Re: Idea for Reader optimisation for reading

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: Tian Min Huang (timhuang_at_online.microsoft.com)
Date: 02/25/04 

Date: Wed, 25 Feb 2004 08:39:16 GMT

Hello,

Thanks for your feedback. I understand your concerns, and now I'd like to
share the following information with you:

1. Did you specify the encoding when creating the BinaryReader? If you did
not specify, it will use UTF8Encoding and I believe that may be the reason
why PeekChar may return -1 on some characters. I suggest you to use ASCII
encoding as the following to check if it works:

   BinaryReader r = new BinaryReader(fs, System.Text.Encoding.ASCII);

2. In addition, I do not recommend you use PeekChar to check the EOF
because it also returns -1 when the underlying stream does not support
seeking. Alternatively, I suggest that you can get the length of file and
then get the bytes in a loop. Please refer to the following code snippet:

//--------------------code snippet--------------------
FileInfo fi=new FileInfo(FILE_NAME);
FileStream fs = fi.OpenRead();
BinaryReader r = new BinaryReader(fs);

// Read data
for(int n =0; n<fi.Length; n++)
{
        Console.WriteLine(r.ReadByte());
}
.....
//--------------------------end of----------------------

I am standing by for your feedback.

Have a nice day!

Regards,

HuangTM
Microsoft Online Partner Support
MCSE/MCSD

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