private void button1_Click(object sender, EventArgs e)
        {
            SqlDataAdapter sda = new SqlDataAdapter("Select UserName, Password From LogInProfile Where UserName ='" +textBox1.Text+ "' and Password ='" +textBox2.Text+ "' ",con);
            DataTable dt = new DataTable();
            sda.Fill(dt);
            if (dt.Rows.Count == 1)
            {
                BMS obj = new BMS();
                obj.Show();
                this.Hide();
            }
            else
            {
                MessageBox.Show("Invalid Username Or Password !", "Error", MessageBoxButtons.OK);
            }

        }