承認処理。ハッシュを使って見たけれど実用的ではなさそう。
Main.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; using System.IO; namespace ファイル認証フォーム { public partial class Main : Form { public Main() { InitializeComponent(); this.Text = "ファイル認証フォーム 1.0"; create_dgv(); if (!load_dgv()) return; dataGridView1.CellDoubleClick += new DataGridViewCellEventHandler(onclick_dgv); } private void click_approval(string id, string approval_name) { string qry; string msg; if (approval_name != "") { DialogResult result = MessageBox.Show("既に認証済みです。認証を解除しますか？", "", MessageBoxButtons.YesNo); if (result == DialogResult.No) return; UserPassword f = new UserPassword(approval_name); f.ShowDialog(); if (!f.approval_check) return; qry = "update dat_tbl set approval_name = null where id = " + id + ";"; msg = "解除"; } else { UserPassword f = new UserPassword(); f.ShowDialog(); if (!f.approval_check) return; qry = "update dat_tbl set approval_name = '" + f.approval_user + "' where id = " + id + ";"; msg = "登録"; } using (OleDbConnection con = new OleDbConnection(UserStrings.ds_dat)) { try { con.Open(); } catch { MessageBox.Show("データーベース接続にエラーが発生しました。"); return; } OleDbCommand cmd = new OleDbCommand(qry, con); try { cmd.ExecuteNonQuery(); } catch { MessageBox.Show("正しく" + msg + "できませんでした。"); return; } MessageBox.Show(msg + "しました。"); load_dgv(); } } private void click_delete(string id, string approval_name, string file_name) { DialogResult result = MessageBox.Show(file_name + "\n" + "削除しますか？", "", MessageBoxButtons.YesNo); if (result == DialogResult.No) return; if (approval_name == "") { row_delete(id); } else { UserPassword f = new UserPassword(approval_name); f.ShowDialog(); if (!f.approval_check) { MessageBox.Show("承認者以外は削除できません。"); return; } row_delete(id); } } private void click_open(string id, string approval_name, string file_name, string file_path) { if (!File.Exists(file_path)) { MessageBox.Show("ファイルが存在しません。"); return; } string current_hash; using (FileStream fs = new FileStream(file_path, FileMode.Open, FileAccess.Read, FileShare.Read)) { System.Security.Cryptography.MD5CryptoServiceProvider md5 = new System.Security.Cryptography.MD5CryptoServiceProvider(); byte[] bs = md5.ComputeHash(fs); md5.Clear(); StringBuilder res = new StringBuilder(); foreach (byte b in bs) { res.Append(b.ToString("x2")); } current_hash = res.ToString(); } using (OleDbConnection con = new OleDbConnection(UserStrings.ds_dat)) { try { con.Open(); } catch { MessageBox.Show("データーベース接続にエラーが発生しました。"); return; } try { string q = "select * from dat_tbl where id = " + id + ";"; OleDbCommand cmd = new OleDbCommand(q, con); using (OleDbDataReader dr = cmd.ExecuteReader()) { while (dr.Read()) { if (dr["md5"].ToString() == current_hash) { System.Diagnostics.Process.Start(Path.GetDirectoryName(file_path)); return; } } MessageBox.Show("ハッシュ値が一致しません。"); return; } } catch { MessageBox.Show("データ取得中にエラーが発生しました。"); } } } private void row_delete(string id) { using (OleDbConnection con = new OleDbConnection(UserStrings.ds_dat)) { try { con.Open(); } catch { MessageBox.Show("データーベース接続にエラーが発生しました。"); return; } string q = "delete from dat_tbl where id = " + id + ";"; OleDbCommand cmd = new OleDbCommand(q, con); try { cmd.ExecuteNonQuery(); } catch { MessageBox.Show("正しく削除できませんでした。"); return; } MessageBox.Show("削除しました。"); load_dgv(); } } private void onclick_dgv(object sender, DataGridViewCellEventArgs e) { int c = e.ColumnIndex; int r = e.RowIndex; string id = dataGridView1.Rows[r].Cells[0].Value.ToString(); string approval_name = dataGridView1.Rows[r].Cells[1].Value.ToString(); string file_name = dataGridView1.Rows[r].Cells[4].Value.ToString(); string file_path = dataGridView1.Rows[r].Cells[5].Value.ToString(); if (c == 1 && r >= 0) click_approval(id, approval_name); if (c == 4 && r >= 0) click_open(id, approval_name, file_name, file_path); if (c == 5 && r >= 0) click_delete(id, approval_name, file_name); } private void create_dgv() { string[] headers = new string[] { "", //0 "承認者 (承認)", "得意先", "種類", "ファイル名 (ファイルオープン)",//4 "パス名 (登録削除)",//5 "ハッシュ値", "更新日時" }; foreach (string h in headers) { DataGridViewTextBoxColumn col = new DataGridViewTextBoxColumn(); col.HeaderText = h; dataGridView1.Columns.Add(col); } dataGridView1.ReadOnly = true; dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect; dataGridView1.Columns[0].Visible = false; dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.AllCells; dataGridView1.ColumnHeadersDefaultCellStyle.WrapMode = DataGridViewTriState.False; dataGridView1.Font = new Font("MS UI Gothic", 12); dataGridView1.RowTemplate.Height = 32; dataGridView1.AllowUserToAddRows = false; } public bool load_dgv(string q = "select * from dat_tbl order by updated;") { dataGridView1.Rows.Clear(); using (OleDbConnection con = new OleDbConnection(UserStrings.ds_dat)) { try { con.Open(); } catch { MessageBox.Show("データーベース接続にエラーが発生しました。"); return false; } try { OleDbCommand cmd = new OleDbCommand(q, con); using (OleDbDataReader dr = cmd.ExecuteReader()) { while (dr.Read()) { dataGridView1.Rows.Add( dr["id"].ToString(), dr["approval_name"].ToString(),//1 dr["customer"].ToString(), dr["document_type"].ToString(), dr["file_name"].ToString(),//4 dr["file_path"].ToString(),//5 dr["md5"].ToString(), dr["updated"].ToString() ); } } } catch { MessageBox.Show("データ取得中にエラーが発生しました。"); return false; } } return true; } private void Form1_DragEnter(object sender, DragEventArgs e) { string[] files = (string[])e.Data.GetData(DataFormats.FileDrop, false); if (e.Data.GetDataPresent(DataFormats.FileDrop)) { foreach (string s in files) { if (!File.Exists(s)) return; } e.Effect = DragDropEffects.Copy; } } private void Form1_DragDrop(object sender, DragEventArgs e) { string[] files = (string[])e.Data.GetData(DataFormats.FileDrop,false); PathSplit f = new PathSplit(files, this); f.ShowDialog(); } } } |
UserPassword.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 ファイル認証フォーム { public partial class UserPassword : Form { public bool approval_check; public string approval_user; public UserPassword(string entered_user = "") { InitializeComponent(); if (entered_user == "") { textBox1.Enabled = true; } else { textBox1.Enabled = false; textBox1.Text = entered_user; } } private void button1_Click(object sender, EventArgs e) { using (OleDbConnection con = new OleDbConnection(UserStrings.ds_approval)) { try { con.Open(); } catch { MessageBox.Show("データーベース接続にエラーが発生しました。"); approval_check = false; return; } string user_name = textBox1.Text.Replace("\'", "\'\'"); string password = textBox2.Text.Replace("\'", "\'\'"); try { string q = "select * from approval_tbl where user_name = '" + user_name + "';"; OleDbCommand cmd = new OleDbCommand(q, con); using (OleDbDataReader dr = cmd.ExecuteReader()) { while (dr.Read()) { if (dr["password"].ToString() == password) { approval_check = true; approval_user = user_name; this.Close(); return; } } MessageBox.Show("ユーザーが存在しません。"); approval_check = false; return; } } catch { MessageBox.Show("データ取得中にエラーが発生しました。"); approval_check = false; } } } } } |
UserStrings.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; namespace ファイル認証フォーム { class UserStrings { public static string ds_dat = "provider=microsoft.jet.oledb.4.0;data source=" + Application.StartupPath + @"\dat.mdb;"; public static string ds_approval = "provider=microsoft.jet.oledb.4.0;data source=" + Application.StartupPath + @"\approval.mdb;"; } } |
PathSplit.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; using System.IO; namespace ファイル認証フォーム { public partial class PathSplit : Form { Main fm; public PathSplit(string[] files, Main f) { fm = f; InitializeComponent(); string[] path = files[0].Split('\\'); if (path.Length >= 1) comboBox3.Text = path[path.Length - 1]; if (path.Length >= 2) comboBox2.Text = path[path.Length - 2]; if (path.Length >= 3) comboBox1.Text = path[path.Length - 3]; comboBox1.Items.AddRange(path); comboBox2.Items.AddRange(path); comboBox3.Items.AddRange(path); textBox1.Text = files[0]; using (FileStream fs = new FileStream(files[0],FileMode.Open,FileAccess.Read,FileShare.Read)) { System.Security.Cryptography.MD5CryptoServiceProvider md5 = new System.Security.Cryptography.MD5CryptoServiceProvider(); byte[] bs = md5.ComputeHash(fs); md5.Clear(); StringBuilder res = new StringBuilder(); foreach (byte b in bs) { res.Append(b.ToString("x2")); } textBox2.Text = res.ToString(); } } private bool duplicate_path_chechk() { using (OleDbConnection con = new OleDbConnection(UserStrings.ds_dat)) { try { con.Open(); } catch { MessageBox.Show("データーベース接続にエラーが発生しました。"); return false; } string file_path = textBox1.Text.Replace("\'", "\'\'"); try { string q = "select * from dat_tbl where file_path = '" + file_path + "';"; OleDbCommand cmd = new OleDbCommand(q, con); using (OleDbDataReader dr = cmd.ExecuteReader()) { if (dr.Read()) { MessageBox.Show("既に登録済です。パスは重複できません。"); return false; } else { return true; } } } catch { MessageBox.Show("データ取得にエラーが発生しました。"); return false; } } } private void button1_Click(object sender, EventArgs e) { if (!duplicate_path_chechk()) { this.Close(); return; } using (OleDbConnection con = new OleDbConnection(UserStrings.ds_dat)) { try { con.Open(); } catch { MessageBox.Show("データーベース接続にエラーが発生しました。"); return; } string customer = comboBox1.Text.Replace("\'", "\'\'"); string document_type = comboBox2.Text.Replace("\'", "\'\'"); string file_name = comboBox3.Text.Replace("\'", "\'\'"); string file_path = textBox1.Text.Replace("\'","\'\'"); string md5 = textBox2.Text; string notes = textBox3.Text.Replace("\'", "\'\'"); string q = "insert into dat_tbl (customer,document_type,file_name,file_path,md5,updated,notes)" + " values ('" + customer + "','" + document_type + "','" + file_name + "','" + file_path + "','" + md5 + "','" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "','" + notes + "');"; OleDbCommand cmd = new OleDbCommand(q,con); try { cmd.ExecuteNonQuery(); } catch { MessageBox.Show("正しく登録できませんでした。"); return; } MessageBox.Show("登録しました。"); this.Close(); fm.load_dgv(); } } } } |