How do you specify your Content Type in ASP.NET?

Response.Clear()
Response.ContentType = "application/xhtml+xm"

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs"
Inherits="_Default" %>


<asp:literal runat="server" id="dt"></asp:literal>


<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">

protected void Page_Load(object sender, EventArgs e)
{
this.dt.Text= "<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">";

}