StreamWriter

This is a discussion on StreamWriter within the C# Programming forums, part of the General Programming Boards category; Hello everyone, For example, my class Foo wraps an object of StreamWriter, I must make Foo implements IDisposable and in ...

  1. #1
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    StreamWriter

    Hello everyone,


    For example, my class Foo wraps an object of StreamWriter, I must make Foo implements IDisposable and in the Dispose method of class Foo, invoke Dispose method of the StreamWriter object instance to release resource properly?

    Code:
    using System.IO;
    
    
    public class Foo : IDisposable
    {
        StreamWriter a;
    
        public Foo()
    	{
    
    	}
    
        public void Dispose
        {
            if (null != a)
            {
                a.Dispose();
            }
        }
    
    }

    thanks in advance,
    George

  2. #2
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    I have no idea what you're asking this time, but as far as i know, you don't need to do this as garbage collection is automatic.

    Code:
    using System.IO
    
    public class Foo
    {
      StreamWriter a;
    
      public Foo()
      {
      }
    }
    He who asks is a fool for five minutes, but he who does not ask remains a fool forever.

    The fool wonders, the wise man asks. - Benjamin Disraeli

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  3. #3
    and the Hat of Clumsiness GanglyLamb's Avatar
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    Unless you are dealing with some unmanaged code inside that class. More info @ http://www.codeproject.com/KB/cs/gcresdealloc.aspx

  4. #4
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    Thanks DanFraser and GanglyLamb,


    One further question which is not answered is what is the relationship between Finalize method and destructor?

    Finalize will call destructor or vice versa? Or no relationship? GC will call Finalize, but I am not sure whether GC will call destructor as well?

    Quote Originally Posted by GanglyLamb View Post
    Unless you are dealing with some unmanaged code inside that class. More info @ http://www.codeproject.com/KB/cs/gcresdealloc.aspx

    regards,
    George

  5. #5
    Confused Magos's Avatar
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    Quote Originally Posted by George2 View Post
    Thanks DanFraser and GanglyLamb,


    One further question which is not answered is what is the relationship between Finalize method and destructor?

    Finalize will call destructor or vice versa? Or no relationship? GC will call Finalize, but I am not sure whether GC will call destructor as well?




    regards,
    George
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  6. #6
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    Thanks Magos,


    I have learned that compiler will translate destructor into finalize method.

    Two further questions,

    1. Is it best practice to implement destructor or implement Finalize?

    2. What happens if we implement both destructor and Finalize? Which one will overwrite which one?


    regards,
    George

  7. #7
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    Wink

    Streams are closed and then disposed/destroyed as they act allot like, if not identical to, threads.

    It is good practice to confirm changes to a stream and then save the stream prior to closing it and initializing the destructor.

  8. #8
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    Thanks TheRaven,


    I agree and understand all of your points below, except "act allot like, if not identical to, threads" -- what do you mean?

    Quote Originally Posted by TheRaven View Post
    Streams are closed and then disposed/destroyed as they act allot like, if not identical to, threads.

    It is good practice to confirm changes to a stream and then save the stream prior to closing it and initializing the destructor.

    regards,
    George

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