... other .NET- enabled languages. If you are a .NET developer looking to interact with database content or other external data sources, then ADO. NET is the right tool for you.Microsoft ADO. NET4 Step ... within the ADO. NET family. Part I, “Getting to Know ADO. NET, ” provides a quick over-view of ADO. NET and its fundamental role in .NET applications, then delves into the details of the main ADO. NET ... Although most readers will have no prior experience with ADO. NET, the book is also useful for those familiar with earlier versions of either ADO or ADO. NET, and who are interested in getting filled...
... aware of changes to ADO. NET in future releases that might affect your use of such statements.Using Local Transactions ADO. NET includes support for transactions with a single database through the ... transactions database operations that enable multiple record updates to be treated as a single unit. This chapter introduces ADO. NET s take on the trans-action and how your code can work with the database ... to:Understand ADO. NET s use of optimistic concurrencyPerform transactions that include multiple record updatesSpread transactions across multiple databases Database programming would...
... form. 278 Microsoft ADO. NET4 Step by StepNote At this point, the Delete button on the CustomerEditor form does not work. The example that appears later in this chapter on page 2 84 adds the necessary ... this chapter) that act as collections for named or anonymous entity types. 282 Microsoft ADO. NET4 Step by StepQuery Builder MethodEntity SQL EquivalentDescription Except EXCEPT Returns ... OrderBy extension method, passing it “it.FullName” as the order-by clause. 276 Microsoft ADO. NET4 Step by StepNote At this point, the Delete button on the CustomerEditor form does not work....
... flavors of LINQ that pertain to the ADO. NET experience. 3 04 Microsoft ADO. NET4 Step by StepChapter 17 Quick ReferenceTo Do ThisJoin two collections together with an ”inner join” Include the ... found in a second queryUse the Except extension method:(query1).Except(query2) 300 Microsoft ADO. NET4 Step by StepC#var results = (from tr in transport orderby tr.Wheels select tr.Wheels).Distinct();Visual ... the returned records.int result = (from tr in transport select tr).Count(); 296 Microsoft ADO. NET4 Step by StepInternally, LINQ uses the Where extension method and a lambda expression that...
... and then attach the SqlFunctions class name to the start of each database function used in your query. 3 24 Microsoft ADO. NET4 Step by StepC#var result = from ord in context.OrderEntries ... business logic within the database with standard Transact-SQL syntax, or with Visual Basic or C# via SQL Server’s support for the Common Language Runtime (CLR).Making direct calls to database- level ... ord.OrderDate)Working with Custom Database FunctionsIn addition to calling database- supplied functions from your LINQ queries, you can also call user-defined functions added to SQL Server with the CREATE...