.net 文件操作实用类
.net 文件操作实用类 有了这个辅助类 大家就只要直接调用这个类里面的方法不要再写那么多的代码了using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Web;
namespace Svnhost.Common
{
/// <summary>
/// 文件实用类
/// </summary>
public sealed class FileUtil
{
private FileUtil()
{
}
/// <summary>
/// 创建目录
/// </summary>
/// <param name="FileOrPath">文件或目录</param>
public static void CreateDirectory(string FileOrPath)
{
if (FileOrPath != null)
{
string path;
if (FileOrPath.Contains("."))
path = Path.GetDirectoryName(FileOrPath);
else
path = FileOrPath;
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
}
}
/// <summary>
/// 读取文件
/// </summary>
/// <param name="filename"></param>
/// <param name="encoding"></param>
/// <param name="isCache"></param>
/// <returns></returns>
public static string ReadFile(string filename, Encoding encoding, bool isCache)
{
string body;
if (isCache)
{
body = (string)HttpContext.Current.Cache;
if (body == null)
{
body = ReadFile(filename, encoding, false);
HttpContext.Current.Cache.Add(filename, body, new System.Web.Caching.CacheDependency(filename), DateTime.MaxValue, TimeSpan.Zero, System.Web.Caching.CacheItemPriority.High, null);
}
}
else
{
using (StreamReader sr = new StreamReader(filename, encoding))
{
body = sr.ReadToEnd();
}
}
return body;
}
/// <summary>
/// 备份文件
/// </summary>
/// <param name="sourceFileName">源文件名</param>
/// <param name="destFileName">目标文件名</param>
/// <param name="overwrite">当目标文件存在时是否覆盖</param>
/// <returns>操作是否成功</returns>
public static bool BackupFile(string sourceFileName, string destFileName, bool overwrite)
{
if (!System.IO.File.Exists(sourceFileName))
{
throw new FileNotFoundException(sourceFileName + "文件不存在！");
}
if (!overwrite && System.IO.File.Exists(destFileName))
{
return false;
}
try
{
System.IO.File.Copy(sourceFileName, destFileName, true);
return true;
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
/// 备份文件,当目标文件存在时覆盖
/// </summary>
/// <param name="sourceFileName">源文件名</param>
/// <param name="destFileName">目标文件名</param>
/// <returns>操作是否成功</returns>
public static bool BackupFile(string sourceFileName, string destFileName)
{
return BackupFile(sourceFileName, destFileName, true);
}
/// <summary>
/// 恢复文件
/// </summary>
/// <param name="backupFileName">备份文件名</param>
/// <param name="targetFileName">要恢复的文件名</param>
/// <param name="backupTargetFileName">要恢复文件再次备份的名称,如果为null,则不再备份恢复文件</param>
/// <returns>操作是否成功</returns>
public static bool RestoreFile(string backupFileName, string targetFileName, string backupTargetFileName)
{
try
{
if (!System.IO.File.Exists(backupFileName))
{
throw new FileNotFoundException(backupFileName + "文件不存在！");
}
if (backupTargetFileName != null)
{
if (!System.IO.File.Exists(targetFileName))
{
throw new FileNotFoundException(targetFileName + "文件不存在！无法备份此文件！");
}
else
{
System.IO.File.Copy(targetFileName, backupTargetFileName, true);
}
}
System.IO.File.Delete(targetFileName);
System.IO.File.Copy(backupFileName, targetFileName);
}
catch (Exception e)
{
throw e;
}
return true;
}
public static bool RestoreFile(string backupFileName, string targetFileName)
{
return RestoreFile(backupFileName, targetFileName, null);
}
/// <summary>
/// 获取文件夹占用空间大小
/// </summary>
/// <param name="Path"></param>
/// <returns></returns>
public static long GetDirecotrySize(string Path)
{
long result = 0;
if (!Directory.Exists(Path))
return result;
DirectoryInfo info = new DirectoryInfo(Path);
foreach (FileInfo fiInfo in info.GetFiles())
{
result += fiInfo.Length;
}
foreach (DirectoryInfo dirInfo in info.GetDirectories())
{
result += GetDirecotrySize(dirInfo.FullName);
}
return result;
}
}
}
沙发呢，多谢楼主
好东东 谢谢分享了~~~辛苦了 幸苦了，正好需要
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