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| using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace kursach
{
public partial class Form1 : Form
{
SqlConnection sqlConnection;
public Form1()
{
InitializeComponent();
}
private async void Form1_Load(object sender, EventArgs e)
{
//адрес таблицы данных
string connectionString = @"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=C:\Users\DevilS\source\repos\kursach\kursach\Database1.mdf;Integrated Security=True";
sqlConnection = new SqlConnection(connectionString);
await sqlConnection.OpenAsync();
SqlDataReader sqlReader = null;// получение таблицы
SqlCommand command = new SqlCommand("SELECT*FROM[Abiturient]", sqlConnection);//выбор всех столбцов таблицы
try
{
sqlReader = await command.ExecuteReaderAsync();//считывание таблицы
while(await sqlReader.ReadAsync())
{
listBox1.Items.Add(Convert.ToString(sqlReader["Id"]));
listBox2.Items.Add(Convert.ToString(sqlReader["Регистрационный номер"]));
listBox3.Items.Add(Convert.ToString(sqlReader["Фамилия"]));
listBox4.Items.Add(Convert.ToString(sqlReader["Имя"]));
listBox5.Items.Add(Convert.ToString(sqlReader["Отчество"]));
listBox6.Items.Add(Convert.ToString(sqlReader["Дата рождения"]));
listBox7.Items.Add(Convert.ToString(sqlReader["Первый экзамен"]));
listBox8.Items.Add(Convert.ToString(sqlReader["Второй экзамен"]));
listBox9.Items.Add(Convert.ToString(sqlReader["Третий экзамен"]));
}
}
catch(Exception ex)
{
MessageBox.Show(ex.Message.ToString(), ex.Source.ToString(), MessageBoxButtons.OK,MessageBoxIcon.Error);
}
finally
{
if (sqlReader != null)
sqlReader.Close();
}
}
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void label1_Click(object sender, EventArgs e)
{
}
//добавление записей
private async void textBox1_TextChanged(object sender, EventArgs e)
{
}
private void label2_Click(object sender, EventArgs e)
{
}
private void tabPage2_Click(object sender, EventArgs e)
{
}
private void label3_Click(object sender, EventArgs e)
{
}
private void label4_Click(object sender, EventArgs e)
{
}
private void label20_Click(object sender, EventArgs e)
{
}
private void listBox3_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void listBox6_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void listBox5_SelectedIndexChanged(object sender, EventArgs e)
{
}
private void menuStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)
{
if (sqlConnection != null && sqlConnection.State != ConnectionState.Closed)
{
sqlConnection.Close();
}
}
private void выходToolStripMenuItem_Click(object sender, EventArgs e)
{
if (sqlConnection != null && sqlConnection.State !=ConnectionState.Closed)
{
sqlConnection.Close();
}
}
private async void textBox2_TextChanged(object sender, EventArgs e)
{
}
private void textBox3_TextChanged(object sender, EventArgs e)
{
}
private void textBox4_TextChanged(object sender, EventArgs e)
{
}
private void textBox5_TextChanged(object sender, EventArgs e)
{
}
private void textBox6_TextChanged(object sender, EventArgs e)
{
}
private void textBox7_TextChanged(object sender, EventArgs e)
{
}
private void label22_Click(object sender, EventArgs e)
{
}
//вывод таблицы
private async void обновитьToolStripMenuItem_Click(object sender, EventArgs e)
{
listBox1.Items.Clear();
listBox2.Items.Clear();
listBox3.Items.Clear();
listBox4.Items.Clear();
listBox5.Items.Clear();
listBox6.Items.Clear();
listBox7.Items.Clear();
listBox8.Items.Clear();
listBox9.Items.Clear();
SqlDataReader sqlReader = null;// получение таблицы
SqlCommand command = new SqlCommand("SELECT*FROM[Abiturient]", sqlConnection);//выбор всех столбцов таблицы
try
{
sqlReader = await command.ExecuteReaderAsync();//считывание таблицы
while (await sqlReader.ReadAsync())
{
listBox1.Items.Add(Convert.ToString(sqlReader["Id"]));
listBox2.Items.Add(Convert.ToString(sqlReader["Регистрационный номер"]));
listBox3.Items.Add(Convert.ToString(sqlReader["Фамилия"]));
listBox4.Items.Add(Convert.ToString(sqlReader["Имя"]));
listBox5.Items.Add(Convert.ToString(sqlReader["Отчество"]));
listBox6.Items.Add(Convert.ToString(sqlReader["Дата рождения"]));
listBox7.Items.Add(Convert.ToString(sqlReader["Первый экзамен"]));
listBox8.Items.Add(Convert.ToString(sqlReader["Второй экзамен"]));
listBox9.Items.Add(Convert.ToString(sqlReader["Третий экзамен"]));
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), ex.Source.ToString(), MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
if (sqlReader != null)
sqlReader.Close();
}
}
//ДОбавить
private async void button2_Click(object sender, EventArgs e)
{
if (label22.Visible)
label22.Visible = false;
if (!string.IsNullOrEmpty(textBox3.Text) && !string.IsNullOrWhiteSpace(textBox3.Text)
)
{
SqlCommand command = new SqlCommand("INSERT INTO [Abiturient](Имя)VALUES", sqlConnection);
await command.ExecuteNonQueryAsync();
}
//ошибка при не заполненных полях
else
{
label22.Visible = true;
label22.Text = "Поля не заполенны";
}
}
// изменить
private async void button1_Click(object sender, EventArgs e)
{
if (label23.Visible)
label23.Visible = false;
if (!string.IsNullOrEmpty(textBox20.Text) && !string.IsNullOrWhiteSpace(textBox20.Text)&&(
!string.IsNullOrEmpty(textBox18.Text) && !string.IsNullOrWhiteSpace(textBox18.Text)||
!string.IsNullOrEmpty(textBox17.Text) && !string.IsNullOrWhiteSpace(textBox17.Text) ||
!string.IsNullOrEmpty(textBox16.Text) && !string.IsNullOrWhiteSpace(textBox16.Text) ||
!string.IsNullOrEmpty(textBox15.Text) && !string.IsNullOrWhiteSpace(textBox15.Text) ||
!string.IsNullOrEmpty(textBox14.Text) && !string.IsNullOrWhiteSpace(textBox14.Text) ||
!string.IsNullOrEmpty(textBox13.Text) && !string.IsNullOrWhiteSpace(textBox13.Text) ||
!string.IsNullOrEmpty(textBox12.Text) && !string.IsNullOrWhiteSpace(textBox12.Text) ||
!string.IsNullOrEmpty(textBox11.Text) && !string.IsNullOrWhiteSpace(textBox11.Text) ||
!string.IsNullOrEmpty(textBox10.Text) && !string.IsNullOrWhiteSpace(textBox10.Text)))
{
SqlCommand command = new SqlCommand("UPDATE [Abiturient] SET [Имя]=@Имя WHERE[Id]=@Id",sqlConnection);
command.Parameters.AddWithValue("Id",textBox20.Text);
command.Parameters.AddWithValue("Имя", textBox16.Text);
await command.ExecuteNonQueryAsync();
}
else if(string.IsNullOrEmpty(textBox20.Text) && string.IsNullOrWhiteSpace(textBox20.Text))
{
label23.Visible = true;
label23.Text = "Поле индефикатора не заполненно";
}
else
{
label23.Visible = true;
label23.Text = "Измените хотя бы одно из полей";
}
}
private void label23_Click(object sender, EventArgs e)
{
}
}
} |
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