Set Focus To End Of Text In Textbox After Postback?

I've got a simple ASP.Net form with txtBox and btn. User click btn, which adds text to an ASP:TextBox in a postback (its adding a known 'starter text'. After the postback I'd like

Solution 1:

I found a solution in asp.net website ( check it for discussion about cross browser version of given solution!)

there is javascrip code that do it:

<scripttype="text/javascript">functionSetCursorToTextEnd(textControlID)
        {
            var text = document.getElementById(textControlID);
            if (text != null && text.value.length > 0)
            {
                if (text.createTextRange)
                {
                    varFieldRange = text.createTextRange();
                    FieldRange.moveStart('character', text.value.length);
                    FieldRange.collapse();
                    FieldRange.select();
                }
            }
        }
</script>