qr code generator c# Using Filestream in Visual C#

Making QR Code ISO/IEC18004 in Visual C# Using Filestream

Using Filestream
Paint QR Code JIS X 0510 In Visual C#.NET
Using Barcode generation for Visual Studio .NET Control to generate, create QR Code 2d barcode image in .NET framework applications.
www.OnBarcode.com
Denso QR Bar Code Recognizer In C#
Using Barcode recognizer for .NET Control to read, scan read, scan image in .NET applications.
www.OnBarcode.com
Filestream is an option that can be specified for columns of the varbinary(max) data type. In essence, it makes SQL Server store the data in these columns in separate files in the file system instead of inside the actual database files. The use of Filestream can greatly enhance both the read and the write performance of this type of data. Filestream is typically recommended if the data that you store in the column is at least 1 megabyte (MB) in size. Filestream can hurt performance if you have very frequent inserts of small BLOB data. To be able to use Filestream, you need to enable it in SQL Server by setting the sp_configure option to 1, 2, or 3. Setting the configuration option to 1 allows only T-SQL access to the Filestream data, and setting the option to 2 also allows direct file access to the data through the file system. Finally, setting the option to 3 allows access to the Filestream data through a file (network) share. To use Filestream, you must also create a filegroup that contains a Filestream database file. The Filestream database file isn t really a file; it is a directory where the Filestream data files are stored. A Filestream filegroup can have only one database file.
Create Bar Code In C#.NET
Using Barcode encoder for .NET framework Control to generate, create barcode image in VS .NET applications.
www.OnBarcode.com
Reading Barcode In C#.NET
Using Barcode scanner for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
310 CHAPTER 7 Extending Microsoft SQL Server Functionality with XML, SQLCLR, and Filestream
QR Code ISO/IEC18004 Printer In Visual Studio .NET
Using Barcode creation for ASP.NET Control to generate, create QR image in ASP.NET applications.
www.OnBarcode.com
Denso QR Bar Code Creator In VS .NET
Using Barcode generator for .NET framework Control to generate, create QR Code ISO/IEC18004 image in Visual Studio .NET applications.
www.OnBarcode.com
The following code example shows how to add a Filestream filegroup to the AdventureWorks database (the FILENAME string has been formatted to fit on the printed page):
Generate QR Code ISO/IEC18004 In Visual Basic .NET
Using Barcode generator for Visual Studio .NET Control to generate, create QR image in Visual Studio .NET applications.
www.OnBarcode.com
Painting EAN / UCC - 13 In C#
Using Barcode generator for Visual Studio .NET Control to generate, create EAN / UCC - 13 image in Visual Studio .NET applications.
www.OnBarcode.com
ALTER DATABASE AdventureWorks ADD FILEGROUP FileStreamPhotosFG CONTAINS FILESTREAM;
Encode PDF 417 In C#.NET
Using Barcode creator for .NET Control to generate, create PDF-417 2d barcode image in VS .NET applications.
www.OnBarcode.com
Generate DataMatrix In C#
Using Barcode printer for VS .NET Control to generate, create ECC200 image in VS .NET applications.
www.OnBarcode.com
ALTER DATABASE AdventureWorks ADD FILE ( NAME = 'FileStreamPhotosDF' ,FILENAME = 'C:\Program Files\Microsoft SQL Server\ MSSQL10.MSSQLSERVER\MSSQL\DATA\FileStreamPhotosDF' ) TO FILEGROUP FileStreamPhotosFG;
Bar Code Drawer In C#
Using Barcode creation for .NET Control to generate, create barcode image in .NET framework applications.
www.OnBarcode.com
British Royal Mail 4-State Customer Barcode Generator In Visual C#.NET
Using Barcode maker for VS .NET Control to generate, create RoyalMail4SCC image in Visual Studio .NET applications.
