Re: Search through a (large) binary file.

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Peter,

[. . .]
You can use the Position property to adjust from where you're reading in
the file; save the current position, set the current position to 4 bytes
earlier than the offset of the found string, read the 4 bytes of
interest, then restore the current position to the previously saved
value.
Int64 Offset1 = (ibBaseOffset + ibOffset); offset = 41152
Int64 Offset2 = stream.Position; offset = 49152

Why is Offset1 not equal to Offset2 ?
Offset1 is the right offset. Changing the block size has affect ( byte[]
rgbBlockCur = new byte[4096]; )

I tried several options with stream.Seek(Offset, SeekOrigin) to set the
current position and restore the previously saved position.
But when I read the previous 4 bytes and restore the position to the
previous saved,
the returned offset is not right anymore. The search continues, but it's not
the right offset anymore.

The first 'hit' has a right offset and the previous read bytes are right.
After restoring the position to the previous saved, then it goes wrong.

Michelle



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