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2011-04-18T02:35:56.020
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2011-04-18T02:57:47.787
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Finally I completed the short project.To get the list of files and sub directories, I made use of <code>.NET Framework namespace "System"</code>.It has got classes like "<code>FileInfo</code>" and "<code>DirectoryInfo</code>"(both belong to <code>System::IO</code>) which do the above required task.But here,all the string related stuff is of <code>System::String</code> , not of <code>std::string</code>.To convert <code>System::String</code> to <code>std::string</code>, I used the following code(I got this conversion's code from a forum and it worked fine without any error): <pre><code>string Str2str(String ^a) { array<Byte> ^chars = System::Text::Encoding::ASCII->GetBytes(a); pin_ptr<Byte> charsPointer = &(chars[0]); char *nativeCharsPointer = reinterpret_cast<char *>(static_cast<unsigned char *>(charsPointer)); string native(nativeCharsPointer, chars->Length); return native; } </code></pre> Here is a short code for getting list of sub directories from a drive(D: drive is going to be searched): <pre><code> #include<iostream> #using<mscorlib.dll> using namespace strd; using namespace System; using namespace System::IO; int main() {int count=50; string name[count];//to hold directories names string b; int s=0; DirectoryInfo^ di = gcnew DirectoryInfo("d:\\"); if(di->Exists) {array<DirectoryInfo^>^diArr = di->GetDirectories(); Collections::IEnumerator^ myEnum = diArr->GetEnumerator(); while ( myEnum->MoveNext() ) {DirectoryInfo^ dri = safe_cast<DirectoryInfo^>(myEnum->Current); String ^a=(dri->Name->ToString()); int n=b.size(); b=Str2str(a); `// code given in the starting` if (s<count) {name[s]=b; s++;} } </code></pre> This involves Managed C++ knowledge. Visit these: <a href="http://msdn.microsoft.com/en-us/library/68td296t.aspx" rel="nofollow">.NET Programming Guide</a> <a href="http://msdn.microsoft.com/en-us/library/ms379617%28VS.80%29.aspx" rel="nofollow">C++: The Most Powerful Language for .NET Framework Programming</a> I compiled this on Visual Studio 2008. I will be very grateful if you appriciate my effort.Further suggestions are most welcomed.
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1. POHow can i get the listing of files and directories of a path using C++?
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1. COSearch MSDN for information about DirectoryInfo and FileInfo.
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2. COThis is not very pretty code, but it is homework and you say it works. What I suggested is simpler though. Be aware that if you distribute a binary using .NET some platforms like windows XP may need the .NET runtime installed. This is around 100+MB from memory. Alot of overhead for just a couple of .NET features.
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