How to scroll a FlowLayout parent container to keep visible a portion of a children control?

Question

I have a WindowsForm application that has a FlowLayoutPanel container with a TextBox inside. This control is bigger than the flow panel, I've set the flow panel to AutoScroll = true.

The problem is I don't know how to make the flow panel scroll to the position of the text edition. If I write continuously in the textbox eventually I pass beyond of what it is visible. The scroll remains at the top and I can't see what it is written.

In consequence the question is, how can I make the container react to keep visible what it is being written?

Answer 1

I think I finally did it:

public partial class Form1 : Form
{
    public Point InitialTextBoxLoc ;

    public Form1()
    {
        InitializeComponent();
        InitialTextBoxLoc = textBox1.Location;
    }

    private void textBox1_TextChanged(object sender, EventArgs e)
    {
        Point caretLocalLoc = textBox1.GetPositionFromCharIndex(textBox1.Text.Length-1);
        Point caretLoc = new Point(caretLocalLoc.X + InitialTextBoxLoc.X,
                                   caretLocalLoc.Y + InitialTextBoxLoc.Y);

        Point scrollLoc = flowLayoutPanel1.AutoScrollPosition;
        if (caretLoc.X >= flowLayoutPanel1.Size.Width-10)
        {
            scrollLoc.X = caretLoc.X;

        }

        if (caretLoc.Y >= flowLayoutPanel1.Size.Height-10)
        {
            scrollLoc.Y = caretLoc.Y;
        }

        flowLayoutPanel1.AutoScrollPosition = scrollLoc;

    }
}