Download e-book for kindle: Developer's Guide to Microsoft Enterprise Library, C# by Alex Homer
By Alex Homer
Welcome to the period of software program reuse! Microsoft firm Library is helping speed up improvement via offering reusable parts and suggestions on confirmed practices. should you construct purposes that run at the Microsoft .NET Framework, whether or not they are enterprise-level company purposes or maybe really modest home windows® varieties, home windows Presentation starting place (WPF), home windows conversation origin (WCF), or ASP.NET functions, you could take advantage of utilizing firm Library. This advisor permits you to speedy take hold of what company Library can do for you, provides examples, and makes it more straightforward that you can commence experimenting with company Library. company Library is made from a sequence of program blocks, each one geared toward coping with particular cross-cutting issues. The advisor will stroll you thru the most typical utilization situations for every of the useful software blocks, including:Improving functionality through the use of a neighborhood in-memory or remoted garage cache. Calling into your database saved strategies and dealing with the consequences uncovered as a chain of gadgets for shopper aspect querying. Incorporating cryptography mechanisms to guard your information. Designing and imposing a constant technique for dealing with exceptions that happen in a variety of architectural layers of your software. imposing method logging during the big range of out-of-the field logging sinks or your customized supplier. appearing dependent and easy-to-maintain validation utilizing attributes and ideas units. The advisor additionally demonstrates quite a few methods of configuring firm Library blocks. allow company Library do the heavy lifting for you and spend extra time concentrating on what you are promoting common sense and no more on program plumbing. “You are retaining on your arms a publication that may make your lifestyles as an firm developer a lot easier.” Scott Guthrie company Vice-President, Microsoft .NET Developer Platform
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Additional resources for Developer's Guide to Microsoft Enterprise Library, C# Edition
Each data access method also has multiple overloads, designed to simplify usage and integrate—when necessary—with existing data transactions. NET DbCommand object provide the most flexibility and control for each method. • Overloads that accept a stored procedure name and a collection of values to be used as parameter values for the stored procedure are convenient when your application calls stored procedures that require parameters. 27 28 ch a pter t wo • Overloads that accept a CommandType value and a string that represents the command are convenient when your application executes inline SQL statements, or stored procedures that require no parameters.
In this section we’ll look at the use of the ExecuteReader method that returns a DataReader. You will see how to use a DataSet with the Data Access block methods later in this chapter. Reading Rows Using a Query with No Parameters Simple queries consisting of an inline SQL statement or a stored procedure, which take no parameters, can be executed using the ExecuteReader method overload that accepts a CommandType value and a SQL statement or stored procedure name as a string. The following code shows the simplest approach for a stored procedure, where you can also omit the CommandType parameter.
You don’t need to create a DataAdapter or call the Fill method. The ExecuteDataSet method manages the connection, and carries out all the tasks required to populate your DataSet. In a similar way, the Database class allows you to obtain a DataReader, execute commands directly, and update the database from a DataSet. The block also supports transactions to help you manage multiple operations that can be rolled back if an error occurs. NET, the Data Access block also provides techniques for asynchronous data access for databases that support this feature, and provides the ability to return data as a sequence of objects suitable for client-side querying using techniques such as Language Integrated Query (LINQ).
Developer's Guide to Microsoft Enterprise Library, C# Edition by Alex Homer