private void button1_Click(object sender, EventArgs e) { if (UnameTb.Text == "" || PassTb.Text == "") { MessageBox.Show("Enter The UserName And Password"); } else { if (RoleCb.SelectedIndex > -1) { if (RoleCb.SelectedItem.ToString() == "ADMIN") { if (UnameTb.Text == "Admin" && PassTb.Text == "Admin") { ProductForm prod = new ProductForm(); prod.Show(); this.Hide(); } else { MessageBox.Show("If You are the Admin, Enter The Correct Id and Password"); } } else { MessageBox.Show("Your in the seller selection"); //Con.Open(); //SqlDataAdapter sda = new SqlDataAdapter("Select count(8) from Seller where Ім'я='" + UnameTb.Text + "'and Пароль='" + PassTb.Text + "'", Con); //DataTable dt = new DataTable(); //sda.Fill(dt); if ((UnameTb.Text == "Ivan" && PassTb.Text == "Ivan"))//(dt.Rows[0][0].ToString() == "1") { //Sellername = UnameTb.Text; SellingForm sell = new SellingForm(); sell.Show(); this.Hide(); Con.Close(); } //else //{ // MessageBox.Show("Неправильне ім'я користувача або пароль"); //} //Con.Close(); } } else { MessageBox.Show("Select a role"); } } }