The conversion of a varchar data type to a datetime data type resulted in an out-of-range value. The statement has been terminated.

con.Open();
       SqlCommand cmd = new SqlCommand("insert into reg values('" + lbl_id.Text + "','" + lbl_dat.Text + "','" + txt_name.Text + "','" + txt_pwd.Text + "','" + txt_num.Text + "','" + txt_city.Text + "','" + txt_email.Text + "')", con);
       cmd.ExecuteNonQuery();
       con.Close();
       MsgBox.Show("registered successfully");
       Response.Redirect("login.aspx");