How To Set The Scrollbar To Move At Last Line In Multiline Textbox?

I am using asp.net. How to set the scrollbar to move at last line in multiline textbox at client side?

Solution 1:

Set ClientIDMode="Static" so you can reference the textarea from jQuery using its ID:

<asp:TextBoxID="myTextBox"runat="server"ClientIDMode="Static"TextMode="MultiLine"></asp:TextBox>

And add this script after jQuery script tag:

$(document).ready(function () {
    $('#myTextBox').scrollTop($('#myTextBox')[0].scrollHeight - $('#myTextBox').height());
});

I was curious about compatibility so I tested it in Chrome, Firefox, Opera and IE9 and it works. :)

Here is a jsFiddle example of the solution: http://jsfiddle.net/g9KBB/

Solution 2:

possible solution with jquery (worked for me in chrome 19):

$('#wmd-input').scrollTop($('#wmd-input').height())

where wmd-input is the id of the textarea

Solution 3:

functionf(ta_id) {
        var d = document, ta, rng;
        if (d.all) {
            ta = d.all[ta_id];
            if (ta && ta.createTextRange) {
                rng = ta.createTextRange();
                rng.collapse(false);
                rng.select();
            }
        }
    }
    functionSetTextBox(ID) {
        varTextBoxes = document.getElementById(ID.id);
        if (TextBoxes != null) {
            for (var i = 0; i < TextBoxes.length; i++) {
                f(TextBoxes[i].id);
            }
        }
    }