C#訪問文件路徑通用類
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace Utility
{
/// <summary> /// @Author:梁繼龍 /// @Date：2012/8/1 /// @Email:jilongliang1988ora@163.com /// @Description:文件處理類 /// </summary> public class AccessDirFileHelper { public static AccessDirFileHelper instance = null; private static readonly object lockObj = new object(); protected static System.Reflection.Assembly assembly = null; //反射 /// <summary> /// 單例模式 /// </summary> /// <returns></returns> public static AccessDirFileHelper GetInstance() { //lock (AccessFileHelper.instance){ } if (instance == null) { lock (lockObj) { instance = new AccessDirFileHelper(); } } return instance; } /// <summary> /// 獲取當前進程的完整路徑，包含文件名(進程名) /// result: X:\xxx\xxx\xxx.exe (.exe文件所在的目錄+.exe文件名 /// </summary> /// <returns></returns> public string GetLocalProcessFileName() { try { return this.GetType().Assembly.Location; } catch (Exception ex) { throw ex; } } /// <summary> /// 獲取新的 Process 組件并將其與當前活動的進程關聯的主模塊的完整路徑，包含文件名(進程名). //result: X:\xxx\xxx\xxx.exe (.exe文件所在的目錄+.exe文件名) /// </summary> /// <returns></returns> public string GetCurrentProcessFileNamePath() { try { return System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName; } catch (Exception ex) { throw ex; } } /// <summary> /// 獲取和設置當前目錄（即該進程從中啟動的目錄）的完全限定路徑. /// result: X:\xxx\xxx (.exe文件所在的目錄) /// </summary> /// <returns></returns> public String GetCurrentEnvironmentDirectoryPath() { try { return System.Environment.CurrentDirectory; } catch (Exception ex) { throw ex; } } /// <summary> /// 獲取當前 Thread 的當前應用程序域的基目錄，它由程序集沖突解決程序用來探測程序集。 ///string str = System.AppDomain.CurrentDomain.BaseDirectory; ///result: X:\xxx\xxx\ (.exe文件所在的目錄+"\") ///Example：用來判斷winfrom會少一個Debug E:\\ASP.NET\\MyApp\\WebApp\\bin\\Debug\\bin\\Utility.dll" web ///Example：用來判斷winfrom會多一個Debug E:\\ASP.NET\\MyApp\\WinApp\\bin\\Debug\\Utility.dll" winform ///此方法一般判斷一個解決方案啟動是web還是winform讀取文件(dll，config,txt等..)看情況定 /// </summary> public string GetCurrentDomainBaseDirectory() { try { //效果一樣 //System.Threading.Thread.GetDomain().BaseDirectory return System.AppDomain.CurrentDomain.BaseDirectory; } catch (Exception e) { throw e; } } /// <summary> /// 獲取和設置包含該應用程序的目錄的名稱。 ///string str = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase; ///result: X:\xxx\xxx\ (.exe文件所在的目錄+"\") /// </summary> /// <returns></returns> public string GetCurrentDomainSetupInformationName() { try { return System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase; } catch (Exception ex) { throw ex; } } /// <summary> /// 獲取啟動了應用程序的可執行文件的路徑，不包括可執行文件的名稱 /// string str = System.Windows.Forms.Application.StartupPath; /// result: X:\xxx\xxx (.exe文件所在的目錄) /// </summary> /// <returns></returns> public string GetWindowsApplicationStartupPath() { try { return System.Windows.Forms.Application.StartupPath; } catch (Exception e) { throw e; } } /// <summary> ///獲取啟動了應用程序的可執行文件的路徑，包括可執行文件的名稱。 ///string str = System.Windows.Forms.Application.ExecutablePath; ///result: X:\xxx\xxx\xxx.exe (.exe文件所在的目錄+.exe文件名) /// </summary> /// <returns></returns> public string GetWindowsExecutablePath() { try { return System.Windows.Forms.Application.ExecutablePath; } catch (Exception ex) { throw ex; } } /// <summary> /// 獲取應用程序的當前工作目錄(不可靠) /// /string str = System.IO.Directory.GetCurrentDirectory(); /// result: X:\xxx\xxx (.exe文件所在的目錄) /// </summary> /// <returns></returns> public string GetCurrentDirectory() { try { return System.IO.Directory.GetCurrentDirectory(); } catch (Exception ex) { throw ex; } } /// <summary> /// 這個方法的意思是:在同一個解決方案里面有兩個工程,啟動的時候 /// 