Making Textbox control autoscrollable

If text is appended every time, we can do this way:

txtBx->AppendText(strToAppend);
txtBx->Focus();
txtBx->ScrollToCaret();

If text is completely loaded from the beginning to the end every time, it can be done this way:

txtBx->Text = strContent;
txtBx->Focus();
txtBx->SelectionLength = 0;
txtBx->SelectionStart = txtBx->Text->Length;
txtBx->ScrollToCaret();

In either case, Focus method is indispensable.