C# winfrom 写的一个搜索助手，可以按照标题和内容搜索，指定目录后，遍历搜索文件和子目，现在只写了支持.DOC.DOCX.XLS.XLSX.PPT.PPTX.PDF.HTML.HTM.TXT等格式的文件搜索，读取execl 内容使用的是NPOI组件，doc,html,txt 格式的使用StreamReader 流文件读取方式，ppt,pdf使用的Spire组件。
直接上代码
using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.IO; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.Threading; using System.Security.AccessControl; using NPOI.SS.UserModel; using NPOI.HSSF.UserModel; using NPOI.XSSF.UserModel; using Spire.Presentation; using Spire.Pdf; namespace Search { public partial class formMain : Form { public formMain() { InitializeComponent(); } //选择文件路径 private void button1_Click(object sender, EventArgs e) { try { FolderBrowserDialog dialog = new FolderBrowserDialog(); dialog.Description = "请选择文件路径"; if (dialog.ShowDialog() == DialogResult.OK) { string foldPath = dialog.SelectedPath; textBox1.Text = foldPath; //把选择路径存储在注册表 Application.UserAppDataRegistry.SetValue("ZMJASearchPath", foldPath); } } catch (Exception err) { MessageBox.Show(err.Message); } } private void button2_Click(object sender, EventArgs e) { try { string foldPath = textBox1.Text; if (string.IsNullOrEmpty(foldPath)) { MessageBox.Show("请选择文件路径！"); return; } string searckkey = textBox2.Text; if (string.IsNullOrEmpty(searckkey)) { MessageBox.Show("请输入搜索关键字！"); return; } string extension = comboBox1.Text; if (!string.IsNullOrEmpty(extension)) { extension = extension.ToUpper(); switch (extension) { case ".HTML": extension = ".HTML.HTM"; break; case ".DOC": extension = ".DOC.DOCX"; break; case ".XLS": extension = ".XLS.XLSX"; break; case ".PPT": extension = ".PPT.PPTX"; break; default: break; } } else { extension = ".DOC.DOCX.XLS.XLSX.PPT.PPTX.PDF.HTML.HTM.TXT"; } dataGridView1.Rows.Clear(); listDirectory(@foldPath, extension, comboBox2.Text, searckkey); lbmessage.Text = ""; MessageBox.Show("搜索完毕"); } catch (Exception err) { MessageBox.Show(err.Message); } } /// <summary> /// 列出path路径对应的文件夹中的子文件夹和文件 /// 然后再递归列出子文件夹内的文件和文件夹 /// </summary> /// <param>需要搜索文件夹的路径</param> public void listDirectory(string path,string extension, string coding,string searckkey) { DirectoryInfo theFolder = new DirectoryInfo(@path); DirectorySecurity s = new DirectorySecurity(path, AccessControlSections.Access); //判断目录是否 可以访问 if (!s.AreAccessRulesProtected) { foreach (FileInfo file in theFolder.GetFiles()) { if (string.IsNullOrEmpty(extension) || extension.Contains(file.Extension.ToUpper())) { lbmessage.Text = "正在搜索文件：" + path + "\\" + file.Name; Application.DoEvents(); #region 仅检索标题 if (comboBox3.Text == "仅标题") { if (file.Name.Contains(searckkey)) { int index = this.dataGridView1.Rows.Add(); this.dataGridView1.Rows[index].Cells[0].Value = index + 1; this.dataGridView1.Rows[index].Cells[1].Value = file.Name; this.dataGridView1.Rows[index].Cells[2].Value = path + "\\" + file.Name; break; } } #endregion #region 标题和内容都检索 else { #region 检索判断标题 //默认检索 先搜索标题是否有，如果有，则退出循环，如果没有，再检索内容 if (file.Name.Contains(searckkey)) { int index = this.dataGridView1.Rows.Add(); this.dataGridView1.Rows[index].Cells[0].Value = index + 1; this.dataGridView1.Rows[index].Cells[1].Value = file.Name; this.dataGridView1.Rows[index].Cells[2].Value = path + "\\" + file.Name; break; } #endregion using (FileStream fs = new FileStream(path + "\\" + file.Name, FileMode.Open, FileAccess.Read)) { #region 读取Execl if (file.Extension.ToUpper().Contains(".XLS")) { try { IWorkbook workbook = null;//全局workbook ISheet sheet;//sheet switch (file.Extension) { //xls是03，用HSSFWorkbook打开，.xlsx是07或者10用XSSFWorkbook打开 case ".xls": workbook = new HSSFWorkbook(fs); break; case ".xlsx": workbook = new XSSFWorkbook(fs); break; default: break; } fs.Close();//关闭文件流 if (workbook != null) { int count = workbook.NumberOfSheets; bool bo = false; //bo初始化为假 for (int index = 0; index < count; index++) { if (bo)//如果bo为真 break;//退出第一层循环 sheet = workbook.GetSheetAt(index);//读取到指定的sheet //遍历读取cell for (int i = sheet.FirstRowNum; i <= sheet.LastRowNum; i++) { if (bo)//如果bo为真 break;//退出第二层循环 IRow row = sheet.GetRow(i);//得到一行 if (row != null) { for (int j = row.FirstCellNum; j < row.LastCellNum; j++) { ICell cell = row.GetCell(j);//得到cell if (cell != null)//如果cell为null，则赋值为空 { if (row.GetCell(j).ToString().Contains(searckkey)) { int GridIndex = this.dataGridView1.Rows.Add(); this.dataGridView1.Rows[GridIndex].Cells[0].Value = GridIndex + 1; this.dataGridView1.Rows[GridIndex].Cells[1].Value = file.Name; this.dataGridView1.Rows[GridIndex].Cells[2].Value = path + "\\" + file.Name; bo = true;//bo赋为真 break;//退出第三层循环 } } } } } } } //释放资源 workbook = null; sheet = null; } catch (Exception err) { //MessageBox.Show(err.Message); } } #endregion #region 读取ppt内容 else if (file.Extension.ToUpper().Contains(".PPT")) { try { //初始化一个Presentation类实例，并加载文档 Presentation ppt = new Presentation(); ppt.LoadFromFile(path + "\\" + file.Name); bool bo = false; foreach (ISlide slide in ppt.Slides) { if (bo)//如果bo为真 break;//退出第一层循环 foreach (Spire.Presentation.IShape shape in slide.Shapes) { if (bo)//如果bo为真 break;//退出第一层循环 if (shape is IAutoShape) { foreach (TextParagraph tp in (shape as IAutoShape).TextFrame.Paragraphs) { if (tp.Text.Contains(searckkey)) { int GridIndex = this.dataGridView1.Rows.Add(); this.dataGridView1.Rows[GridIndex].Cells[0].Value = GridIndex + 1; this.dataGridView1.Rows[GridIndex].Cells[1].Value = file.Name; this.dataGridView1.Rows[GridIndex].Cells[2].Value = path + "\\" + file.Name; bo = true;//bo赋为真 break;//退出第三层循环 } } } } } ppt = null; //释放资源 } catch (Exception err) { //MessageBox.Show(err.Message); } } #endregion #region 读取pdf文件 else if (file.Extension.ToUpper().Contains(".PDF")) { try { PdfDocument pdf= new PdfDocument(); pdf.LoadFromFile(@path + "\\" + file.Name); foreach (PdfPageBase page in pdf.Pages) { string content = page.ExtractText(); if (content.Contains(searckkey)) { int GridIndex = this.dataGridView1.Rows.Add(); this.dataGridView1.Rows[GridIndex].Cells[0].Value = GridIndex + 1; this.dataGridView1.Rows[GridIndex].Cells[1].Value = file.Name; this.dataGridView1.Rows[GridIndex].Cells[2].Value = path + "\\" + file.Name; break; } } pdf = null;//释放资源 } catch (Exception err) { } } #endregion #region 读取其他文本文件 else { Encoding codingType = Encoding.Default; if (!string.IsNullOrEmpty(coding)) { codingType = Encoding.GetEncoding(coding.ToUpper()); } else { codingType = common.GetType(path + "\\" + file.Name); } StreamReader sr = new StreamReader(fs, codingType); String str; while ((str = sr.ReadLine()) != null) { if (str.Contains(searckkey)) { int index = this.dataGridView1.Rows.Add(); this.dataGridView1.Rows[index].Cells[0].Value = index + 1; this.dataGridView1.Rows[index].Cells[1].Value = file.Name; this.dataGridView1.Rows[index].Cells[2].Value = path + "\\" + file.Name; sr.Close(); fs.Close(); break; } } } #endregion } } #endregion } } } //遍历文件夹 foreach (DirectoryInfo NextFolder in theFolder.GetDirectories()) { if ((NextFolder.Attributes & FileAttributes.Hidden) != FileAttributes.Hidden) { listDirectory(NextFolder.FullName,extension, coding,searckkey); } } } private void OpenFolderAndSelectFile(String fileFullName) { System.Diagnostics.ProcessStartInfo psi = new System.Diagnostics.ProcessStartInfo("Explorer.exe"); psi.Arguments = "/e,/select," + fileFullName; System.Diagnostics.Process.Start(psi); } private void dataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e) { } //删除文件，这里是一个伪删除了，直接把文件移动到deleteData文件夹中，如果需要删除手动删除 private void button3_Click(object sender, EventArgs e) { try { int count = 0; int totalCount = dataGridView1.RowCount; string foldPath = textBox1.Text; string filderPath = @foldPath + "\\DeleteData"; string fileName = ""; if (Directory.Exists(filderPath) == false) { //如果不存 Directory.CreateDirectory(filderPath); } for (int i = 0; i < dataGridView1.RowCount; i++) { lbmessage.Text = "正在删除文件：" + dataGridView1.Rows[i].Cells[2].Value.ToString(); Application.DoEvents(); count += 1; fileName = dataGridView1.Rows[i].Cells[1].Value.ToString(); File.Move(dataGridView1.Rows[i].Cells[2].Value.ToString(), filderPath + "\\" + fileName); } dataGridView1.Rows.Clear(); lbmessage.Text = ""; MessageBox.Show("删除完毕"); } catch (Exception err) { MessageBox.Show(err.Message); } finally { lbmessage.Text = ""; } } //清空列表 private void button4_Click(object sender, EventArgs e) { dataGridView1.Rows.Clear(); } private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) { string extension = comboBox1.Text; if (!string.IsNullOrEmpty(extension)) { extension = extension.ToUpper(); switch (extension) { case ".HTML": comboBox2.SelectedIndex = comboBox2.Items.IndexOf("UTF-8"); break; case ".DOC": comboBox2.SelectedIndex = comboBox2.Items.IndexOf("Unicode"); break; default: break; } } } //默认加载 private void formMain_Load(object sender, EventArgs e) { //默认是全部搜索模式 comboBox3.SelectedText = "全部"; //从注册表把选择路径读取出来 textBox1.Text = Application.UserAppDataRegistry.GetValue("ZMJASearchPath") as string; } //双击单元格打开文件所在位置 private void dataGridView1_CellDoubleClick(object sender, DataGridViewCellEventArgs e) { try { if (e.ColumnIndex < 0 || e.RowIndex < 0) { MessageBox.Show("请选择要打开的文件"); return; } int index = dataGridView1.CurrentCell.RowIndex; System.Diagnostics.ProcessStartInfo psi = new System.Diagnostics.ProcessStartInfo("Explorer.exe"); psi.Arguments = "/e,/select," + dataGridView1.Rows[index].Cells[2].Value.ToString(); System.Diagnostics.Process.Start(psi); } catch (Exception err) { MessageBox.Show(err.Message); } } //右键快捷菜单打开文件所在位置 private void 打开文件所在位置ToolStripMenuItem_Click(object sender, EventArgs e) { try { if (dataGridView1.CurrentRow == null) { MessageBox.Show("请选择要打开的文件"); return; } int index = dataGridView1.CurrentCell.RowIndex; System.Diagnostics.ProcessStartInfo psi = new System.Diagnostics.ProcessStartInfo("Explorer.exe"); psi.Arguments = "/e,/select," + dataGridView1.Rows[index].Cells[2].Value.ToString(); System.Diagnostics.Process.Start(psi); } catch (Exception err) { MessageBox.Show(err.Message); } } //双击文本框选择路径 private void textBox1_DoubleClick(object sender, EventArgs e) { try { FolderBrowserDialog dialog = new FolderBrowserDialog(); dialog.Description = "请选择文件路径"; if (dialog.ShowDialog() == DialogResult.OK) { string foldPath = dialog.SelectedPath; textBox1.Text = foldPath; //把选择路径存储在注册表 Application.UserAppDataRegistry.SetValue("ZMJASearchPath", foldPath); } } catch (Exception err) { MessageBox.Show(err.Message); } } } }