C# winfrom 写的一个搜索助手,可以按照标题和内容搜索,支持doc,xls,ppt,pdf,txt等格式的文件搜索
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2023-03-31 10:12:53
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Str ......
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 name="path">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); } } } }
参考博客园里获取文件编码格式的类
using system; using system.collections.generic; using system.io; using system.linq; using system.text; using system.threading.tasks; namespace search { public class common { //编码问题目前为止,基本上没人解决,就连windows的ie的自动识别有时还识别错编码呢 //如果文件有bom则判断,如果没有就用系统默认编码,缺点:没有bom的非系统编码文件会显示乱码。 //调用方法: common.gettype(filename) public static system.text.encoding gettype(string file_name) { using (filestream fs = new filestream(file_name, filemode.open, fileaccess.read)) { system.text.encoding r = gettype(fs); fs.close(); return r; } } /// <summary> /// 通过给定的文件流,判断文件的编码类型 /// </summary> /// <param name="fs">文件流</param> /// <returns>文件的编码类型</returns> public static system.text.encoding gettype(filestream fs) { byte[] unicode = new byte[] { 0xff, 0xfe, 0x41 }; byte[] unicodebig = new byte[] { 0xfe, 0xff, 0x00 }; byte[] utf8 = new byte[] { 0xef, 0xbb, 0xbf }; //带bom encoding reval = encoding.default; binaryreader r = new binaryreader(fs, system.text.encoding.default); int i; int.tryparse(fs.length.tostring(), out i); byte[] ss = r.readbytes(i); if (isutf8bytes(ss) || (ss[0] == 0xef && ss[1] == 0xbb && ss[2] == 0xbf)) { reval = encoding.utf8; } else if (ss[0] == 0xfe && ss[1] == 0xff && ss[2] == 0x00) { reval = encoding.bigendianunicode; } else if (ss[0] == 0xff && ss[1] == 0xfe && ss[2] == 0x41) { reval = encoding.unicode; } r.close(); return reval; } /// <summary> /// 判断是否是不带 bom 的 utf8 格式 /// </summary> /// <param name=“data“></param> /// <returns></returns> private static bool isutf8bytes(byte[] data) { int charbytecounter = 1; //计算当前正分析的字符应还有的字节数 byte curbyte; //当前分析的字节. for (int i = 0; i < data.length; i++) { curbyte = data[i]; if (charbytecounter == 1) { if (curbyte >= 0x80) { //判断当前 while (((curbyte <<= 1) & 0x80) != 0) { charbytecounter++; } //标记位首位若为非0 则至少以2个1开始 如:110xxxxx...........1111110x if (charbytecounter == 1 || charbytecounter > 6) { return false; } } } else { //若是utf-8 此时第一位必须为1 if ((curbyte & 0xc0) != 0x80) { return false; } charbytecounter--; } } if (charbytecounter > 1) { throw new exception("非预期的byte格式"); } return true; } } }
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