LoginSystem using C# using visual Studio 2010

LoginSystem using C# using visual Studio 2010

My page does not redirect to the Page I have specified. While I am doing
so it says The name "Response" does not exist in the current context
Please also help me with getting the register value in the database while
doing the signup.
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace LoginSystem123
{
public partial class Login : Form
{
public Login()
{
InitializeComponent();
}
private void buttonLogin_Click(object sender, EventArgs e)
{
var myConnection = new SqlConnection();
myConnection.ConnectionString = @"Data
Source=mukesh-PC\SQLEXPRESS;Initial
Catalog=testDb;Integrated Security=True;Pooling=False";
var myCommand = new SqlCommand();
var cmd = "SELECT * FROM [User] Where [User].Email =" + "'" +
textBoxEmail.Text + "'";
myCommand.CommandText = cmd;
myCommand.CommandType = CommandType.Text;
myCommand.Connection = myConnection;
myConnection.Open();
var myReader = myCommand.ExecuteReader();
bool isRegisteredUser = myReader.Read();
if (isRegisteredUser)
{
var PasswordFromDatabase = myReader.GetString(5);
if (textBoxPassword.Text == PasswordFromDatabase.TrimEnd())
{
MessageBox.Show("Successfully Logged on !");
}
else
{
MessageBox.Show("Invalid password. Try again");
}
}
else
{
MessageBox.Show("Invalid user");
}
}
/* private void buttonSignUp_Click(object sender, EventArgs e)
{
Response.Redirect("SignUp.cs");
}
*/
private void buttonSignUp_Click_1(object sender, EventArgs e)
{
Response.Redirect("SignUp.cs");
}
}
}