The Art of SQL Server FILESTREAM - Red Gate Software

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Chapter 5: FILESTREAM with ASP.NET and Silverlight//Begin a transactionSqlTransaction transaction = cn.BeginTransaction("ItemTran");cmd.Transaction = transaction;byte[] txContext = null;string filePath = string.Empty;try{//Execute the commandSqlDataReader reader = cmd.ExecuteReader();if (reader.Read()){txContext = (reader["txContext"] as byte[]);filePath = reader["filePath"].ToString();}Reader.Close();//Open the FILESTREAM data file for writingSqlFileStream fs = new SqlFileStream(filePath, txContext,FileAccess.Write);//Get a stream object pointing to the content to be uploadedStream localFile = fpItemImage.FileContent;//Start transferring data into FILESTREAM data file// If you are using .NET 4.0 the next 11 lines of code can be// replaced with a single call to "localFile.CopyTo(fs, 4096);"BinaryWriter bw = new BinaryWriter(fs);const int bufferSize = 4096;byte[] buffer = new byte[bufferSize];int byteCount = localFile.Read(buffer, 0, bufferSize);while (byteCount == bufferSize){bw.Write(buffer, 0, bytes);bw.Flush();byteCount = localFile.Read(buffer, 0, bufferSize);}Bw.Close();}//Close the fileslocalFile.Close();fs.Close();174
Chapter 5: FILESTREAM with ASP.NET and Silverlight}catch (Exception ex){//Do something with the exception}finally{//Commit the transaction and close the connectionCmd.Transaction.Commit();cn.Close();}Listing 5-8:Saving item information to a FILESTREAM database.Running the applicationWe have successfully completed the coding for this lab, so it is time for us to run theapplication and see it in action: press F5 or click the Start Debugging button on thetoolbar. This will open the web page in a new web browser instance, as shown inFigure 5-3.Figure 5-3:The web page.Enter an item number and description, select an image file using the Browse button, andthen click Save to insert the information into the database.175
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DBA HandbooksThe Art ofSQL Server F
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Copyright June 2012ISBN 978-1-90643
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Updating and deleting FILESTREAM da
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Creating the stored procedure to fe
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File Backups and Piecemeal Restores
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Setting Up the Server for FileTable
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Using SSMS to check that FILESTREAM
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Sven AeltermanSven Aelterman is a l
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Finding time for writing such a len
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IntroductionWhen I first started my
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The secondary audience for this boo
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Chapter 1: Storing and ManagingUnst
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Chapter 1: Storing and Managing Uns
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Setting the access levelChapter 1:
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Data usage patternsChapter 1: Stori
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Chapter 2: Getting Started with FIL
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Chapter 3: Accessing FILESTREAMData
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Chapter 3: Accessing FILESTREAM Dat
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Chapter 5: FILESTREAM with ASP.NET
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Chapter 6: FILESTREAM with SSIS and
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Creating a data sourceChapter 6: FI
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Chapter 7: FILESTREAM Database Admi
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Fixing corrupted dataChapter 7: FIL
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Chapter 8: Backup and Restore for F
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Chapter 9: Investigating FILESTREAM
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Chapter 10: Integrating FILESTREAMw
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Chapter 10: Integrating FILESTREAM
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Chapter 11: FileTableThe addition o
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Chapter 11: FileTableColumn Namestr
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Chapter 11: FileTableColumn Nameis_
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Chapter 11: FileTableUSE NorthPoleG
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Chapter 11: FileTableMore on using
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Chapter 11: FileTableFigure 11-1:Se
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Chapter 11: FileTableperformance wh
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Chapter 11: FileTableany files or f
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Chapter 11: FileTable-- If the 'Nor
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Chapter 11: FileTableBy default, th
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Chapter 11: FileTableIt is possible
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Chapter 11: FileTableFigure 11-4:Ch
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Chapter 11: FileTableFurthermore, i
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Chapter 11: FileTableCreating folde
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Chapter 11: FileTableAdding rows us
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Chapter 11: FileTable-- Find the pa
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Chapter 11: FileTable-- Insert a ne
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Chapter 11: FileTablestring SqlText
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Chapter 11: FileTableAs a best prac
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Chapter 11: FileTableSELECT file_st
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Chapter 11: FileTable• non_transa
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Chapter 11: FileTable• filename_c
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Chapter 11: FileTableListing 11-29
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Chapter 11: FileTableLanguage suppo
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Chapter 11: FileTableInvestigating
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Chapter 12: Planning, Configuration
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Appendix A: Configuring FILESTREAMo
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Appendix A: Configuring FILESTREAM
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About Red GateYou know those annoyi
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