www.OnBarcode.com
When the filegroup has been added, varbinary(max) Filestream columns can be created. For a table to contain Filestream columns, it must have a uniqueidentifier column marked with the property ROWGUIDCOL and having a unique constraint defined on it. The following code sample shows how to add a ROWGUIDCOL to the Production.ProductPhoto table:
Encode PDF 417 In .NET
Using Barcode generator for VS .NET Control to generate, create PDF 417 image in Visual Studio .NET applications.
www.OnBarcode.com
Code 39 Full ASCII Scanner In C#.NET
Using Barcode reader for Visual Studio .NET Control to read, scan read, scan image in VS .NET applications.
www.OnBarcode.com
ALTER TABLE Production.ProductPhoto ADD RowGuid UNIQUEIDENTIFIER NOT NULL ROWGUIDCOL CONSTRAINT DFProductPhotoRowGuid DEFAULT NEWSEQUENTIALID() CONSTRAINT UQProductPhotoRowGuid UNIQUE;
Making Bar Code In Objective-C
Using Barcode drawer for iPhone Control to generate, create bar code image in iPhone applications.
www.OnBarcode.com
Print UPCA In Java
Using Barcode creation for Eclipse BIRT Control to generate, create UPC A image in BIRT reports applications.
www.OnBarcode.com
Now we can add a varbinary(max) Filestream column and copy data into it using regular T-SQL:
Bar Code Reader In Visual Studio .NET
Using Barcode Control SDK for ASP.NET Control to generate, create, read, scan barcode image in ASP.NET applications.
www.OnBarcode.com
Bar Code Generation In VB.NET
Using Barcode creation for VS .NET Control to generate, create bar code image in Visual Studio .NET applications.
www.OnBarcode.com
ALTER TABLE Production.ProductPhoto ADD ThumbNailPhotoAsFileStream VARBINARY(MAX) FILESTREAM NULL; GO
EAN-13 Creator In Objective-C
Using Barcode generator for iPhone Control to generate, create UPC - 13 image in iPhone applications.
www.OnBarcode.com
Barcode Creation In Visual Studio .NET
Using Barcode maker for Visual Studio .NET Control to generate, create barcode image in .NET applications.
www.OnBarcode.com
UPDATE Production.ProductPhoto SET ThumbNailPhotoAsFileStream = ThumbNailPhoto;
If we examine the C:\Program Files\Microsoft SQL Server\MSSQL10.MSSQLSERVER\MSSQL\ DATA\FileStreamPhotosDF folder, we find the following items in it:
n n n
The $FSLOG directory acts as the Filestream data s transaction log. The Filestream.hdr file stores metadata about the Filestream filegroup. All other directories with GUID names, such as 09A42544-450A-4932-B25F-5E33F117C179, are the directories that store the actual data.
When you delete Filestream data (either by using an UPDATE or a DELETE statement), SQL Server doesn t immediately delete the file. Instead, the files are deleted when the Filestream garbage collection process is run. This process in turn is run when the database checkpoint process is executed.
Lesson 2: Using SQLCLR and Filestream CHAPTER 7 311
Lesson Summary
To use user-defined objects based on SQLCLR, SQLCLR must be enabled on the SQL Server instance. The objects most suitable for development using SQLCLR are UDFs and user-defined aggregates. If you create UDTs based on SQLCLR, make sure that you test them thoroughly. Consider using Filestream if the relevant data mostly involves storing streams larger than 1 MB.
Pr actice
SQLcLR
In this practice, you create and use both a scalar and table-valued CLR UDF in the AdventureWorks database.
e xercise 1
Create a Scalar UDF
In this exercise, you create a scalar UDF that allows a datetime2 value to be converted to a string by applying a format string (such as yyyy-MM-dd).
1. 2. 3.
Create a new directory in the root of your hard drive called TK433SQLCLR (the path would be C:\TK433SQLCLR). Create a new file in the C:\TK433SQLCLR directory called ScalarUDF.cs (if you want to use C# to create the function) or ScalarUDF.vb (if you want to use Visual Basic .NET). Type the following code block into the file using a text editor such as Notepad.exe, and then save and close the file:
Copyright © OnBarcode.com . All rights reserved.