文件相关操作

using System;

using System.Collections;

using System.Text;

using System.Xml;

using System.IO;

using System.Windows.Forms;

namespace BrainSoft.Common

{

 /// <summary>

 ///
描   
述:文件相关操作

 /// 参数说明:

 ///
说    明:

 /// 创 建 人:thanktheworld

 ///
日    期:now

 /// 历史修改记录:

 ///
</summary>

 public class FileUtil

 {

  #region 返回文件二进制信息

  ///
<summary>

  /// 返回文件二进制信息

  ///
</summary>

  public static byte[]
GetFileBytesInfo(string filePath)

  {

   FileInfo
myFile = new FileInfo(filePath);

   FileStream
myFs = myFile.OpenRead();

   byte[] bytes
= new byte[myFs.Length];

   myFs.Read(bytes,
0, Convert.ToInt32(myFs.Length));

   myFs.Close();

   myFs = null;
myFile = null;

   return
bytes;

  }

  #endregion

  #region 保存二进制信息成文件

  ///
<summary>

  /// 保存二进制信息成文件

  ///
</summary>

  public static bool
SaveBytesToFile(byte[] _file, string filePath)

  {

   FileStream fs
= new FileStream(filePath, FileMode.CreateNew);

   BinaryWriter
bw = new BinaryWriter(fs);

   bw.Write(_file,
0, _file.Length);

   bw.Close();

   fs.Close();

   return
true;

  }

  #endregion

  #region 根据路径创建文件夹

  ///
<summary>

  /// 根据路径创建文件夹

  ///
</summary>

  /// <param
name="filePath">文件路径</param>

  public static bool
CreateFolder(string filePath)

  {

   string[]
folders=filePath.Split('\\');

   string
folderPath=folders[0];

   for (int
i=1;i<folders.Length-1;i++)

   {

    folderPath=folderPath+@""+folders[i];

    if
(Directory.Exists (folderPath)==false)

    {

     Directory.CreateDirectory(folderPath);

    }

   }

   return
true;

  }

  #endregion

  #region 获取临时文件

  ///
<summary>

  /// 获取临时文件

  ///
</summary>

  ///
<returns></returns>

  public static string
GetTempFileName()

  {

   return
GetTempFileName("");

  }

  ///
<summary>

  /// 获取临时文件

  ///
</summary>

  /// <param
name="Relative"></param>

  ///
<returns></returns>

  public static string
GetTempFileName(string Relative)

  {

   string
path  = Global.TempPath;

   if
(path.EndsWith(@"")==false)

   {

    path 
= path +@"\"+ Relative
;

   }

   else

   {

    path 
= path  + Relative ;

   }

   if
(!System.IO.Directory.Exists(path))

   {

    System.IO.Directory.CreateDirectory(path);

   }

   path +=
System.Guid.NewGuid().ToString();

   return
path;

  }

  #endregion

  #region 服务器路径转换为本地路径

  ///
<summary>

  /// 服务器路径转换为本地路径

  ///
</summary>

  /// <param
name="serverPath">服务器路径为
\表名\字锻名\主键.扩展名</param>

  ///
<returns></returns>

  public static string
ConvertServerToLocal(string serverPath)

  {

   if
(serverPath.IndexOf(":")>-1)

   {

    return
serverPath;

   }

   else

   {

    return
Global.TempPath + serverPath;

   }

  }

  ///
<summary>

  /// 服务器路径转换为本地路径

  ///
</summary>

  /// <param
name="serverPath">服务器路径为
\表名\字锻名\主键.扩展名</param>

  ///
<returns></returns>

  public static string
ConvertServerToLocalTemp(string serverPath)

  {

   string[]
folders=serverPath.Split('\\');

   string
folderPath=folders[0];

   for (int
i=1;i<folders.Length-1;i++)

   {

    folderPath=folderPath+@""+folders[i];

   }

   return
Global.TempPath + folderPath + @""+
System.Guid.NewGuid().ToString() + "." +
GetExtName(serverPath);

  }

  #endregion

  #region 本地路径转换为服务器路径

  ///
<summary>

  /// 文件路径转换

  ///
</summary>

  /// <param
name="PK">主键</param>

  /// <param
name="serverPath">服务器路径</param>

  /// <param
name="filePath">本地路径</param>

  ///
<returns>\表名\字锻名\主键.扩展名</returns>

  public static string
ConvertLocalToServer(string PK,string serverPath,string
filePath)

  {

   return
serverPath + PK + "." + GetExtName(filePath);

  }

  #endregion

  #region 获取文件扩展名

  ///
<summary>

  /// 获取文件扩展名

  ///
</summary>

  /// <param
name="filePath">文件路径</param>

  ///
<returns></returns>

  public static string
GetExtName(string filePath)

  {

   string[] arr
= filePath.Split('.');

   return
arr[arr.Length - 1];

  } 

  #endregion

 }

}