去判斷哪個工程是Winform或者是Web的配置 ///Example：E:\\ASP.NET\\MyApp\\WinApp\\bin\\Debug\\MyApp.vshost.exe.Config" //winform ///Example："E:\\ASP.NET\\MyApp\\WebApp\\web.config" //web ///從后面的配置截取Example:String index=Path3.Substring(config.Length - 8);截取 ///后面字符串判去判斷,最好把都轉換成小寫或者大寫 ///index.ToUpper()="E.CONFIG" / index.ToLower()=="e.config" /// </summary> /// <returns></returns> public System.Reflection.Assembly GetCurrentDomainConfigurationFile(string executeWinformConfig, string executeWebConfig) { try { string config = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile; string index = config.Substring(config.Length - 8); if (index.ToLower() == "e.config") //把截取到的字符串轉為為小寫 { assembly = System.Reflection.Assembly.LoadFile(executeWinformConfig); //加載dll文件 } if (index.ToLower() == "b.config") { assembly = System.Reflection.Assembly.LoadFile(executeWebConfig); //加載dll文件 } return assembly; } catch (Exception ex) { throw ex; } } /// <summary> /// 無參數的GetCurrentDomainConfigurationFile方法 /// GetCurrentDomainConfigurationFile /// </summary> /// <returns></returns> public string GetCurrentDomainConfigurationFile() { try { return AppDomain.CurrentDomain.SetupInformation.ConfigurationFile; } catch (Exception ex) { throw ex; } } /// <summary> /// Application.StartupPath與AppDomain.CurrentDomain.BaseDirectory都是判斷 /// 當前啟動的工程,并體現能找到 /// Example：E:\\ASP.NET\\MyApp\\MyApp\\bin\\Debug路徑下面,唯有不同的就是 /// AppDomain.CurrentDomain.BaseDirectory多了個 \\ /// Application.StartupPath而且是System.Windows.Forms /// </summary> /// <returns></returns> public string GetStartupPath() { try { return System.Windows.Forms.Application.StartupPath; } catch (Exception) { throw; } } /// <summary> /// 獲取文件的大小,一般指文件有多少個字節 /// </summary> /// <param name="fileName"></param> /// <returns></returns> public string GetFileSize(string fileName) { try { if (File.Exists(fileName)) { return Convert.ToString(new FileInfo(fileName).Length); } else return fileName; } catch (Exception) { throw; } } ///<summary> ///在卸載程序獲取系統安裝的目錄： ///System.Reflection.Assembly curPath = System.Reflection.Assembly.GetExecutingAssembly(); /// string path=curPath.Location;//得到安裝程序類SetupLibrary文件的路徑，獲取這個文件路徑 ///所在的目錄即得到安裝程序的目錄; ///</summary> /// <returns></returns> public String GetExecutingAssemblyDirectory() { try { System.Reflection.Assembly curPath = System.Reflection.Assembly.GetExecutingAssembly(); string path = curPath.Location; return path; } catch (Exception ex) { throw ex; } } #region /// <summary> /// 創建目錄 /// </summary> /// <param name="dir">此地路徑相對站點而言</param> public static void CreateDir(string dir) { if (dir.Length == 0) return; if (!System.IO.Directory.Exists(System.Web.HttpContext.Current.Server.MapPath(dir))) System.IO.Directory.CreateDirectory(System.Web.HttpContext.Current.Server.MapPath(dir)); } /// <summary> /// 創建目錄路徑 /// </summary> /// <param name="folderPath">物理路徑</param> public static void CreateFolder(string folderPath) { if (!System.IO.Directory.Exists(folderPath)) System.IO.Directory.CreateDirectory(folderPath); } /// <summary> /// 刪除目錄 /// </summary> /// <param name="dir">此地路徑相對站點而言</param> public static void DeleteDir(string dir) { if (dir.Length == 0) return; if (System.IO.Directory.Exists(System.Web.HttpContext.Current.Server.MapPath(dir))) System.IO.Directory.Delete(System.Web.HttpContext.Current.Server.MapPath(dir), true); } /// <summary> /// 判斷文件是否存在 /// </summary> /// <param name="file">格式:a/b.htm,相對根目錄</param> /// <returns></returns> public static bool FileExists(string file) { if (File.Exists(System.Web.HttpContext.Current.Server.MapPath(file))) return true; else return false; } /// <summary> /// 讀取文件內容 /// </summary> /// <param name="file">格式:a/b.htm,相對根目錄</param> /// <returns></returns> public static string ReadFile(string file) { if (!FileExists(file)) return ""; try { System.IO.StreamReader sr = new System.IO.StreamReader(System.Web.HttpContext.Current.Server.MapPath(file), System.Text.Encoding.UTF8); string str = sr.ReadToEnd(); sr.Close(); return str; } catch (Exception ex) { throw ex; } } /// <summary> /// 保存為不帶Bom的文件 /// </summary> /// <param name="TxtStr"></param> /// <param name="tempDir">格式:a/b.htm,相對根目錄</param> public static void SaveFile(string TxtStr, string tempDir) { SaveFile(TxtStr, tempDir, true); } /// <summary> /// 保存文件內容,自動創建目錄 /// </summary> /// <param name="TxtStr"></param> /// <param name="tempDir">格式:a/b.htm,相對根目錄</param> /// <param name="noBom"></param> public static void SaveFile(string TxtStr, string tempDir, bool noBom) { try { CreateDir(GetFolderPath(true, tempDir)); System.IO.StreamWriter sw; if (noBom) sw = new System.IO.StreamWriter(System.Web.HttpContext.Current.Server.MapPath(tempDir), false, new System.Text.UTF8Encoding(false)); else sw = new System.IO.StreamWriter(System.Web.HttpContext.Current.Server.MapPath(tempDir), false, System.Text.Encoding.UTF8); sw.Write(TxtStr); sw.Close(); } catch (Exception ex) { throw ex; } } /// <summary> /// 復制文件 /// 這個方法在6.0版本后改寫，雖看似比前面的版本冗長，但避免了file2文件一直被占用的問題 /// </summary> /// <param name="file1"></param> /// <param name="file2"></param> /// <param name="overwrite">如果已經存在是否覆蓋？</param> public static void CopyFile(string file1, string file2, bool overwrite) { if (System.IO.File.Exists(System.Web.HttpContext.Current.Server.MapPath(file1))) { if (overwrite) System.IO.File.Copy(System.Web.HttpContext.Current.Server.MapPath(file1), System.Web.HttpContext.Current.Server.MapPath(file2), true); else { if (!System.IO.File.Exists(System.Web.HttpContext.Current.Server.MapPath(file2))) System.IO.File.Copy(System.Web.HttpContext.Current.Server.MapPath(file1), System.Web.HttpContext.Current.Server.MapPath(file2)); } } } /// <summary> /// 刪除文件 /// </summary> /// <param name="file">此地路徑相對程序路徑而言</param> public static void DeleteFile(string file) { if (file.Length == 0) return; if (System.IO.File.Exists(System.Web.HttpContext.Current.Server.MapPath(file))) System.IO.File.Delete(System.Web.HttpContext.Current.Server.MapPath(file)); } /// <summary> /// 獲得文件的目錄路徑 /// </summary> /// <param name="filePath">文件路徑</param> /// <returns>以\結尾</returns> public static string GetFolderPath(string filePath) { return GetFolderPath(false, filePath); } /// <summary> /// 獲得文件的目錄路徑 /// </summary> /// <param name="isUrl">是否是網址</param> /// <param name="filePath">文件路徑</param> /// <returns>以\或/結尾</returns> public static string GetFolderPath(bool isUrl, string filePath) { if (isUrl) return filePath.Substring(0, filePath.LastIndexOf("/") + 1); else return filePath.Substring(0, filePath.LastIndexOf("\\") + 1); } /// <summary> /// 獲得文件的名稱 /// </summary> /// <param name="filePath"></param> /// <returns></returns> public static string GetFileName(string filePath) { return GetFileName(false, filePath); } /// <summary> /// 獲得文件的名稱 /// </summary> /// <param name="isUrl">是否是網址</param> /// <param name="filePath"></param> /// <returns></returns> public static string GetFileName(bool isUrl, string filePath) { if (isUrl) return filePath.Substring(filePath.LastIndexOf("/") + 1, filePath.Length - filePath.LastIndexOf("/") - 1); else return filePath.Substring(filePath.LastIndexOf("\\") + 1, filePath.Length - filePath.LastIndexOf("\\") - 1); } /// <summary> /// 獲得文件的后綴 /// 不帶點，小寫 /// </summary> /// <param name="filePath"></param> /// <returns></returns> public static string GetFileExt(string filePath) { return filePath.Substring(filePath.LastIndexOf(".") + 1, filePath.Length - filePath.LastIndexOf(".") - 1).ToLower(); } /// <summary> /// 目錄拷貝 /// </summary> /// <param name="OldDir"></param> /// <param name="NewDir"></param> public static void CopyDir(string OldDir, string NewDir) { DirectoryInfo OldDirectory = new DirectoryInfo(OldDir); DirectoryInfo NewDirectory = new DirectoryInfo(NewDir); CopyDir(OldDirectory, NewDirectory); } private static void CopyDir(DirectoryInfo OldDirectory, DirectoryInfo NewDirectory) { string NewDirectoryFullName = NewDirectory.FullName + "\\" + OldDirectory.Name; if (!Directory.Exists(NewDirectoryFullName)) Directory.CreateDirectory(NewDirectoryFullName); FileInfo[] OldFileAry = OldDirectory.GetFiles(); foreach (FileInfo aFile in OldFileAry) File.Copy(aFile.FullName, NewDirectoryFullName + "\\" + aFile.Name, true); DirectoryInfo[] OldDirectoryAry = OldDirectory.GetDirectories(); foreach (DirectoryInfo aOldDirectory in OldDirectoryAry) { DirectoryInfo aNewDirectory = new DirectoryInfo(NewDirectoryFullName); CopyDir(aOldDirectory, aNewDirectory); } } /// <summary> /// 目錄刪除 /// </summary> /// <param name="OldDir"></param> public static void DelDir(string OldDir) { DirectoryInfo OldDirectory = new DirectoryInfo(OldDir); OldDirectory.Delete(true); } /// <summary> /// 目錄剪切 /// </summary> /// <param name="OldDirectory"></param> /// <param name="NewDirectory"></param> public static void CopyAndDelDir(string OldDirectory, string NewDirectory) { CopyDir(OldDirectory, NewDirectory); DelDir(OldDirectory); } /// <summary> /// 文件下載 /// </summary> /// <param name="_Request"></param> /// <param name="_Response"></param> /// <param name="_fullPath">源文件路徑</param> /// <param name="_speed"></param> /// <returns></returns> public static bool DownloadFile(System.Web.HttpRequest _Request, System.Web.HttpResponse _Response, string _fullPath, long _speed) { string _fileName = GetFileName(false, _fullPath); try { FileStream myFile = new FileStream(_fullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); BinaryReader br = new BinaryReader(myFile); try { _Response.AddHeader("Accept-Ranges", "bytes"); _Response.Buffer = false; long fileLength = myFile.Length; long startBytes = 0; double pack = 10240; //10K bytes //int sleep = 200; //每秒5次 即5*10K bytes每秒 int sleep = (int)Math.Floor(1000 * pack / _speed) + 1; if (_Request.Headers["Range"] != null) { _Response.StatusCode = 206; string[] range = _Request.Headers["Range"].Split(new char[] { '=', '-' }); startBytes = Convert.ToInt64(range[1]); } _Response.AddHeader("Content-Length", (fileLength - startBytes).ToString()); _Response.AddHeader("Connection", "Keep-Alive"); _Response.ContentType = "application/octet-stream"; _Response.AddHeader("Content-Disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(_fileName, System.Text.Encoding.UTF8)); br.BaseStream.Seek(startBytes, SeekOrigin.Begin); int maxCount = (int)Math.Floor((fileLength - startBytes) / pack) + 1; for (int i = 0; i < maxCount; i++) { if (_Response.IsClientConnected) { _Response.BinaryWrite(br.ReadBytes(int.Parse(pack.ToString()))); System.Threading.Thread.Sleep(sleep); } else { i = maxCount; } } } catch { return false; } finally { br.Close(); myFile.Close(); } } catch { return false; } return true; } #endregion }} </pre>
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