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May 14th, 2019
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  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Drawing;
  6. using System.Linq;
  7. using System.Text;
  8. using System.Threading.Tasks;
  9. using System.Windows.Forms;
  10. using MySql.Data.MySqlClient;
  11.  
  12.  
  13.  
  14. namespace Testing1
  15. {
  16. public partial class Form_Login : Form
  17. {
  18. MySqlConnection conn;
  19. MySqlDataReader mdr;
  20. //mdr = cmd.ExecuteReader();
  21. int i;
  22.  
  23.  
  24. public Form_Login()
  25. {
  26. InitializeComponent();
  27.  
  28.  
  29. //MySqlCommand commandDatabase = new MySqlCommand(query, databaseConnection);
  30. }
  31.  
  32. private void Label1_Click(object sender, EventArgs e)
  33. {
  34.  
  35. }
  36.  
  37. private void Button1_Click(object sender, EventArgs e)
  38. {
  39. i = 0;
  40. try
  41. {
  42. string MySQLConnectionString = "datasource=127.0.0.1;port=3306;username=root;password=;database=testing";
  43.  
  44. MySqlConnection databaseConnection = new MySqlConnection(MySQLConnectionString);
  45.  
  46. conn = new MySql.Data.MySqlClient.MySqlConnection();
  47. conn.ConnectionString = MySQLConnectionString;
  48. conn.Open();
  49.  
  50. MySqlCommand cmd = new MySqlCommand("SELECT * FROM users where userName='" + textBox1.Text + "'and password='" + textBox2.Text + "'", databaseConnection);
  51. MySqlCommand cmdRead = new MySqlCommand("SELECT firstName FROM users where userName='" + textBox1.Text + "'", databaseConnection);
  52. if (conn.State != ConnectionState.Open)
  53. {
  54. cmd.ExecuteNonQuery();
  55. mdr = cmd.ExecuteReader();
  56. }
  57. DataTable dt = new DataTable();
  58. MySqlDataAdapter da = new MySqlDataAdapter(cmd);
  59. da.Fill(dt);
  60. i = Convert.ToInt32(dt.Rows.Count.ToString());
  61.  
  62. if(i == 0)
  63. {
  64. MessageBox.Show("Login Failure");
  65. } else
  66. {
  67. MessageBox.Show("Login Success");
  68. if (mdr.Read())
  69. {
  70. catcher.Text = mdr.GetString("firstName").ToString();
  71. }
  72. else MessageBox.Show("Shit");
  73.  
  74. }
  75. }
  76. catch (MySqlException ex)
  77. {
  78. MessageBox.Show(ex.Message);
  79. }
  80.  
  81.  
  82. }
  83.  
  84. private void Label4_Click(object sender, EventArgs e)
  85. {
  86. var form1 = new Form();
  87. var form2 = new Form2();
  88. form1.Hide();
  89. form2.Show();
  90. }
  91. }
  92. }
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