C#-获取文件列表,排除隐藏的文件

DirectoryInfo directory = new DirectoryInfo(@"C:\temp");
FileInfo[] files = directory.GetFiles();

var filtered = files.Where(f => !f.Attributes.HasFlag(FileAttributes.Hidden));

foreach (var f in filtered)
{
    Debug.WriteLine(f);
}

// check whether a file is hidden
bool isHidden = ((File.GetAttributes(filePath) & FileAttributes.Hidden) == FileAttributes.Hidden);

使用.NET 4.0和Directory.EnumerateDirectory,可以使用以下构造:

var hiddenFilesQuery = from file in Directory.EnumerateDirectories(@"c:\temp")
                       let info = new FileInfo(file)
                       where (info.Attributes & FileAttributes.Hidden) == 0
                       select file;

(let在这里是为了使查询更具可读性)。

如果使用:

var filtered = files.Select(f => f) .Where(f => (f.Attributes & FileAttributes.Hidden) == 0);

这只会发现没有隐藏文件,因此您可以使用:

var filtered = files.Select(f => f) .Where(f => (f.Attributes & FileAttributes.Hidden) == FileAttributes.Hidden);

这只是为了读取隐藏的文件

单行代码:

FileInfo[] tmpFiles = tempDir.GetFiles().Where(file => 
            (file.Attributes & FileAttributes.Hidden) == 0).ToArray();

如果您只使用SearchOption.TopDirectoryOnly,那么它相对简单,但是如果您想使用SearchOption.AllDirectories递归地列出所有文件,它会变得更复杂。如果您可以获取文件,然后过滤出只读,但不幸的是,它将无法与目录标记为隐藏。文件夹下的文件也会列出,但它们不像目录那样隐藏。

您也可以使用GetDirectories,但同样-您不能使用SearchOption.AllDirectories递归地列出所有内容,因为它还列出了位于hidden folder下的文件夹,但这些文件夹没有启用hidden属性。

    SearchOption sopt = SearchOption.AllDirectories;
    List<String> listFiles = new List<string>();
    List<DirectoryInfo> dirs2scan = new List<DirectoryInfo>();

    dirs2scan.Add(new DirectoryInfo(fromPath) );

    for( ; dirs2scan.Count != 0; )
    {
        int scanIndex = dirs2scan.Count - 1;        // Try to preserve somehow alphabetic order which GetFiles returns 
                                                    // by scanning though last directory.
        FileInfo[] filesInfo = dirs2scan[scanIndex].GetFiles(pattern, SearchOption.TopDirectoryOnly);

        foreach (FileInfo fi in filesInfo)
        {
            if (bNoHidden && fi.Attributes.HasFlag(FileAttributes.Hidden))
                continue;

            listFiles.Add(fi.FullName);
        }

        if( sopt != SearchOption.AllDirectories )
            break;

        foreach (DirectoryInfo dir in dirs2scan[scanIndex].GetDirectories("*", SearchOption.TopDirectoryOnly))
        {
            if (bNoHidden && dir.Attributes.HasFlag(FileAttributes.Hidden))
                continue;

            dirs2scan.Add(dir);
        }
        dirs2scan.RemoveAt(scanIndex);
    }

如果需要,sopt可以在函数中用作参数;如果不需要,sopt可以删除。

private void SearchDirectory(DirectoryInfo startDirectory, 
                             string pattern, 
                             Action<FileInfo> act)
{
    foreach (var file in startDirectory.GetFiles(pattern))
        act(file);

    foreach (var directory in startDirectory.GetDirectories())
        SearchDirectory(directory, pattern, act);
}

private List<FileInfo> SearchDirectory(DirectoryInfo startDirectory, 
                                       string pattern, 
                                       Func<FileInfo, bool> isWanted)
{
    var lst = new List<FileInfo>();
    SearchDirectory(startDirectory, 
                    pattern, 
                    (fi) => { if (isWanted(fi)) lst.Add(fi); });
    return lst;
}

然后,可以使用列出的其他解决方案编写一个IsHidden函数,该函数接受单个FileInfo,如果是,则返回true:

private bool IsHiddenDirectory(DirectoryInfo d) {
    if (d == null) return false;
    if (d.Attributes.HasFlag(FileAttributes.Hidden))) return true;
    if (d.Parent == null) return false;
    return IsHiddenDirectory(d.Parent);
}

private bool IsHidden(FileInfo fi) {
    if ((fi.Attributes & FileAttributes.Hidden) != 0) return true;
    // If you're worried about parent directories hidden:
    return IsHiddenDirectory(fi.Directory);
    // otherwise:
    return false;
}

var files = SearchDirectory(new DirectoryInfo("C:\temp\"),
                            "*.xml",
                            (fi) => { return !IsHidden(fi); );

static bool IsHidden(string p)
{
 return p.Contains("Hidden");
}

DirectoryInfo directory = new DirectoryInfo(@"C:\temp");
FileInfo[] files = directory.GetFiles();

var filtered = files.Where(f => !IsHidden(File.GetAttributes(f).ToString()));

foreach (var f in filtered)
{
 Debug.WriteLine(f);
}

步骤:

1. 当字符串包含“Hidden”时,创建返回true的bool---- static bool IsHidden(string p){return p.Contains("Hidden");}

2. 获取目录信息---- DirectoryInfo directory = new DirectoryInfo(@"C:\temp");

3. FileInfo[] files = directory.GetFiles();

4. var filtered = files.Where(f=>!IsHidden(File.GetAttributes(f).ToString()));