如下代码段是关于C#封装的常用文件操作类的代码，希望对小伙伴们有些用处。
using System;
using System.Text;
using System.Web;
using System.IO;
namespace DotNet.Utilities
{
public class FileOperate
{
#region 写文件
protected void Write_Txt(string FileName, string Content)
{
Encoding code = Encoding.GetEncoding("gb2312");
string str = Content;
StreamWriter sw = null;
{
try
{
sw = new StreamWriter(htmlfilename, false, code);
sw.Write(str);
sw.Flush();
}
catch { }
}
sw.Close();
sw.Dispose();
}
#endregion
#region 读文件
protected string Read_Txt(string filename)
{
Encoding code = Encoding.GetEncoding("gb2312");
string temp = HttpContext.Current.Server.MapPath("Precious\" + filename + ".txt");
string str = "";
if (File.Exists(temp))
{
StreamReader sr = null;
try
{
sr = new StreamReader(temp, code);
}
catch { }
sr.Close();
sr.Dispose();
}
else
{
str = "";
}
return str;
}
#endregion
#region 取得文件后缀名
public static string GetPostfixStr(string filename)
{
int start = filename.LastIndexOf(".");
int length = filename.Length;
string postfix = filename.Substring(start, length - start);
return postfix;
}
#endregion
#region 写文件
public static void WriteFile(string Path, string Strings)
{
if (!System.IO.File.Exists(Path))
{
System.IO.FileStream f = System.IO.File.Create(Path);
f.Close();
f.Dispose();
}
System.IO.StreamWriter f2 = new System.IO.StreamWriter(Path, true, System.Text.Encoding.UTF8);
f2.WriteLine(Strings);
f2.Close();
f2.Dispose();
}
#endregion
#region 读文件
public static string ReadFile(string Path)
{
string s = "";
if (!System.IO.File.Exists(Path))
s = "不存在相应的目录";
else
{
StreamReader f2 = new StreamReader(Path, System.Text.Encoding.GetEncoding("gb2312"));
s = f2.ReadToEnd();
f2.Close();
f2.Dispose();
}
return s;
}
#endregion
#region 追加文件
public static void FileAdd(string Path, string strings)
{
StreamWriter sw = File.AppendText(Path);
sw.Write(strings);
sw.Flush();
sw.Close();
sw.Dispose();
}
#endregion
#region 拷贝文件
public static void FileCoppy(string OrignFile, string NewFile)
{
File.Copy(OrignFile, NewFile, true);
}
#endregion
#region 删除文件
public static void FileDel(string Path)
{
File.Delete(Path);
}
#endregion
#region 移动文件
public static void FileMove(string OrignFile, string NewFile)
{
File.Move(OrignFile, NewFile);
}
#endregion
#region 在当前目录下创建目录
public static void FolderCreate(string OrignFolder, string NewFloder)
{
Directory.SetCurrentDirectory(OrignFolder);
Directory.CreateDirectory(NewFloder);
}
public static void FolderCreate(string Path)
{
if (!Directory.Exists(Path))
Directory.CreateDirectory(Path);
}
#endregion
#region 创建目录
public static void FileCreate(string Path)
{
if (!CreateFile.Exists)
{
FileStream FS = CreateFile.Create();
FS.Close();
}
}
#endregion
#region 递归删除文件夹目录及文件
public static void DeleteFolder(string dir)
{
{
foreach (string d in Directory.GetFileSystemEntries(dir))
{
if (File.Exists(d))
else
}
}
}
#endregion
#region 将指定文件夹下面的所有内容copy到目标文件夹下面 果目标文件夹为只读属性就会报错。
public static void CopyDir(string srcPath, string aimPath)
{
try
{
if (aimPath[aimPath.Length - 1] != Path.DirectorySeparatorChar)
aimPath += Path.DirectorySeparatorChar;
if (!Directory.Exists(aimPath))
Directory.CreateDirectory(aimPath);
string[] fileList = Directory.GetFileSystemEntries(srcPath);
foreach (string file in fileList)
{
if (Directory.Exists(file))
CopyDir(file, aimPath + Path.GetFileName(file));
else
File.Copy(file, aimPath + Path.GetFileName(file), true);
}
}
catch (Exception ee)
{
throw new Exception(ee.ToString());
}
}
#endregion
#region 获取指定文件夹下所有子目录及文件(树形)
public static string GetFoldAll(string Path)
{
string str = "";
DirectoryInfo thisOne = new DirectoryInfo(Path);
str = ListTreeShow(thisOne, 0, str);
return str;
}
{
foreach (DirectoryInfo dirinfo in subDirectories)
{
if (nLevel == 0)
{
Rn += "├";
}
else
{
string _s = "";
for (int i = 1; i <= nLevel; i++)
{
_s += "│ ";
}
Rn += _s + "├";
}
Rn += "" + dirinfo.Name.ToString() + "
";
foreach (FileInfo fInfo in fileInfo)
{
if (nLevel == 0)
{
Rn += "│ ├";
}
else
{
string _f = "";
for (int i = 1; i <= nLevel; i++)
{
_f += "│ ";
}
Rn += _f + "│ ├";
}
Rn += fInfo.Name.ToString() + "
";
}
Rn = ListTreeShow(dirinfo, nLevel + 1, Rn);
}
return Rn;
}
public static string GetFoldAll(string Path, string DropName, string tplPath)
{
string strDrop = "
string str = "";
DirectoryInfo thisOne = new DirectoryInfo(Path);
str = ListTreeShow(thisOne, 0, str, tplPath);
return strDrop + str + "";
}
{
foreach (DirectoryInfo dirinfo in subDirectories)
{
Rn += "";
foreach (FileInfo fInfo in fileInfo)
{
Rn += "";
}
Rn = ListTreeShow(dirinfo, nLevel + 1, Rn, tplPath);
}
return Rn;
}
#endregion
#region 获取文件夹大小
public static long GetDirectoryLength(string dirPath)
{
if (!Directory.Exists(dirPath))
return 0;
long len = 0;
DirectoryInfo di = new DirectoryInfo(dirPath);
foreach (FileInfo fi in di.GetFiles())
{
len += fi.Length;
}
DirectoryInfo[] dis = di.GetDirectories();
if (dis.Length > 0)
{
for (int i = 0; i < dis.Length; i++)
{
len += GetDirectoryLength(dis[i].FullName);
}
}
return len;
}
#endregion
#region 获取指定文件详细属性
public static string GetFileAttibe(string filePath)
{
string str = "";
System.IO.FileInfo objFI = new System.IO.FileInfo(filePath);
str += "详细路径:" + objFI.FullName + "
文件名称:" + objFI.Name + "
文件长度:" + objFI.Length.ToString() + "字节
创建时间" + objFI.CreationTime.ToString() + "
最后访问时间:" + objFI.LastAccessTime.ToString() + "
修改时间:" + objFI.LastWriteTime.ToString() + "
所在目录:" + objFI.DirectoryName + "
扩展名:" + objFI.Extension;
return str;
}
#endregion
}
}