使用 C++ CLI 遍历所有系统文件和文件夹

Question

我发现 C# 代码可以循环遍历我们指定的任何目录，我尝试将其转换为 C++/CLI 并使其循环遍历所有系统文件和文件夹。问题是代码让您确定需要扫描的深度级别！我需要的是让它循环所有文件和文件夹，无论深度如何......这就是我所做的......有一些例外！

#include "stdafx.h"

using namespace System;
using namespace System::IO;

ref class Scan {
public:
    static int MaxPath=260000000;

    static void ScanMyDir( String^ SourceDir,int RecursiveLevel) {
        if(RecursiveLevel<=MaxPath) {
            array <String^> ^fileEntries = Directory::GetFiles(SourceDir);
            for each (String^ fileName in fileEntries) {
                Console::WriteLine(fileName);
            }
        }
        array<String^> ^SubDirEntries = Directory::GetDirectories(SourceDir);
        for each (String^ subdir in SubDirEntries)
            if ((File::GetAttributes(subdir) & FileAttributes::ReparsePoint)!= FileAttributes::ReparsePoint)
                ScanMyDir(subdir,RecursiveLevel+1);
    }
};

int main(array<System::String ^> ^args) {
    Scan::ScanMyDir("c://",1);
    Console::Read();
    return 0;
}

---

经过一些修改（还是有一些错误）：

using namespace System;
using namespace System::IO;

static void ScanMyDir( String^ SourceDir) {
    array <String^> ^fileEntries = Directory::GetFiles(SourceDir);
    for each  (String^ fileName in fileEntries) {
        Console::WriteLine(fileName);
    }
    array<String^> ^SubDirEntries = Directory::GetDirectories(SourceDir);
    for each (String^ subdir in SubDirEntries)
        if ((File::GetAttributes(subdir) & FileAttributes::ReparsePoint)!= FileAttributes::ReparsePoint)
            ScanMyDir(subdir);
}

int main(array<System::String ^> ^args) {
    try {
        ScanMyDir("C://Windows"); 
    }
    catch {
        Console::WriteLine("Some Denied files or Folders");
    }
    return 0;
}

这些是错误：

错误 1 ​​错误 C2059：语法错误：'{' c:\Users\Ahmed\documents\visual studio 2010\Projects\eeee\eeee\eeee.cpp 31

错误 6 错误 C2059：语法错误：'}' c:\Users\Ahmed\documents\visual studio 2010\Projects\eeee\eeee\eeee.cpp 37

错误 8 错误 C2059：语法错误：'}' c:\Users\Ahmed\documents\visual studio 2010\Projects\eeee\eeee\eeee.cpp 37

错误 5 错误 C2059：语法错误：'return' c:\Users\Ahmed\documents\visual studio 2010\Projects\eeee\eeee\eeee.cpp 36

错误 4 错误 C2061：语法错误：标识符 'WriteLine' c:\Users\Ahmed\documents\visual studio 2010\Projects\eeee\eeee\eeee.cpp 32

错误 7 错误 C2143：语法错误：缺少 ';'在'}'之前 c:\Users\Ahmed\documents\visual studio 2010\Projects\eeee\eeee\eeee.cpp 37

错误 2 错误 C2309：catch 处理程序需要带括号的异常声明 c:\Users\Ahmed\documents\visual studio 2010\Projects\eeee\eeee\eeee.cpp 31

错误 3 错误 C2319：'catch' 必须后跟复合语句。缺少'{' c:\Users\Ahmed\documents\visual studio 2010\Projects\eeee\eeee\eeee.cpp 32

Answer 1

如果您删除该代码的递归级别部分，您应该得到您想要的。您提到了 3 个例外，但我没有看到任何说明它们是什么的。

static void ScanMyDir( String^ SourceDir)
{
array <String^> ^fileEntries = Directory::GetFiles(SourceDir);
for each  (String^ fileName in fileEntries)
{
Console::WriteLine(fileName);
}
array<String^> ^SubDirEntries = Directory::GetDirectories(SourceDir);
for each (String^ subdir in SubDirEntries)
if ((File::GetAttributes(subdir) & FileAttributes::ReparsePoint)!= FileAttributes::ReparsePoint)
            ScanMyDir(subdir);
}
};

Answer 2

出于对所有神圣事物的热爱，请不要使用递归。 我回答了this question for C# here。到 C++/CLI 的转换是直截了当的。如果您不想这样做，请将其编译为自己的程序集（并可选择将其合并到您的程序集中）。