private void button1_Click(object sender, EventArgs e)
        {
            this.Hide();
            SelectPage mm = new SelectPage();

            mm.Show();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            SqlConnection  conn = new SqlConnection(global::Cocing_Maneger.Properties.Settings.Default.textloginConnectionString);
            SqlDataAdapter sda  = new SqlDataAdapter("select count(*) from login where username ='******' and password='******'", conn);
            DataTable      dt   = new DataTable();

            sda.Fill(dt);
            if (dt.Rows[0][0].ToString() == "1")
            {
                this.Hide();
                SelectPage mm = new SelectPage();
                mm.Show();
            }

            else
            {
                MessageBox.Show("Please Enter Correct Username and Password", "Wrong Password and Username", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }