c# 文件及目录操作类

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c# 文件及目录操作类

夜来风雨香 · 2016-10-08 · via 博客园 - 夜来风雨香

18位长度的计时周期数： DateTime.Now.Ticks.ToString()

多数是收集而来，加上测试感觉很不错，分享一下或许有些帮助吧：

引用：

using System;
using System.Text;
using System.IO;

主代码：

namespace PorjectTools
{
public static class FileHelper
{
#region 检测指定目录是否存在
public static bool IsExistDirectory(string directoryPath)
{
return Directory.Exists(directoryPath);
}
#endregion
#region 检测指定文件是否存在
public static bool IsExistFile(string filePath)
{
return File.Exists(filePath);
}
#endregion
#region 检测指定目录是否为空
public static bool IsEmptyDirectory(string directoryPath)
{
try
{
string[] fileNames = GetFileNames(directoryPath);
if (fileNames.Length > 0)
{
return false;
}
string[] directoryNames = GetDirectories(directoryPath);
return directoryNames.Length <= 0;
}
catch
{
return false;
}
}
#endregion
#region 检测指定目录中是否存在指定的文件
public static bool Contains(string directoryPath, string searchPattern)
{
try
{
string[] fileNames = GetFileNames(directoryPath, searchPattern, false);
return fileNames.Length != 0;
}
catch
{
return false;
}
}
public static bool Contains(string directoryPath, string searchPattern, bool isSearchChild)
{
try
{
string[] fileNames = GetFileNames(directoryPath, searchPattern, true);
return fileNames.Length != 0;
}
catch
{
return false;
}
}
#endregion
#region 创建一个目录
public static void CreateDirectory(string directoryPath)
{
if (!IsExistDirectory(directoryPath))
{
Directory.CreateDirectory(directoryPath);
}
}
#endregion
#region 创建一个文件
public static bool CreateFile(string filePath)
{
try
{
if (!IsExistFile(filePath))
{
FileInfo file = new FileInfo(filePath);
FileStream fs = file.Create();
fs.Close();
}
}
catch
{
return false;
}
return true;
}
public static bool CreateFile(string filePath, byte[] buffer)
{
try
{
if (!IsExistFile(filePath))
{
FileInfo file = new FileInfo(filePath);
FileStream fs = file.Create();
fs.Write(buffer, 0, buffer.Length);
fs.Close();
}
}
catch
{
return false;
}
return true;
}
#endregion
#region 获取文本文件的行数
public static int GetLineCount(string filePath)
{
string[] rows = File.ReadAllLines(filePath);
return rows.Length;
}
#endregion
#region 获取一个文件的长度
public static int GetFileSize(string filePath)
{
FileInfo fi = new FileInfo(filePath);
return (int)fi.Length;
}
public static double GetFileSizeByKB(string filePath)
{
FileInfo fi = new FileInfo(filePath);
long size = fi.Length / 1024;
return double.Parse(size.ToString());
}
public static double GetFileSizeByMB(string filePath)
{
FileInfo fi = new FileInfo(filePath);
long size = fi.Length / 1024 / 1024;
return double.Parse(size.ToString());
}
#endregion
#region 获取指定目录中的文件列表
public static string[] GetFileNames(string directoryPath)
{
if (!IsExistDirectory(directoryPath))
{
throw new FileNotFoundException();
}
return Directory.GetFiles(directoryPath);
}
public static string[] GetFileNames(string directoryPath, string searchPattern, bool isSearchChild)
{
if (!IsExistDirectory(directoryPath))
{
throw new FileNotFoundException();
}
try
{
return Directory.GetFiles(directoryPath, searchPattern, isSearchChild ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly);
}
catch
{
return null;
}
}
#endregion
#region 获取指定目录中的子目录列表
public static string[] GetDirectories(string directoryPath)
{
try
{
return Directory.GetDirectories(directoryPath);
}
catch
{
return null;
}
}
public static string[] GetDirectories(string directoryPath, string searchPattern, bool isSearchChild)
{
try
{
return Directory.GetDirectories(directoryPath, searchPattern, isSearchChild ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly);
}
catch
{
throw null;
}
}
#endregion
#region 向文本文件写入内容
public static void WriteText(string filePath, string content)
{
File.WriteAllText(filePath, content);
}
#endregion
#region 向文本文件的尾部追加内容
public static void AppendText(string filePath, string content)
{
File.AppendAllText(filePath, content);
}
#endregion
#region 将现有文件的内容复制到新文件中
public static void Copy(string sourceFilePath, string destFilePath)
{
File.Copy(sourceFilePath, destFilePath, true);
}
#endregion
#region 将文件移动到指定目录
public static void Move(string sourceFilePath, string descDirectoryPath)
{
string sourceFileName = GetFileName(sourceFilePath);
if (IsExistDirectory(descDirectoryPath))
{
if (IsExistFile(descDirectoryPath + "\\" + sourceFileName))
{
DeleteFile(descDirectoryPath + "\\" + sourceFileName);
}
File.Move(sourceFilePath, descDirectoryPath + "\\" + sourceFileName);
}
}
#endregion
#region 将流读取到缓冲区中
public static byte[] StreamToBytes(Stream stream)
{
try
{
byte[] buffer = new byte[stream.Length];
stream.Read(buffer, 0, int.Parse(stream.Length.ToString()));
return buffer;
}
catch
{
return null;
}
finally
{
stream.Close();
}
}
#endregion
#region 将文件读取到缓冲区中
public static byte[] FileToBytes(string filePath)
{
int fileSize = GetFileSize(filePath);
byte[] buffer = new byte[fileSize];
FileInfo fi = new FileInfo(filePath);
FileStream fs = fi.Open(FileMode.Open);
try
{
fs.Read(buffer, 0, fileSize);
return buffer;
}
catch
{
return null;
}
finally
{
fs.Close();
}
}
#endregion
#region 将文件读取到字符串中
public static string FileToString(string filePath)
{
return FileToString(filePath, Encoding.Default);
}
public static string FileToString(string filePath, Encoding encoding)
{
StreamReader reader = new StreamReader(filePath, encoding);
try
{
return reader.ReadToEnd();
}
catch
{
return string.Empty;
}
finally
{
reader.Close();
}
}
#endregion
#region 从文件的绝对路径中获取文件名( 包含扩展名 )
public static string GetFileName(string filePath)
{
FileInfo fi = new FileInfo(filePath);
return fi.Name;
}
#endregion
#region 从文件的绝对路径中获取文件名( 不包含扩展名 )
public static string GetFileNameNoExtension(string filePath)
{
FileInfo fi = new FileInfo(filePath);
return fi.Name.Split('.')[0];
}
#endregion
#region 从文件的绝对路径中获取扩展名
public static string GetExtension(string filePath)
{
FileInfo fi = new FileInfo(filePath);
return fi.Extension;
}
#endregion
#region 清空指定目录
public static void ClearDirectory(string directoryPath)
{
if (IsExistDirectory(directoryPath))
{
string[] fileNames = GetFileNames(directoryPath);
foreach (string t in fileNames)
{
DeleteFile(t);
}
string[] directoryNames = GetDirectories(directoryPath);
foreach (string t in directoryNames)
{
DeleteDirectory(t);
}
}
}
#endregion
#region 清空文件内容
public static void ClearFile(string filePath)
{
File.Delete(filePath);
CreateFile(filePath);
}
#endregion
#region 删除指定文件
public static void DeleteFile(string filePath)
{
if (IsExistFile(filePath))
{
File.Delete(filePath);
}
}
#endregion
#region 删除指定目录
public static void DeleteDirectory(string directoryPath)
{
if (IsExistDirectory(directoryPath))
{
Directory.Delete(directoryPath, true);
}
}
#endregion
#region 记录错误日志到文件方法
public static void ErrorLog(string exMessage, string exMethod, int userID)
{
try
{
string errVir = "/Log/Error/" + DateTime.Now.ToShortDateString() + ".txt";
string errPath = System.Web.HttpContext.Current.Server.MapPath(errVir);
File.AppendAllText(errPath,
"{userID:" + userID + ",exMedthod:" + exMethod + ",exMessage:" + exMessage + "}");
}
catch
{
}
}
#endregion
#region 输出调试日志
public static void OutDebugLog(object factValue, object expectValue = null)
{
string errPath = System.Web.HttpContext.Current.Server.MapPath(string.Format("/Log/Debug/{0}.html", DateTime.Now.ToShortDateString()));
if (!Equals(expectValue, null))
File.AppendAllLines(errPath,
new[]{string.Format(
"【{0}】[{3}] 实际值:{1} 预期值: {2} ",
DateTime.Now.ToShortTimeString()
, factValue, expectValue, Equals(expectValue, factValue)
? "成功"
: "失败")});
else
File.AppendAllLines(errPath, new[]{
string.Format(
"【{0}】[{3}] 实际值:{1} 预期值: {2} ",
DateTime.Now.ToShortTimeString()
, factValue, "空", "成功")});
}
#endregion
}
}

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