Question

是的，我创建了一个应用程序，它将列出文件夹和子文件夹中的所有文件，但是当我尝试在c：windows中列出文件列表时，我收到了此错误“UnauthorizedAccessException”。我正在使用foreach循环，以解决错误，我已经捕获错误但它将结束应用程序。如何跳过此错误并转到另一个文件。这是我所做的代码。

try
        {
            //linecount2 = Directory.GetFiles(path2).Count();
            //textBox1.Text = linecount2.ToString();

            foreach (string file in Directory.GetFiles(path2, "*.*", SearchOption.AllDirectories))
            {
                currentpath = file;
                Directory.GetAccessControl(file);
                DateTime creationdate = File.GetCreationTime(file);
                DateTime modidate = File.GetLastWriteTime(file);
                textBox1.Text = "[" + file + "]" + "[" + creationdate + "]" + "[" + creationdate + "]";
                ReportLog(savefile);
            }
        }
        catch (DirectoryNotFoundException e)
        {
            textBox1.Text = "[" + readpath + "]" + "[No path available]" + "[]";
            ReportLog(savefile);
        }
        catch (UnauthorizedAccessException e)
        {
            textBox1.Text = "[" + currentpath + "]" + "[Unauthorized Access]" + "[]";
            ReportLog(savefile);
        }

如果可能的话我想要包含隐藏的文件。这真的有帮助。

Answer 1

您的代码存在的问题是任何错误都会导致代码跳出循环。相反，将错误捕获到for循环中：

foreach (string file in Directory.GetFiles(path2, "*.*", SearchOption.AllDirectories))
{
    try
    {
        currentpath = file;
        Directory.GetAccessControl(file);
        DateTime creationdate = File.GetCreationTime(file);
        DateTime modidate = File.GetLastWriteTime(file);
        textBox1.Text = "[" + file + "]" + "[" + creationdate + "]" + "[" + creationdate + "]";
        ReportLog(savefile);
    }
    catch (DirectoryNotFoundException e)
    {
        textBox1.Text = "[" + readpath + "]" + "[No path available]" + "[]";
        ReportLog(savefile);
    }
    catch (UnauthorizedAccessException e)
    {
        textBox1.Text = "[" + currentpath + "]" + "[Unauthorized Access]" + "[]";
        ReportLog(savefile);
    }
}

但是您的代码还存在一些其他问题，并且循环中的代码似乎没有做任何有用的事情。

Answer 2

你必须使用像这样的递归函数：

public static List<string> GetRecords(string path)
{
    List<string> records;
    try
    {
        records = Directory.GetFiles(path)
            .Select(
                o => string.Format("[{0}][{1}][{2}]", o, File.GetCreationTime(o), File.GetLastWriteTime(o)))
            .ToList();
        foreach (var directory in Directory.GetDirectories(path))
        {
            records.AddRange(GetRecords(directory));
        }
        return records;
    }
    catch (UnauthorizedAccessException)
    {
        return new List<string> {string.Format("[{0}][Unauthorized Access][]", path)};
    }
    catch (DirectoryNotFoundException)
    {
        return new List<string> { string.Format("[{0}][No path available][]", path) };
    }
}

如何使用框架3.5排除UnauthorizedAccessException

2 个答案: