Hello
I have a question about Firebird .NET Provider. Does it support sequential
reading of BLOB fields?
I read BLOB like this way:
FbDataReader rd = cmd.ExecuteReader(CommandBehavior.SequentialAccess);
rd.Read();
long bytesDownloaded = 0;
long j=0;
long fileSize = rd.GetBytes(0, 0, null, 0, 0);
byte[] buffer = new byte[BUFFERSIZE];
while (bytesDownloaded < fileSize)
{
bytesDownloaded += rd.GetBytes(0, j, buffer, 0, buffer.Length);
//Here update the progress bar and write buffer to a file
j += buffer.Length;
}
I suppose it should read a BLOB data piece by piece, but it reads the
whole BLOB data and then gets consecutive bytes from it.
It is important for me because I write application that downloads
binary data from a database on a remote server. I would like to update
a progress bar while downloading data, but the program first downloads
all data and then updates the progress bar.
Thank you in advance.
Best regards,
Jacek Salamon
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