91 lines
2.9 KiB
C#
91 lines
2.9 KiB
C#
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using System;
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using System.Data;
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using MySql.Data.MySqlClient;
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public class Database
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{
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private string connectionString = "server=80.90.179.235;database=pozorisp_GorbachevAV;user=pozorisp;password=pozorisp;";
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public MySqlConnection GetConnection()
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{
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return new MySqlConnection(connectionString);
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}
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public bool AuthenticateUser(string username, string password)
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{
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using (var connection = GetConnection())
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{
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connection.Open();
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string query = "SELECT COUNT(*) FROM users WHERE username = @username AND password = @password";
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using (var cmd = new MySqlCommand(query, connection))
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{
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cmd.Parameters.AddWithValue("@username", username);
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cmd.Parameters.AddWithValue("@password", password);
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return Convert.ToInt32(cmd.ExecuteScalar()) > 0;
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}
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}
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}
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public DataTable GetUsers()
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{
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using (var connection = GetConnection())
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{
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connection.Open();
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string query = "SELECT id, username, email FROM users";
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using (var cmd = new MySqlCommand(query, connection))
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using (var adapter = new MySqlDataAdapter(cmd))
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{
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DataTable dt = new DataTable();
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adapter.Fill(dt);
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return dt;
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}
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}
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}
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public void AddUser(string username, string password, string email)
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{
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using (var connection = GetConnection())
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{
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connection.Open();
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string query = "INSERT INTO users (username, password, email) VALUES (@username, @password, @email)";
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using (var cmd = new MySqlCommand(query, connection))
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{
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cmd.Parameters.AddWithValue("@username", username);
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cmd.Parameters.AddWithValue("@password", password);
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cmd.Parameters.AddWithValue("@email", email);
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cmd.ExecuteNonQuery();
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}
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}
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}
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public void UpdateUser(int id, string username, string email)
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{
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using (var connection = GetConnection())
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{
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connection.Open();
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string query = "UPDATE users SET username = @username, email = @email WHERE id = @id";
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using (var cmd = new MySqlCommand(query, connection))
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{
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cmd.Parameters.AddWithValue("@id", id);
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cmd.Parameters.AddWithValue("@username", username);
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cmd.Parameters.AddWithValue("@email", email);
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cmd.ExecuteNonQuery();
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}
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}
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}
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public void DeleteUser(int id)
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{
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using (var connection = GetConnection())
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{
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connection.Open();
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string query = "DELETE FROM users WHERE id = @id";
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using (var cmd = new MySqlCommand(query, connection))
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{
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cmd.Parameters.AddWithValue("@id", id);
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cmd.ExecuteNonQuery();
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}
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}
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}
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}
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