a_panel)
{
    if (a_panel.Controls.Count != 1)
        throw new InvalidOperationException();

    Control control = a_panel.Controls[0];
            
    a_panel.AutoScroll = false;
    a_panel.AutoSize = false;

    HScrollBar horz_bar = new HScrollBar();
    VScrollBar vert_bar = new VScrollBar();

    a_panel.Controls.Add(horz_bar);
    a_panel.Controls.Add(vert_bar);

    horz_bar.Dock = DockStyle.Bottom;
    vert_bar.Dock = DockStyle.Right;

    Panel panel = new Panel();
    a_panel.Controls.Add(panel);
    panel.Dock = DockStyle.Fill;

    a_panel.Controls.Remove(control);
    panel.Controls.Add(control);

    Action on_scroll = () =>
    {
        if (panel.ClientSize.Width < control.Width)
        {
            if (horz_bar.Value > 0)
                control.Left = -horz_bar.Value;
            else
                control.Left = 0;
        }
        else
            control.Left = (panel.ClientSize.Width - control.Width) / 2;


        if (panel.ClientSize.Height < control.Height)
        {
            if (vert_bar.Value > 0)
                control.Top = -vert_bar.Value;
            else
                control.Top = 0;
        }
        else
            control.Top = (panel.ClientSize.Height - control.Height) / 2;

    };

    Action on_resized = () =>
    {
        if (panel.ClientRectangle.Width < control.Width)
            horz_bar.Visible = true;
        else
            horz_bar.Visible = false;

        if (panel.ClientRectangle.Height < control.Height)
            vert_bar.Visible = true;
        else
            vert_bar.Visible = false;

        if (panel.ClientRectangle.Width < control.Width)
            horz_bar.Visible = true;
        else
            horz_bar.Visible = false;

        vert_bar.Minimum = 0;
        vert_bar.Maximum = control.Height;
        vert_bar.LargeChange = panel.ClientRectangle.Height;

        horz_bar.Minimum = 0;
        horz_bar.Maximum = control.Width;
        horz_bar.LargeChange = panel.ClientRectangle.Width;

        if (horz_bar.LargeChange + horz_bar.Value - 1 > control.Width)
            horz_bar.Value = control.Width - horz_bar.LargeChange + 1;
        if (vert_bar.LargeChange + vert_bar.Value - 1 > control.Height)
            vert_bar.Value = control.Height - vert_bar.LargeChange + 1;

        on_scroll();
    };

    panel.Resize += (s, e) => on_resized();
    horz_bar.Scroll += (s, e) => on_scroll();
    vert_bar.Scroll += (s, e) => on_scroll();
    control.Resize += (s, e) => on_resized();

    on_resized();
}