Security :: Login And Logout At First Click?

I got a problem with my login and logout for my asp.net website, whenever i try to login or logout, it will load the page i direct it to first then i have to reload the page again for the login or logout to work. First my login i am using a login control to do it and also using this code to go to another page:

protected void Login1_LoggedIn(object sender, EventArgs e)
{
Server.Transfer("LogonPage.aspx");
}

Next is my logout i am just using a button for the logout along with this codes:

protected void btnLogout_Click(object sender, EventArgs e)
{
Response.Clear();
FormsAuthentication.SignOut();
Server.Transfer("Login.aspx");
}

i really want it to login and logout at my first click.