本文实例讲述了C#实现彻底删除文件的方法。分享给大家供大家参考。具体实现方法如下：
经常用360的文件粉碎，删除隐私文件貌似还不错的。不过C#也可以实现彻底删除文件。试了下用360文件恢复恢复不了源文件了。
主要代码如下：
{
public event EventHandler FinishDeleteFileEvent = null;
public event EventHandler FinishDeleteFolderEvent = null;
public event EventHandler DeleteErrorEvent = null;
public string ErrorString = string.Empty;
public void DoAbsoluteDeleteFile(object filePath)
{
try
{
string filename = filePath.ToString();
if (string.IsNullOrEmpty(filename))
{
return;
}
if (File.Exists(filename))
{
File.SetAttributes(filename, FileAttributes.Normal);
double sectors = Math.Ceiling(new FileInfo(filename).Length / 512.0);
byte[] dummyBuffer = new byte[512];
RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
FileStream inputStream = new FileStream(filename, FileMode.Open);
inputStream.Position = 0;
for (int sectorsWritten = 0; sectorsWritten < sectors; sectorsWritten++)
{
rng.GetBytes(dummyBuffer);
inputStream.Write(dummyBuffer, 0, dummyBuffer.Length);
sectorsWritten++;
}
inputStream.SetLength(0);
inputStream.Close();
DateTime dt = new DateTime(2049, 1, 1, 0, 0, 0);
File.SetCreationTime(filename, dt);
File.SetLastAccessTime(filename, dt);
File.SetLastWriteTime(filename, dt);
File.Delete(filename);
WipeDone();
}
}
catch (Exception e)
{
WipeError(e);
}
}
public void DoDeleteFolder(object folder)
{
string folderPath = folder.ToString();
if (string.IsNullOrEmpty(folderPath))
{
return;
}
DirectoryInfo direct = new DirectoryInfo(folderPath);
FileSystemInfo[] filesystem = direct.GetFileSystemInfos();
if (filesystem == null || filesystem.Length == 0)
{
direct.Delete();
}
else
{
foreach (FileSystemInfo fileItem in filesystem)
{
if (fileItem is FileInfo)
{
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