filestream

reading bytes in a file in vb.net

After getting the file name I create a new filestream and load all the bytes from the FileStream into a byte array, now I need to get certain bytes and store them in fields like the second 4 bytes are the time the file was created. When storing these in the variables should I store them as bytes or as string/integers/etc. Or have I done...

Access Denied in SQL 2008 EXPRESS

Well now at the end of my program I'm facing an access denied Dim sqlFile As SqlFileStream = New SqlFileStream(filePathName, fileToken, FileAccess.Write) This is the last command in order to write the STREAM image in the table. This command returns me an 'Access Denied' error no other comment. I have give in my account a Login rela...

Is it possible to not use Windows Authentication w/ a SQL Server Filestream store and using streaming access to a file within it?

Everything I've seen and experienced so far suggests that you must use Windows Authentication if you want to access a file via Win32 from within the a databases filestream store but is it possible to use jsut SQL authentication somehow? ...

ACCESS DENIED error from stream file open

Possible Duplicate: Access Denied in SQL 2008 EXPRESS I have create my code in order to write images in a remote sql server All the details of accessing and writing are fine until now, including the system account right now i'm in the command of: SqlFileStream = New SqlFileStream(filePathName, fileToken, FileAccess.Write) an...

C equivalent to fstream's peek

Hi, I know in C++, you're able to peek at the next character by using: in.peek();. How would I go about this when trying to "peek" at the next character of a file in C? ...

Memory leak using SQL FileStream

Hi, I have an application that uses a SQL FILESTREAM to store images. I insert a LOT of images (several millions images per days). After a while, the machine stops responding and seem to be out of memory... Looking at the memory usage of the PC, we don't see any process taking a lot of memory (neither SQL or our application). We tri...

SQL Server 2008 - FileStream - Disabling 8.3 name and last access time for files

I am trying to configure SQL Server 2008 filestream in my machine by following the below article :- http://msdn.microsoft.com/en-us/library/cc949109(lightweight).aspx The article says one should disable 8.3 names and the last access for files in windows for performance reasons before proceeding to the SQL Server changes for enabling fi...

ASP.NET, Streamwriter, Filestream - 0 byte file

This works: using (StreamWriter stw = new StreamWriter(Server.MapPath("\\xml\\file.xml"))) { stw.Write(xmlEncStr); } This creates an empty file: using (FileStream file = new FileStream(Server.MapPath("\\xml\\file.xml"), FileMode.CreateNew)) { using (StreamWriter sw = new StreamWriter(file)) { sw.Write(xmlEncStr); ...

Best approach for a Binary column with LINQ to SQL

My SQL 2008 table, let's call it tblDocument, has columns like name, creator, sequenceNumber, followed by a "DocumentContent" varbinary(max) column that contains the document itself. I'm using LINQ to SQL. If I want to display the rows of tblDocument in an interface without retrieving a multi-megabyte binary over the wire for each row,...

Attempted to perform an unauthorized operation

Now I use the following code: Public Function SetACL(ByVal filename As String, ByVal account As String, ByVal sender As Object, ByVal e As System.EventArgs) As Boolean Try Dim rule As FileSystemAccessRule = New FileSystemAccessRule(account, FileSystemRights.Write, AccessControlType.Allow) Dim fp As Pe...

FILESTREAM and partitioned storage

I have a question about the current implementation of the FILESTREAM type for SQL Server 2008. Say I have a table that stores my documents using FILESTREAM. After a year, I want to archive (move) off a number of these documents to a different server. Is it possible to have FILESTREAM documents on two separate drives? Or do they have ...

SQL Server Filestream - Delete "speed"

Hello, I'm working with the filestream datatype for the first time (SQL Server 2008) and I'm running into issues when I am doing some fast insert/deletes. Basically the speed at which the files are actually removed from the FileSystem is way slower then the insert/delete speed even if I invoke the garbage collector manually (As far as I ...

SQL Server 2008, Physical Location of FILESTREAM Data...

hi, How could I know the Physical location (so i can see it in windows explorer) path of a Filestream data that I've just inserted into db? Thanks ...

iTextSharp + FileStream = Corrupt PDF file

Hi, I am trying to create a pdf file with iTextSharp. My attempt writes the content of the pdf to a MemoryStream so I can write the result both into file and a database BLOB. The file gets created, has a size of about 21kB and it looks like a pdf when opend with Notepad++. But my PDF viewer says it's currupted. Here is a little code sni...

SQL Server 2008 Filestream Win32 error without a network cable!

I have a SQL Server 2008 database utilizing Filestreaming and all works fine and dandy apart from under one very strange circumstance. If i have my database on, say a laptop, on a locally installed version of SQL Server 2008 and am connected to the network all works fine. If i unplug the network cable, after a while the SqlFileStream c...

Image Saving explanation

I have manage to write images on an sql server 2008 But i see that in the image record writing the same bytes in all of the images And also it creates on the remote disk under a special catalogue a file which finally is the image Is there anybody which can explain me the flow chart of writing an image in sql server? What is contain...

Fileupload to varbinary FileStream Field ASP.net

Hello I want to upload files from fileupload control and save them as varbinary Filestream in the database. First of all, does this make sense? Would you recommend this? Then, how does it work? I want to be able to upload Imagefiles as well as .doc and .xls. so when i have uploaded a .xls, how would i save it to the Database(i'm goin...

SQL Server 2008's Filestream location

I have approximately 7 terabytes of various media files (pdf's, jpg's, tiff's) that currently reside on a very beefed up file server. I am looking at moving the data to SQL Server 2008 and using the Filestream attribute to help me manage the data. I want to do this because I have webpages that manage this media, and they (the webpages) a...

FileSystemWatcher triggers for filestream open.

Hi, I have a filesystemwatcher that will trigger an event when a file is modified. I want to read from that file once the lock has been removed. At the moment I am just trying to open the file once the event is triggered, when A large file is being copied the file lock stays on for a while after the events have been sent, preventing the ...

Open C: Directly with `FileStream` without `CreateFile` API

I trying to open C: directly with FileStream without success: new FileStream("C:", FileMode.Open, FileAccess.Read, FileShare.ReadWrite); System.UnauthorizedAccessException was unhandled Message="Access to the path 'C:\' is denied." Source="mscorlib" StackTrace: in System.IO.__Error.WinIOError(Int32 errorCode, Str...