How do you return the focus to the last used control after clicking a button in a winform app?

Question

I\'m working on a windows forms application (C#) where a user is entering data in a form. At any point while editing the data in the form the user can click one of the butt

Answer 1

For a bit of 'simplicity' maybe try.

public Form1()
    {
        InitializeComponent();

        foreach (Control ctrl in Controls)
        {
            if (ctrl is TextBox)
            {
                ctrl.Enter += delegate(object sender, EventArgs e)
                              {
                                  _lastEnteredControl = (Control)sender;
                              };
            }
        }
    }

then you don't have to worry about decorating each textbox manually (or forgetting about one too).