[英]Proper way to delete files & directories inside but leave directory path alone?
在下面的腳本中,我想保留“ Dominion”文件夾而不刪除它。 問題是此Directory.Delete
命令刪除“ Dominion”文件夾。
var directoryPath = "X:\Applications\Dealer\Data\Ftp\Incoming";
if (Directory.Exists(directoryPath + @"\" + "Dominion"))
{
Directory.Delete(directoryPath + @"\" + "Dominion", true);
}
Directory.CreateDirectory(directoryPath + @"\" + "Dominion");
您可以使用這種方法:
var root = new DirectoryInfo(@"X:\Applications\Dealer\Data\Ftp\Incoming");
var deleteableEntries = root.EnumerateFileSystemInfos()
.Where(entry => (entry.Attributes & FileAttributes.Directory) != FileAttributes.Directory || entry.Name != "Dominion");
foreach(var entryToDelete in deleteableEntries)
entryToDelete.Delete();
由於此操作會由於多種原因而失敗(訪問被拒絕或文件夾不為空),因此這是一種未經測試的方法,該方法應該有效或至少給出了一個主意:
var stack = new Stack<FileSystemInfo>(deleteableEntries); // "recursive", stack to delete deepest folders first
while (stack.Count > 0)
{
FileSystemInfo fsi = stack.Peek(); // don't remove yet, only if it was deleted
bool isDirectory = (fsi.Attributes & FileAttributes.Directory) == FileAttributes.Directory;
fsi.Attributes = FileAttributes.Normal; // can avoid possible access-denied exceptions if it's readonly
try
{
bool canBeDeleted = !isDirectory;
if (isDirectory)
{
var subEntries = new DirectoryInfo(fsi.FullName).EnumerateFileSystemInfos("*.*", SearchOption.AllDirectories);
canBeDeleted = !subEntries.Any();
foreach (FileSystemInfo subEntry in subEntries)
stack.Push(subEntry);
}
if (canBeDeleted)
{
fsi.Delete();
stack.Pop(); // remove it
}
} catch (Exception ex)
{
Console.Error.WriteLine(ex);
}
}
只需使用這個:
var directoryPath = @"X:\Applications\Dealer\Data\Ftp\Incoming";
System.IO.DirectoryInfo directoryToClean = new DirectoryInfo(directoryPath );
foreach (FileInfo file in directoryToClean.GetFiles())
{
file.Delete();
}
foreach (DirectoryInfo dir in directoryToClean.GetDirectories().Where(dir => dir.Name != "Dominion"))
{
dir.Delete(true);
}
您可以將其簡化為委托,但是獲取文件並遍歷它們非常簡單。
var directoryPath = "X:\Applications\Dealer\Data\Ftp\Incoming";
if (Directory.Exists(directoryPath + @"\" + "Dominion"))
{
var newPath = directoryPath + @"\" + "Dominion";
var files = Directory.GetAllFiles(newPath);
foreach (var file in files)
{
File.Delete(file);
}
}
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