private void button3_Click(object sender, EventArgs e)
        {
            optionpage c = new optionpage();

            c.Show();
            Hide();
        }
        private void submit_Click(object sender, EventArgs e)
        {
            con.ConnectionString = "Provider=OraOLEDB.Oracle.1;Persist Security Info=False;User ID=mca1285; Password=User123; Data Source=nitt";
            try
            {
                con.Open();
                if (Convert.ToBoolean(con.State))
                {
                    MessageBox.Show("Connection Success");
                }
            }
            catch
            {
                MessageBox.Show("Connection Failed");
            }


            com.Connection  = con;
            com.CommandText = "select pword  from profile where uname='" + uname.Text + "' ";
            string pwd = Convert.ToString(com.ExecuteScalar());

            bool result = pwd.Equals(pword.Text, StringComparison.Ordinal);

            if (result)
            {
                optionpage c = new optionpage();
                c.Show();
                Hide();
            }
            else
            {
                uname.Text = "";
                pword.Text = "";
                MessageBox.Show("Invalid Credentials");
            }
        }