Redirect back to home page

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ASP.NET

I have a web form that when a user logs in it takes them to the welcome page where they can select a link on where to go. The welcome page is unique to all the users. If a user has a Level of 1 they go to a welcome page for that user. If a user has a Level of 2 that user has a welcome page for that user. What I am trying to do is when the user clicks on the link to go to a form and fills it out and clicks submit the redirect will take them back to their welcome page for that user. How can i do that? The users are in session.

protected void ButtonSubmit_Click(object sender, EventArgs e)
    {

        SqlConnection con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["PasswordConnectionString"].ConnectionString);
        con.Open();


        SqlCommand cmd = new SqlCommand("Insert into TableFIN2013 (INST_ID, TOTAL_REVE, INSTRUCTIO, RESEARCH, PUBLIC_SER, ACADEMIC_S, STUDENT_SE, INSTITUTIO, PHYSICAL_P, SCHOLARSHI, AUXILIARY_, HOSPITALS, INDEPENDEN, OTHEREXP, TOTASSETS, TOTLIABILITY, NoNEXPPERMRESASSETS, EXPENDABLE, UNRNETASSETS, TOTALREV, TUITFEES, CURRDEBT, LONGTERMDEBT) values (@INST_ID, @TOTAL_REVE, @INSTRUCTIO, @RESEARCH, @PUBLIC_SER, @ACADEMIC_S, @STUDENT_SE, @INSTITUTIO, @PHYSICAL_P, @SCHOLARSHI, @AUXILIARY_, @HOSPITALS, @INDEPENDEN, @OTHEREXP, @TOTASSETS, @TOTLIABILITY, @NoNEXPPERMRESASSETS, @EXPENDABLE, @UNRNETASSETS, @TOTALREV, @TUITFEES, @CURRDEBT, @LONGTERMDEBT)", con);
        

        cmd.CommandType = CommandType.Text;

        cmd.Parameters.AddWithValue("@INST_ID", TextBoxINST_ID.Text);
        cmd.Parameters.AddWithValue("@TOTAL_REVE", TextBoxTROA.Text);
        cmd.Parameters.AddWithValue("@INSTRUCTIO", TextBoxInstr.Text);
        cmd.Parameters.AddWithValue("@RESEARCH", TextBoxRes.Text);
        cmd.Parameters.AddWithValue("@PUBLIC_SER", TextBoxPubS.Text);
        cmd.Parameters.AddWithValue("@ACADEMIC_S", TextBoxAcad.Text);
        cmd.Parameters.AddWithValue("@STUDENT_SE", TextBoxStudS.Text);
        cmd.Parameters.AddWithValue("@INSTITUTIO", TextBoxInstiS.Text);
        cmd.Parameters.AddWithValue("@PHYSICAL_P", TextBoxOperM.Text);
        cmd.Parameters.AddWithValue("@SCHOLARSHI", TextBoxSFEDA.Text);
        cmd.Parameters.AddWithValue("@AUXILIARY_", TextBoxAuxE.Text);
        cmd.Parameters.AddWithValue("@HOSPITALS", TextBoxHosS.Text);
        cmd.Parameters.AddWithValue("@INDEPENDEN", TextBoxIndeO.Text);
        cmd.Parameters.AddWithValue("@OTHEREXP", TextBoxOED.Text);
        cmd.Parameters.AddWithValue("@TOTASSETS", TextBoxTA.Text);
        cmd.Parameters.AddWithValue("@TOTLIABILITY", TextBoxTL.Text);
        cmd.Parameters.AddWithValue("@NoNEXPPERMRESASSETS", TextBoxNPRNA.Text);
        cmd.Parameters.AddWithValue("@EXPENDABLE", TextBoxETRNA.Text);
        cmd.Parameters.AddWithValue("@UNRNETASSETS", TextBoxTUNA.Text);
        cmd.Parameters.AddWithValue("@TOTALREV", TextBoxTR.Text);
        cmd.Parameters.AddWithValue("@TUITFEES", TextBoxTFN.Text);
        cmd.Parameters.AddWithValue("@CURRDEBT", TextBoxCD.Text);
        cmd.Parameters.AddWithValue("@LONGTERMDEBT", TextBoxLTD.Text);


        cmd.ExecuteNonQuery();
        con.Close();
        Response.Redirect("Login.aspx");
    }
}

Login Code with Levels:

 protected void Button1_Click(object sender, EventArgs e)
    {

        SqlConnection con = new SqlConnection(System.Configuration.ConfigurationManager.ConnectionStrings["PasswordConnectionString"].ConnectionString);
        con.Open();



        if (true)
        {
            SqlCommand level = new SqlCommand("select accessLevel, Password, INST_ID from TableSecurity where EmailAddress = @EmailAddress AND Password = @Password", con);
            level.Parameters.Add(new SqlParameter("EmailAddress", TextBoxEA.Text));
            level.Parameters.Add(new SqlParameter("Password", TextBoxPW.Text));

            SqlDataReader reader = level.ExecuteReader();
            DataTable dt1 = new DataTable();
            dt1.Load(reader);

            foreach (DataRow dr1 in dt1.Rows)
            {
                int returnedLevel = Convert.ToInt32(dr1[0].ToString());
                int inst_id = Convert.ToInt32(dr1[2].ToString());
                Session["inst_id"] = inst_id;
                    
                if (returnedLevel == 1)
                {
                    Response.Redirect("FormAPublic.aspx");
                }
                else if (returnedLevel == 2)
                {
                    Response.Redirect("FormCPrivateNon.aspx");
                }
                else if (returnedLevel == 3)
                {
                    Response.Redirect("FormDPrivateFor.aspx");
                }
                else if (returnedLevel == 7)
                {
                    Response.Redirect("CEOPage.aspx");
                }
                else if (returnedLevel == 8)
                {
                    Response.Redirect("DBPage.aspx");
                }
                else if (returnedLevel == 11)
                {
                    Response.Redirect("FormAPublicL.aspx");
                }
                else if (returnedLevel == 21)
                {
                    Response.Redirect("FormCPrivateNonL.aspx");
                }
                else if (returnedLevel == 31)
                {
                    Response.Redirect("FormDPrivateForL.aspx");
                }
            }
        }
    }
}