PRO VB 2010 AND THE NET 4 0 PLATFORM

TypeArray.SetValue(typeof(string), 0); var ObjectMethodInfo=ObjectType.GetMethod("Append", TypeArray); ObjectMethodInfo.Invoke(UsingReflection, new object[] { "alex" }); Console.WriteLine( ObjectType.GetMethod("ToString", new Type[0]).Invoke(UsingReflection, null) ); Console.ReadKey()[r]

Improved Client Profile Client profile is a lean, reduced-functionality version of the full .NET Framework that was first introduced in .NET 3.5SP1. Functionality that isn’t often needed is removed from the client profile. This results in a smaller download and reduced installation time for users. A[r]

contravariance-in-visual-studio-2010.aspx • http://blogs.msdn.com/ericlippert/archive/tags/Covariance+and+Contravariance/ default.aspx • Skeet, Jon. (2008) C# in depth. Manning Publications. Dynamic Enhancements The new dynamic functionality in .NET 4.0 allows us to work with types not known[r]

21 3. Modify the Title tag to read “Code File Header.” 4. Modify the Author tag to your name. 5. Modify the Shortcut tag (this is the trigger word that activates the snippet) to “codehead” 6. Enter a description for the snippet, such as “Adds a header to a code file” 7. Snippets can be create[r]

Figure 6-7. Creating arguments for our workflow WriteLine WriteLine is an inbuilt activity that allows us to write output to the console window or a text writer. We will use it to write a message to the console window to inform us that the workflow has started. 1. Drag a WriteLine activity from the[r]

• HTTP caching Help Pages Help pages are automatically generated HTML pages that describe how to call your service and the type of response it will return, and can be very helpful for working out how to call the darn thing. Help pages are created automatically when you use the WebServiceHost class ([r]

Prior to .NET 4.0, the thread pool didn’t have any information about the context in which the threads were created, which made it difficult to optimize (for example, whether one thread depends on another). This situation changes in .NET 4.0 with a new class called Task that provide more information[r]

What am I excited about? There’s a truckload of productivity enhancements in VS2010, like snippets for Visual Web Developer. At last, snippets for ASP.NET, HTML, and JavaScript! Reference highlighting and generating types from usage are two other productivity enhancements I’m looking forward to, as[r]

C# 2010 introduces two useful features that have been present in VB for a long time: optional and named parameters (technically two separate features but often found together). CHAPTER 3  LANGUAGE AND DYNAMIC CHANGES 40 Named and Optional Parameters Named parameters allow you to pass parame[r]

NOTE VB.NET won't even let you compile the equivalent. This issue occurs due to how this type of integer is represented in binary and the overflow that occurs. After the multiplication, the number gets bigger than this type can handle, so it actually becomes negative. OK, so not many applications wi[r]

number of threads for a given workload), and we had added things like work-stealing queues to our managed scheduler. So to avoid duplicating code and to take advantage of all new enhancements, we wanted to either build the ThreadPool on TPL or build TPL on the ThreadPool. For various reasons, we too[r]

• All methods and properties in classes have to be declared public to be dynamically accessible. • You cannot use the DLR to create classes in C# or VB.NET. Apparently, the DLR does allow you to create classes, but this cannot be expressed using C# or VB.NET. • Dynamic objects cannot be passed as ar[r]

won a free booking.” 11. In the Else block, drag a WriteLine activity and change the text to “Sorry try again next time.” 12. Run your workflow. Pure XAML Workflows Activities can also be created purely in XAML, which is great news for third-party vendors and code generation. You could even hold you[r]

CHAPTER 6  WINDOWS WORKFLOW FOUNDATION 4 149 Figure 6-14. Final age validation work flow WCF/Messaging Improvements A number of enhancements have been introduced in WF4 to improve integration with WCF and to ease messaging scenarios. Correlation Correlation functionality first appeared in W[r]

</asp:Chart> CHAPTER 10  ASP.NET 249 The following code binds a series of random points to the chart: Random r = new Random(); Series series = new Series("Line"); series.ChartType = SeriesChartType.Line; for (int i = 0; i < 100; i++) { series.Points.AddY(r.Next(0,10[r]

132 Workflow Designer The designer (Figure 6-4) is used to piece together your workflow, and contains tools for debugging and monitoring it. Figure 6-4. Workflow designer It is even possible to host the workflow designer within your application. For more information on this please ref[r]

ContinueWith() method as follows: Task task3 = Task.Factory.StartNew(() => Console.WriteLine("hello task 1")) .ContinueWith((t)=> Console.WriteLine("hello task 2") ) .ContinueWith((t)=> Console.WriteLine("hello task 3") ) .ContinueWith((t)=> Console.WriteLine("hello t[r]

CHAPTER 7  WINDOWS COMMUNICATION FOUNDATION 160 4. In the Chapter7.ConfiglessHost Program.cs add the following using directive: using System.ServiceModel; 5. Enter the following code in Program.cs’s Main() method to instantiate our service: ServiceHost MyServiceHost = new ServiceHost(typeo[r]

} } 7. Once this is done we can now utilize our function in L2E queries as follows: var query = from f in ctx.Films select new { FullName = MDF.LongFilmDescription(f) }; Model First Generation EF4 allows you to create your entity model in Visual Studio and use it to generate and update database stru[r]

Hidden fields that have div elements around them will now be styled in a manner that will not interfere with user-defined CSS rules. • Menu controls are now rendered using unordered list (UL) tags (fantastic). • Validation controls will not use inline styles. • Previously some controls such as Image[r]