Pls help Debug and revert: Values not entering into the database and not throwing Error. pls help

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Data.SqlClient;

public partial class Register : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }

    private Boolean InsertUpdateData(SqlCommand cmd)
    {
        String strConnString = System.Configuration.ConfigurationManager.ConnectionStrings["lateefConnectionString"].ConnectionString;
        SqlConnection con = new SqlConnection(strConnString);
        cmd.CommandType = CommandType.Text;
        cmd.Connection = con;
        try
        {
            con.Open();
            cmd.ExecuteNonQuery();
            return true;
        }
        catch (Exception ex)
        {
            Response.Write(ex.Message);
            return false;
        }
        finally
        {
            con.Close();
            con.Dispose();
        }
    }

    protected void btnSubmit_Click(object sender, EventArgs e)
    {

   //   using(SqlConnection Conn = new SqlConnection(ConfigurationManager.ConnectionStrings["lateefConnectionString"].ConnectionString))
        {
            try
            {
                string strQuery = "INSERT INTO [Register],[firstname],[lastname],[email],[Password],[Gender],[Dob],[Mobile],[department],[Address]) VALUES (@firstname,@lastname,@email,@Password,@Gender,@Dob,@Mobile,@department,@Address)";

                SqlCommand cmd = new SqlCommand(strQuery);

                //            const string SQL = "INSERT INTO Register values(@firstname,@lastname,@email,@Password,@Gender,@Dob,@Mobile,@department,@Address)";

                //adding parameters with value
                cmd.Parameters.AddWithValue("@firstname", txtFirstName.Text.ToString());
                cmd.Parameters.AddWithValue("@lastname", txtLastName.Text.ToString());
                cmd.Parameters.AddWithValue("@lastname", txtEmail.Text.ToString());
                cmd.Parameters.AddWithValue("@password", txtPassword.Text.ToString());
                cmd.Parameters.AddWithValue("@Gender", RdoGender.SelectedItem.Text.ToString());
                cmd.Parameters.AddWithValue("@Dob", txtDob.Text.ToString());
                cmd.Parameters.AddWithValue("@Mobile", txtMobile.Text.ToString());
                cmd.Parameters.AddWithValue("@department", TxtDpt.Text.ToString());
                cmd.Parameters.AddWithValue("@Address", txtAddress.Text.ToString());
                InsertUpdateData(cmd);

                lblMsg.Text= "Submission successful with Track ID";
            }
            catch
            {
            //  lblMsg.Text = "Not successful.";

            }
        }
    }
}