Move to previous textbox from current by pressing backspace

Question

i want to know how to move the cursor from current textbox to previous textbox. i am creating textbox dynamically by enter keypress event one by one

e.g.

textbox1

textbox2

textbox3

suppose total three textbox now created and am on third one textbox means my cursor on textbox3 and i wants to move the cursor to textbox2 or focus to textbox2 for modify.

how do i do? please suggest proper code for the same.

Answer 1

If the tab orders are set correctly you can use GetNextControl method to move find previous control.

Answer 2

Basing on Giorgi's solution:

foreach(var tbox in new[]
     {
         tbox0, tbox1, tbox2
     })
{
    tbox.KeyPress += (sender,e) => keypressed(sender,e);
}

private void keypressed(object sender, KeyPressEventArgs e)
{
    if (e.KeyChar == (char)Keys.Back)
        ((Control)sender).GetNextControl((Control)sender, false).Select(); // .Focus()
}

Answer 3

Be careful that it won't cause problems in usability, like using BACKSPACE to erase the last letter, will also jump to the previous control, that will frustrate any user!

Only jump controls if the current control text is empty, and the user pressed backspace:

    private void textBox1_KeyUp(object sender, KeyEventArgs e)
    {
        if ((e.KeyCode == Keys.Back) & (((Control)sender).Text.Length == 0))
        {
            this.SelectNextControl((Control)sender, false, true, true, true);
        }
    }

Answer 4

Backspace is an important editing key for the user, don't mess with it. Press Tab to move forward, Shift+Tab to move backward. Your user is likely to already know this shortcut.