How to Redirect domain.com to www.domain.com for ASP .net

Hello,

I have a site which google has indexed as www.domain.com/default.aspx and i want to 301 redirect this to http://www.domain.com, How do i redirect this asp.net page.


thanks

 

protected void Button1_Click(object sender, EventArgs e)
{
Response.Redirect("default2.aspx");
}

something like that

 

pls clarify this, where should i add this code, and one morething .htaccess wont work its on IIS servers