private void button1_Click(object sender, EventArgs e) { conn.Open(); cmd = new SqlCommand("Select * from Tai_Khoan Where Ma_TaiKhoan = '" + textBox1.Text + "' and MatKhau = '" + textBox2.Text + "'", conn.conn); dr = cmd.ExecuteReader(); if (dr.HasRows) { label5.Text = ""; this.Hide(); QuanTri quantri = new QuanTri(); quantri.Show(); if (checkBox1.Checked) { FileStream stream = new FileStream(Application.StartupPath + @"\config.dat", FileMode.Create); BinaryWriter binstr = new BinaryWriter(stream); binstr.Write(textBox1.Text); binstr.Write(textBox2.Text); binstr.Write(checkBox1.Checked); binstr.Close(); return; } else if (checkBox1.Checked == false) { File.Delete("config.dat"); } } else { label5.Text = "Sai Tài Khoản Hoặc Mật Khẩu"; textBox2.Clear(); } conn.Close(); }
private void button1_Click(object sender, EventArgs e) { conn.Open(); cmd = new SqlCommand("Select * from Tai_Khoan Where Ma_TaiKhoan = '"+textBox1.Text+"' and MatKhau = '"+textBox2.Text+"'", conn.conn); dr = cmd.ExecuteReader(); if (dr.HasRows) { label5.Text = ""; this.Hide(); QuanTri quantri = new QuanTri(); quantri.Show(); if (checkBox1.Checked) { FileStream stream = new FileStream(Application.StartupPath + @"\config.dat", FileMode.Create); BinaryWriter binstr = new BinaryWriter(stream); binstr.Write(textBox1.Text); binstr.Write(textBox2.Text); binstr.Write(checkBox1.Checked); binstr.Close(); return; } else if (checkBox1.Checked == false) { File.Delete("config.dat"); } } else { label5.Text = "Sai Tài Khoản Hoặc Mật Khẩu"; textBox2.Clear(); } conn.Close(); }