我正在使用此解决方案删除特定路径中的所有空文件夹和子目录:
static void Main(string[] args)
{
processDirectory(@"c:\temp");
}
private static void processDirectory(string startLocation)
{
foreach (var directory in Directory.GetDirectories(startLocation))
{
processDirectory(directory);
if (Directory.GetFiles(directory).Length == 0 &&
Directory.GetDirectories(directory).Length == 0)
{
Directory.Delete(directory, false);
}
}
}
完美无缺。但我想删除所有空文件夹以及非空文件夹,但也不包含.dvr
扩展名的文件。
例如,我的文件夹包含以下文件:
a.log
b.log
c.dvr
d.dat
因此,无法删除此文件夹,因为它包含带有dvr扩展名的文件。
我该如何过滤它? (我正在使用GTK#但我相信C#代码可以工作,因为这个解决方案是C#代码)
答案 0 :(得分:5)
不幸的是,错误处理在IO操作中是非常例外的。如果目录不为空,则Directory.Delete会抛出IOException。因此,您必须手动删除文件:
private static bool processDirectory(string startLocation)
{
bool result = true;
foreach (var directory in Directory.GetDirectories(startLocation))
{
bool directoryResult = processDirectory(directory);
result &= directoryResult;
if (Directory.GetFiles(directory, "*.dvr").Any())
{
result = false;
continue;
}
foreach(var file in Directory.GetFiles(directory))
{
try
{
File.Delete(file);
}
catch(IOException)
{
// error handling
result = directoryResult = false;
}
}
if (!directoryResult) continue;
try
{
Directory.Delete(directory, false);
}
catch(IOException)
{
// error handling
result = false;
}
}
return result;
}
答案 1 :(得分:2)
我会使用Directory.EnumerateFiles查看目录是否包含您要查找的文件。将您的代码更改为:
static void Main(string[] args)
{
processDirectory(@"c:\temp");
}
private static void processDirectory(string startLocation)
{
foreach (var directory in Directory.GetDirectories(startLocation))
{
processDirectory(directory);
if (Directory.GetDirectories(directory).Length == 0 ||
Directory.EnumerateFiles(directory, "*.dvr").Length == 0
)
{
Directory.Delete(directory, false);
}
}
}
答案 2 :(得分:0)
Avitus answer是正确的,但由于您需要它在.NET 2.0中工作,因此无法使用EnumerateFiles
方法,但GetFiles
可以很好地完成工作。但需要更多代码。
示例:强>
static void Main(string[] args)
{
processDirectory(@"c:\temp");
}
private static void processDirectory(string startLocation)
{
foreach (var directory in Directory.GetDirectories(startLocation))
{
processDirectory(directory);
if (Directory.GetDirectories(directory).Length == 0))
{
bool delete = false;
var files = Directory.GetFiles(directory);
// This will delete the directory if it contains a file with the Extension
// of .dvr, regardless if there are other files in there. Might be something you want to change.
for (int i = 0; i < files.Length && !delete; i++)
{
delete = files[i].Extension.Equals(".dvr", StringComparison.OrdinalIgnoreCase);
}
if (delete)
{
// Recursive must be set to true in order to
// delete files and sub-directories in the folder.
// This folder will not have any sub-directories
// so it's only used to delete the files.
Directory.Delete(directory, /*recursive*/ true);
}
}
}
}
如果你愿意的话,你可以根据较少代码的精神在Directory.Delete
循环中移动for
方法调用,然后打破循环。