86 lines
3.4 KiB
C#
86 lines
3.4 KiB
C#
using Npgsql;
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using System.Data;
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namespace DeviceAdmin
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{
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public partial class FormKinds : Form
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{
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NpgsqlConnection connection = Program.connection;
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private DataTable dataTable;
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private NpgsqlDataAdapter adapter;
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public FormKinds()
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{
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InitializeComponent();
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LoadGridView();
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}
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private void LoadGridView()
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{
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adapter = new NpgsqlDataAdapter("SELECT * FROM kinds;", connection);
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dataTable = new DataTable();
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adapter.Fill(dataTable);
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dataGridView.DataSource = dataTable;
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DataGridViewColumnCollection columns = dataGridView.Columns;
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columns[0].HeaderText = "ID";
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columns[1].HeaderText = "Название";
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columns[2].HeaderText = "Част. обсл.";
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}
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private void ButtonAdd_Click(object sender, EventArgs e)
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{
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NpgsqlCommand command = new NpgsqlCommand("INSERT INTO kinds VALUES (nextval('seq_kinds'), @title, @frequency);", connection);
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command.Parameters.AddWithValue("@title", textBoxTitle.Text);
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if (int.Parse(numericUpDownFrequency.Value.ToString()) != 0)
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{
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command.Parameters.AddWithValue("@frequency", int.Parse(numericUpDownFrequency.Value.ToString()));
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}
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else
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{
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command.Parameters.AddWithValue("@frequency", 12);
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}
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command.ExecuteNonQuery();
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LoadGridView();
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}
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private void ButtonEdit_Click(object sender, EventArgs e)
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{
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if (dataGridView.SelectedRows.Count > 0)
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{
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int id = (int)dataGridView.SelectedRows[0].Cells[0].Value;
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NpgsqlCommand command = new NpgsqlCommand("UPDATE kinds SET title = @title, frequency = @frequency WHERE Id = @Id", connection);
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command.Parameters.AddWithValue("@Id", id);
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command.Parameters.AddWithValue("@title", textBoxTitle.Text);
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if (int.Parse(numericUpDownFrequency.Value.ToString()) != 0)
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{
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command.Parameters.AddWithValue("@frequency", int.Parse(numericUpDownFrequency.Value.ToString()));
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}
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else
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{
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command.Parameters.AddWithValue("@frequency", 12);
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}
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command.ExecuteNonQuery();
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LoadGridView();
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}
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else
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{
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MessageBox.Show("Please select a row to edit.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
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}
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}
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private void ButtonDelete_Click(object sender, EventArgs e)
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{
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if (dataGridView.SelectedRows.Count > 0)
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{
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int id = (int)dataGridView.SelectedRows[0].Cells[0].Value;
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NpgsqlCommand command = new NpgsqlCommand("DELETE FROM kinds WHERE Id = @Id", connection);
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command.Parameters.AddWithValue("@Id", id);
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command.ExecuteNonQuery();
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LoadGridView();
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}
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else
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{
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MessageBox.Show("Please select a row to delete.", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
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}
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}
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private void ButtonRefresh_Click(object sender, EventArgs e)
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{
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LoadGridView();
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}
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}
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}
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