doubt related to close() method

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As per my understanding, dispose() method is used to deallocate memory space for unmanaged resources.

Now when we create an object of streamreader class, we can call close method multiple time(i.e. we can open and close multiple file).
e.g.

C#

StreamReader sreader=new StreamReader("a.txt");
...
sreader.Close();
sreader=new StreamReader("b.txt");
...
sreader.Close();

Now in above code if I didn't call sreader.Dispose(), then does memory deallocation will occur using finalize() method(i.e. by garbage collector) or does it will going to create any memory leaks.

Please let me know if you have any idea.

Posted 14-Nov-11 18:35pm

Sujeet Pardeshi

Updated 14-Nov-11 18:36pm

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Sergey Alexandrovich Kryukov · Accepted Answer · 2011-11-14T18:49:00

Generally, Finalize has nothing to do with Dispose. You never need to call Finalize as GC does it, but you need to call Dispose for all object implementing this interface. The call to Close calls Dispose(true), according to http://msdn.microsoft.com/en-us/library/system.io.streamreader.close.aspx[^].

Calling this method is important to free unmanaged resources and especially important for StreamWriter (otherwise you can loose the results of writing), so the call should be done in finally part of try-finally block:

C#

sreader=new StreamReader("b.txt");
try {
   //...
} finally {
   sreader.Close();
}

—SA

doubt related to close() method

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doubt related to close() method

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