ToArray and Type Casting

This is a discussion on ToArray and Type Casting within the C# Programming forums, part of the General Programming Boards category; I have an ArrayList and a string which I want to find chars of ArrayList in it. My ArrayList is ...

  1. #1
    System Novice siavoshkc's Avatar
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    ToArray and Type Casting

    I have an ArrayList and a string which I want to find chars of ArrayList in it. My ArrayList is named punctuations.
    Code:
          tatic System::Collections::ArrayList ^punctuations =  gcnew System::Collections::ArrayList;
          punctuations->Add('/');
          punctuations->Add('\n');
          punctuations->Add(' ');
          punctuations->Add('\t');
          punctuations->Add('\"');
          punctuations->Add('\'');
          
          array<wchar_t>^myArr =safe_cast<array<wchar_t>^>(punctuations->ToArray(wchar_t::typeid));
    
          int firstToken = text->IndexOfAny(myArr, startpos);
    It fails to cast and says at least one source element can't be cast to dest array type.
    But don't know why...
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  2. #2
    the hat of redundancy hat nvoigt's Avatar
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    You have objects of type "char" and you try to get an array of type wchar_t. Maybe it's easier to insert wchar_t characters from the start. You could also use a generic list so you are typesafe. Or you could use an array without using an arraylist in between.

    Why do you use C++/CLI if I may ask? If you want .NET, C# is better suited, interfacing between legacy C++ code and a C# application is the only valid excuse for using C++/CLI. Or Masochism. C++/CLI combines the readability of C++ and the speed of .NET ...
    hth
    -nv

    She was so Blonde, she spent 20 minutes looking at the orange juice can because it said "Concentrate."

    When in doubt, read the FAQ.
    Then ask a smart question.

  3. #3
    System Novice siavoshkc's Avatar
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    Thread in MSDN...
    Quote Originally Posted by nvoigt
    Why do you use C++/CLI if I may ask? If you want .NET, C# is better suited, interfacing between legacy C++ code and a C# application is the only valid excuse for using C++/CLI. Or Masochism. C++/CLI combines the readability of C++ and the speed of .NET ...
    lol, Masochism it seems to be. The reason I am using it is that once I decided to fully learn C++/CLI. As a result I started a project to practice it. Now I am back to that project.

    Thanks
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  4. #4
    the hat of redundancy hat nvoigt's Avatar
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    Quote Originally Posted by siavoshkc View Post
    The reason I am using it is that once I decided to fully learn C++/CLI.
    That sounds like hitting yourself with a hammer just out of curiosity and to learn how it feels. If you don't know the .NET Framework yet, try to learn C#, it's way easier and C++/CLI is just 3 additional keywords once you know .NET and C++.
    hth
    -nv

    She was so Blonde, she spent 20 minutes looking at the orange juice can because it said "Concentrate."

    When in doubt, read the FAQ.
    Then ask a smart question.

  5. #5
    System Novice siavoshkc's Avatar
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    I practiced C#, VB.net and C++/CLI and I have an acceptable knowledge about .NET now (at least from my own view point). But I decided to focus on C++.

    I am also thinking about F# right now. Do you know it?
    Learn C++ (C++ Books, C Books, FAQ, Forum Search)
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