[dba-VB] C# - but what happened to catch?

John,

You can make it like that also:

using (reader = file.OpenText())
	{
         reader.Read(source, 0, length);
      }

Then 'finally' code block will not be needed as reader will be
"automagically" closed by its IDispose call on exit of using code block...

-- Shamil

-----Original Message-----
From: dba-vb-bounces at databaseadvisors.com
[mailto:dba-vb-bounces at databaseadvisors.com] On Behalf Of jwcolby
Sent: Friday, July 23, 2010 11:51 PM
To: VBA
Subject: [dba-VB] C# - but what happened to catch?


http://www.jaggersoft.com/pubs/ExceptionHandlingInCSharp.htm

So they work down through this thing and finally declare "it finally works"
but where is the catch?

I thought the whole point of a try was to do error handling in a catch?




finally?

One way to solve this problem is to guard the call to reader.Close(). A
fourth attempt therefore 
might be:

private static char[] ReadSource(string filename)
{
     TextReader reader = null;
     char[] source;
     try
     {
         FileInfo file = new FileInfo(filename);
         int length = (int)file.Length;
         source = new char[length];
         reader = file.OpenText();
         reader.Read(source, 0, length);
     }
     finally
     {
         if (reader != null)
         {
             reader.Close();
         }
     }
     return source;
}

Of course, the guard on reader.Close() isn't in the "ideal" version of
ReadSource. But this is a 
reasonable version if only because it does, finally, work.

Well.. except that there is no catch.

Sigh!

-- 
John W. Colby
www.ColbyConsulting.com
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