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Download e-book for iPad: Developer's Guide to Microsoft Enterprise Library, Visual by Alex Homer

By Alex Homer

ISBN-10: 0735651779

ISBN-13: 9780735651777

ISBN-10: 0735659672

ISBN-13: 9780735659674

Welcome to the period of software program reuse! Microsoft company Library is helping speed up improvement through offering reusable parts and information on confirmed practices. when you construct functions that run at the Microsoft .NET Framework, whether or not they are enterprise-level company functions or perhaps rather modest home windows® kinds, home windows Presentation origin (WPF), home windows communique beginning (WCF), or ASP.NET functions, you could take advantage of utilizing firm Library. This consultant enables you to quick seize what company Library can do for you, offers examples, and makes it more straightforward that you should commence experimenting with company Library. firm Library is made of a sequence of software blocks, each one geared toward handling particular cross-cutting concerns.

The advisor will stroll you thru the most typical utilization eventualities for every of the sensible program blocks, including:

  • Improving functionality by using an area in-memory or remoted garage cache.
  • Calling into your database saved tactics and dealing with the implications uncovered as a chain of items for customer facet querying.
  • Incorporating cryptography mechanisms to guard your data.
  • Designing and enforcing a constant method for handling exceptions that take place in a variety of architectural layers of your application.
  • Implementing procedure logging during the big variety of out-of-the field logging sinks or your customized provider.
  • Performing based and easy-to-maintain validation utilizing attributes and principles sets.

The advisor additionally demonstrates a variety of methods of configuring company Library blocks. enable company Library do the heavy lifting for you and spend extra time targeting your corporation common sense and no more on program plumbing.

“You are preserving on your arms a ebook that may make your existence as an firm developer an awful lot easier.” Scott Guthrie company Vice-President, Microsoft .NET Developer Platform

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Extra info for Developer's Guide to Microsoft Enterprise Library, Visual Basic Edition

Example text

The following code shows how you can execute a stored procedure that takes a single string parameter. ExecuteReader("ListOrdersByState", _ New Object() {"Colorado"}) DisplayRowValues(reader) End Using The example named Return rows using a stored procedure with parameters uses this code to query the sample database, and generates the following output. much a do a bout data access Id = 1 Status = DRAFT CreatedOn = 01/02/2009 11:12:06 Name = Adjustable Race LastName = Abbas FirstName = Syed ShipStreet = 123 Elm Street ShipCity = Denver ShipZipCode = 12345 ShippingOption = Two-day shipping State = Colorado Id = 2 Status = DRAFT CreatedOn = 03/02/2009 01:12:06 Name = All-Purpose Bike Stand LastName = Abel FirstName = Catherine ShipStreet = 321 Cedar Court ShipCity = Denver ShipZipCode = 12345 ShippingOption = One-day shipping State = Colorado Reading Rows Using Queries with Named Parameters The technique in the previous example of supplying just an array of parameter values is easy and efficient, but has some limitations.

For full details of all of the settings that you can specify, see the documentation installed with Enterprise Library for that block. 7. To delete a section or provider, right-click the section or provider and click Delete on the shortcut menu. To change the order of providers when more than one is configured for a block, right-click the section or provider and click the Move Up or Move Down command on the shortcut menu. welcome to the libr a ry 8. To set the default provider for a block, such as the default Database for the Data Access block, click the down-pointing double arrow icon next to the block name and select the default provider name from the drop-down list.

Configuration Depending on how you decide to work with Enterprise Library in terms of instantiating the objects it contains, you may need to import two more namespaces. We’ ll come to this when we look at object instantiation in Enterprise Library a little later in this chapter. You will also need to import the namespaces for the specific application blocks you are using. Most of the Enterprise Library assemblies contain several namespaces to organize the contents. For example, as you can see in Figure 3, the main assembly for the Logging block (one of the more complex blocks) contains a dozen subsidiary namespaces.

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Developer's Guide to Microsoft Enterprise Library, Visual Basic Edition by Alex Homer


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