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Using PrintDocument to print other than text files

Posted on 2009-05-13
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Last Modified: 2012-05-06
Has anybody ever used PRINTDOCUMENT to print anything else besides TEXT files? I want to print the contents of a control (picturebox1.image) and I can't determine a good solution. The image is stored in a SQL Server 2008 database table
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Question by:Ingres4719
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MogalManic earned 125 total points
ID: 24383584
It should be relativly straight forward.  Just load the image from the blob in the database and draw it to the graphics object on the PrintPage event.

Here is an example that prints an image from a file:
  http://www.java2s.com/Tutorial/CSharp/0460__GUI-Windows-Forms/PrintBMPimage.htm

Your only difference is that you need to build the Image object from the BLOB in SqlServer 2008 which you can do like this:

private Image LoadImage(SqlConnection connection)
{
// Assumes that connection is a valid SqlConnection object.
            SqlCommand command = new SqlCommand(
              "SELECT pub_id, logo FROM pub_info", connection);
 
            // Writes the BLOB to a file (*.bmp).
            Stream stream;
            // Streams the BLOB to the FileStream object.
            BinaryWriter writer;
 
            // Size of the BLOB buffer.
            int bufferSize = 100;
            // The BLOB byte[] buffer to be filled by GetBytes.
            byte[] outByte = new byte[bufferSize];
            // The bytes returned from GetBytes.
            long retval;
            // The starting position in the BLOB output.
            long startIndex = 0;
 
            // The publisher id to use in the file name.
            string pubID = "";
 
            // Open the connection and read data into the DataReader.
            connection.Open();
            SqlDataReader reader = command.ExecuteReader(CommandBehavior.SequentialAccess);
 
            while (reader.Read())
            {
                // Get the publisher id, which must occur before getting the logo.
                pubID = reader.GetString(0);
 
                // Create a file to hold the output.
                stream = new MemoryStream();
                writer = new BinaryWriter(stream);
 
                // Reset the starting byte for the new BLOB.
                startIndex = 0;
 
                // Read bytes into outByte[] and retain the number of bytes returned.
                retval = reader.GetBytes(1, startIndex, outByte, 0, bufferSize);
 
                // Continue while there are bytes beyond the size of the buffer.
                while (retval == bufferSize)
                {
                    writer.Write(outByte);
                    writer.Flush();
 
                    // Reposition start index to end of last buffer and fill buffer.
                    startIndex += bufferSize;
                    retval = reader.GetBytes(1, startIndex, outByte, 0, bufferSize);
                }
 
                // Write the remaining buffer.
                writer.Write(outByte, 0, (int)retval - 1);
                writer.Flush();
 
                // Close the output file.
                writer.Close();
                stream.Close();
            }
 
            // Close the reader and the connection.
            reader.Close();
            connection.Close();
 
            Image _Image = Image.FromStream(stream);
 
 
            return _Image;
}

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