今の方向性で作っていっても、エクセル管理と比べて明確な利点が見つからないため。
Form1.cs
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using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.Data.OleDb; namespace 外作工程チャート { public partial class Form1 : Form { OleDbConnection con; OleDbDataAdapter da; DataTable dt; private string BuildQuery() { string query = "select " + this.textBox4.Text + " from tbl"; string join = " where"; if(this.textBox1.Text != "") { query += join + " 納期 >= #" + this.textBox1.Text + "#"; join = " and"; } if (this.textBox2.Text != "") { query += join + " 納期 <= #" + this.textBox2.Text + "#"; join = " and"; } if (this.textBox3.Text != "") { query += join + " " + this.comboBox3.Text + " like '%" + this.textBox3.Text + "%'"; } if(this.comboBox2.Text != "") { query += " order by " + this.comboBox2.Text; } return query; } private bool ConnectDatabase() { try { con = new OleDbConnection(@"provider=microsoft.jet.oledb.4.0;data source=" + Application.StartupPath + @"\dat.mdb"); con.Open(); } catch(OleDbException e) { MessageBox.Show(e.Message); return false; } finally { con.Close(); } return true; } public void DataSourceReset(string query) { da = new OleDbDataAdapter(query, con); dt = new DataTable(); dataGridView1.Columns.Clear(); try { da.Fill(dt); } catch(OleDbException) { MessageBox.Show("列が正しく取得できませんでした。表示列の設定が正しくない可能性があります。"); } dataGridView1.DataSource = dt; this.comboBox2.Items.Clear(); this.comboBox3.Items.Clear(); List<string> colsName = new List<string>(); foreach (DataColumn col in dt.Columns) { colsName.Add(col.ColumnName); } this.comboBox2.Items.AddRange(colsName.ToArray()); this.comboBox3.Items.AddRange(colsName.ToArray()); } public void InitControl() { this.radioButton1.Checked = true; this.textBox1.Leave += new EventHandler(FormatDate); this.textBox2.Leave += new EventHandler(FormatDate); this.comboBox1.Items.AddRange(new string[] { "月", "週", "日" }); this.comboBox1.Text = "日"; this.button1.Click += new EventHandler(ClickSearch); this.button2.Click += new EventHandler(ClickUpdate); this.button3.Click += new EventHandler(SearchFormClear); this.button4.Click += new EventHandler(UpdateSettings); this.dataGridView1.DataError += new DataGridViewDataErrorEventHandler(DataGridViewError); } private void SearchFormClear(object sender, EventArgs e) { this.comboBox2.Text = ""; this.comboBox3.Text = ""; this.textBox1.Text = ""; this.textBox2.Text = ""; this.textBox3.Text = ""; DataSourceReset(BuildQuery()); } private void FormatDate(object sender, EventArgs e) { DateTime dt; try { dt = DateTime.Parse(((TextBox)sender).Text); } catch(FormatException) { ((TextBox)sender).Text = ""; return; } ((TextBox)sender).Text = dt.ToString("yyyy/MM/dd"); } private void DataGridViewError(object sender, DataGridViewDataErrorEventArgs e) { MessageBox.Show("入力が正しくありません。"); e.Cancel = false; } public Form1() { InitializeComponent(); Settings settings = new Settings(this); if (!settings.InitCheck) return; if (!ConnectDatabase()) return; DataSourceReset(BuildQuery()); InitControl(); } private void ClickSearch(object sender, EventArgs e) { if (this.textBox1.Text != "") { try { DateTime dt = DateTime.Parse(this.textBox1.Text); } catch (FormatException) { MessageBox.Show("開始日(納期)が正しい日付ではありません。"); return; } } if (this.textBox2.Text != "") { try { DateTime dt = DateTime.Parse(this.textBox2.Text); } catch (FormatException) { MessageBox.Show("終了日(納期)が正しい日付ではありません。"); return; } } if (this.textBox3.Text != "" && this.comboBox3.Text == "") { MessageBox.Show("検索対象を選択してください。"); return; } DataSourceReset(BuildQuery()); } private void ClickUpdate(object sender, EventArgs e) { try { con.Open(); OleDbCommandBuilder cb = new OleDbCommandBuilder(da); da.Update(dt); } catch(InvalidOperationException) { MessageBox.Show("正しく更新できませんでした。テーブルにIDを表示させていない可能性があります。"); return; } finally { con.Close(); } dt.AcceptChanges(); DataSourceReset(BuildQuery()); MessageBox.Show("更新しました。"); } private void UpdateSettings(object sender, EventArgs e) { if (this.textBox4.Text == "") this.textBox4.Text = "*"; try { con.Open(); OleDbCommand dc = new OleDbCommand("update settings set select_string = '" + this.textBox4.Text + "' where id = 1",con); dc.ExecuteNonQuery(); } catch(InvalidOperationException) { MessageBox.Show("正しく更新できませんでした。"); return; } finally { con.Close(); } DataSourceReset(BuildQuery()); MessageBox.Show("更新しました。"); } } } |
Settings.cs
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using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.Data.OleDb; namespace 外作工程チャート { class Settings { public bool InitCheck; public Settings(Form f) { using (OleDbConnection con = new OleDbConnection(@"provider=microsoft.jet.oledb.4.0;data source=" + Application.StartupPath + @"\dat.mdb")) { try { con.Open(); OleDbCommand dc = new OleDbCommand("select * from settings", con); using(OleDbDataReader dr = dc.ExecuteReader()) { dr.Read(); Control[] c = f.Controls.Find("textBox4", true); c[0].Text = dr["select_string"].ToString(); } } catch (OleDbException) { MessageBox.Show("設定が正しく取得できませんでした。"); InitCheck = false; return; } finally { con.Close(); } } InitCheck = true; } } } |