I have use .net and create login page. but my problem is that the login page save the Username field.Is it possible, not to allow the web browsers even save the username field.some thing like hotmail login page.

Dear JBCash,
I did not get what do you mean by your reply/link

What kind of field is your username field? Is it a HTMLInputText or an ASP server control field?

It's a browser setting. if you have your browser set to save usernames/passwords it will.

You can use a autocomplete="off" attribute in the opening <form > tag but the page will not validate to a strict doctype.

If this is a REALLY important issue you can get tricky and have the name of your username field randomly generated. That would definitely solve the problem.

it's ASP control.
IE settings is not proper solution though I do not know my users IE setting they login. I mean something like 'www.hotmial.com'

As Chris Hirst mentioned above, Hotmail (And Yahoo mail and a bunch of others) do this with the tag "Autocomplete=Off". You can see this if you go to Hotmail's login page, view the source and do a search for "autocomplete".

Example of using the Autocomplete tag:

<INPUT NAME="name" SIZE=40 AUTOCOMPLETE=OFF>

Although it's not valid HTML according to the W3C.

There is a javascript implementation of the concept here that may help you and that conforms to the HTML guidelines.

You can try to clear the textfies of the username on the page load and page refresh events.

Do you have any sub I should Use for this purpose.
sincerely yours,

on the page_load event just set your textbox to be empty

txtUserName.Text = "";