TextBox showing past entries

Question

I can not get the textbox past entries to go away using the aspx.vb behind page ( can do it on aspx page) Example below

I have tried both

        txt.AutoCompleteType = AutoCompleteType.Disabled
        txt.ViewStateMode = UI.ViewStateMode.Disabled

Answer 1

add autocomplete="off" attribute to textbox

<asp:TextBox Runat="server" ID="Textbox1" autocomplete="off"></asp:TextBox>

or add to to from tag

<form id="Form1" method="post" runat="server" autocomplete="off">

using code behind

Textbox1.Attributes.Add("autocomplete", "off");