how to set Form authentication in asp.net

Question

I am aware of how to configure windows authentication using asp.net My requirement is as soon as the web page loads it should redirect to login page and in login page i need to enter windows credentials then it should validate using windows authentication method and redirect me to original page. Can anyone help me how to do it?

Answer 1

in web.config add the following lines of code

    <system.web>
    <authentication mode="Forms">
    <forms defaultUrl="indexpagename.aspx" loginUrl="Login.aspx" slidingExpiration="true" timeout="2880"></forms>
    </authentication>
    </system.web>