Asp.net对文件夹和文件的操作类

using System; 
using System.IO; 
using System.Web; 

namespace SEC 
{ 
/**//// 
/// 对文件和文件夹的操作类 
/// 
public class FileControl 
{ 
public FileControl() 
{ 

} 
/**//// 
/// 在根目录下创建文件夹 
/// 
/// 要创建的文件路径 
public void CreateFolder(string FolderPathName) 
{ 
if(FolderPathName.Trim().Length> 0) 
{ 
try 
{ 
string CreatePath = System.Web.HttpContext.Current.Server.MapPath 

("../../../Images/"+FolderPathName).ToString(); 
if(!Directory.Exists(CreatePath)) 
{ 
Directory.CreateDirectory(CreatePath); 
} 
} 
catch 
{ 
throw; 
} 
} 
} 

/**//// 
/// 删除一个文件夹下面的字文件夹和文件 
/// 
/// 
public void DeleteChildFolder(string FolderPathName) 
{ 
if(FolderPathName.Trim().Length> 0) 
{ 
try 
{ 
string CreatePath = System.Web.HttpContext.Current.Server.MapPath 

(FolderPathName).ToString(); 
if(Directory.Exists(CreatePath)) 
{ 
Directory.Delete(CreatePath,true); 
} 
} 
catch 
{ 
throw; 
} 
} 
} 

/**//// 
/// 删除一个文件 
/// 
/// 
public void DeleteFile(string FilePathName) 
{ 
try 
{ 
FileInfo DeleFile = new FileInfo(System.Web.HttpContext.Current.Server.MapPath 

(FilePathName).ToString()); 
DeleFile.Delete(); 
} 
catch 
{ 
} 
} 
public void CreateFile(string FilePathName) 
{ 
try 
{ 
//创建文件夹 
string[] strPath= FilePathName.Split('/'); 
CreateFolder(FilePathName.Replace("/" + strPath[strPath.Length-1].ToString(),"")); //创建文件 

夹 
FileInfo CreateFile =new FileInfo(System.Web.HttpContext.Current.Server.MapPath 

(FilePathName).ToString()); //创建文件 
if(!CreateFile.Exists) 
{ 
FileStream FS=CreateFile.Create(); 
FS.Close(); 
} 
} 
catch 
{ 
} 
} 
/**//// 
/// 删除整个文件夹及其字文件夹和文件 
/// 
/// 
public void DeleParentFolder(string FolderPathName) 
{ 
try 
{ 
DirectoryInfo DelFolder = new DirectoryInfo(System.Web.HttpContext.Current.Server.MapPath 

(FolderPathName).ToString()); 
if(DelFolder.Exists) 
{ 
DelFolder.Delete(); 
} 
} 
catch 
{ 
} 
} 
/**//// 
/// 在文件里追加内容 
/// 
/// 
public void ReWriteReadinnerText(string FilePathName,string WriteWord) 
{ 
try 
{ 
//建立文件夹和文件 
//CreateFolder(FilePathName); 
CreateFile(FilePathName); 
//得到原来文件的内容 
FileStream FileRead=new FileStream(System.Web.HttpContext.Current.Server.MapPath 

(FilePathName).ToString(),FileMode.Open,FileAccess.ReadWrite); 
StreamReader FileReadWord=new StreamReader(FileRead,System.Text.Encoding.Default); 
string OldString = FileReadWord.ReadToEnd().ToString(); 
OldString = OldString + WriteWord; 
//把新的内容重新写入 
StreamWriter FileWrite=new StreamWriter(FileRead,System.Text.Encoding.Default); 
FileWrite.Write(WriteWord); 
//关闭 
FileWrite.Close(); 
FileReadWord.Close(); 
FileRead.Close(); 
} 
catch 
{ 
// throw; 
} 
} 

/**//// 
/// 在文件里追加内容 
/// 
/// 
public string ReaderFileData(string FilePathName) 
{ 
try 
{ 

FileStream FileRead=new FileStream(System.Web.HttpContext.Current.Server.MapPath 

(FilePathName).ToString(),FileMode.Open,FileAccess.Read); 
StreamReader FileReadWord=new StreamReader(FileRead,System.Text.Encoding.Default); 
string TxtString = FileReadWord.ReadToEnd().ToString(); 
//关闭 
FileReadWord.Close(); 
FileRead.Close(); 
return TxtString; 
} 
catch 
{ 
throw; 
} 
} 
/**//// 
/// 读取文件夹的文件 
/// 
/// 
/// 
public DirectoryInfo checkValidSessionPath(string FilePathName) 
{ 
try 
{ 
DirectoryInfo MainDir = new DirectoryInfo(System.Web.HttpContext.Current.Server.MapPath 

(FilePathName)); 
return MainDir; 

} 
catch 
{ 
throw; 
} 
} 
} 
}