Prevent textbox autofill with previously entered values

Question

I have an asp page with some Textbox controls on it.

By default, the browser will suggest previously entered values for each box.

I'd like to prevent that behavior for some of the textboxes.

Is there a way to reliably do that across all major browsers?

I've tried setting

AutoCompleteType="Disabled" 

But that seems to have no effect in Firefox.

Here is an image of the behavior I'm trying to prevent.

Answer 1

For firefox

Either:

<asp:TextBox id="Textbox1" runat="server" autocomplete="off"></asp:TextBox> 

Or from the CodeBehind:

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

Answer 2

Autocomplete need to set off from textbox

<asp:TextBox ID="TextBox1" runat="server" autocomplete="off"></asp:TextBox>