c# create and print barcode Reference.cs, the proxy code to allow consumption of the Simple XML Web service in C#.net

Compose ECC200 in C#.net Reference.cs, the proxy code to allow consumption of the Simple XML Web service

8

As mentioned, a self-contained subquery is a subquery that can be run independently of the outer query. Self-contained subqueries are very convenient to debug, of course, compared to correlated subqueries. Scalar subqueries can appear anywhere in the query where an expression resulting in a scalar value is expected, while multivalued subqueries can appear anywhere in the query where a collection of multiple values is expected. A scalar subquery is valid when it returns a single value and also when it returns no values in which case, the value of the subquery is NULL. However, if a scalar subquery returns more than one value, a run-time error will occur. For example, run the following code three times: once as shown, a second time with LIKE N Kollar in place of LIKE N Davis , and a third time with LIKE N D% :

This file contains statements that are interpreted by the C# compiler when creating an assembly. We define our programming logic in the MyApplication.cs file, as shown here:

Figure 4-15. The setup for the GridSplitter example Notice that you cannot see all of the text in the second column. Let s add a GridSplitter control to the application so users can resize the two columns to be able to view all the text in both columns. 3. Within the XAML, place the cursor just below the TextBlock definitions you added. Then, in the Visual Studio Toolbox, double-click the GridSplitter control. This will add the xmlns to the System.Windows.Controls assembly, and it will also add the GridSplitter to the application. Then set the Background property of the GridSplitter to LightGray. The source appears as follows:

Troubleshooting Server Services 12-33

s Note Templates have changed tremendously from Joomla version 1.0 to 1.5. While many older templates used the patTemplate engine as the core technology to render their output, Joomla 1.5 has done away with patTemplate and includes it only for backward compatibility. The object framework has also been rewritten from the ground up. Therefore, if you have experience with designing older templates, the implementation and structure have changed almost entirely. Examine the sample templates in this chapter as well as the site default template to understand the workings of the new template engine. If you simply want to use a Joomla 1.0 template with a 1.5 deployment, you will need to turn on the System - Legacy plug-in in the Plugin Manager.

The code fragment defines two different credentials, both of which are associated with the user adam. Although account names may differ from system to system, the CredentialCache class is not intended to track different users. Credentials are associated with a request using the Credentials property, and the PreAuthenticate property controls whether the credentials are always set with a request or only in response to an authorization challenge. The WebRequest class and the concrete implementations are responsible for determining the best credential to use from the cache.

SELECT orderid, custid, empid, orderdate FROM Sales.Orders WHERE custid = @custid AND orderdate >= @fromdate AND orderdate < @todate; GO

Check Silverlight and WPF References When Refactoring Code Sometimes a Silverlight reference might slip into a WPF project or vice versa. This is caused by using refactoring tools. If you get unexpected compiler errors about Silverlight assemblies not being referenced in your WPF project, check the references. Process guidelines include the following: Develop the core application in Silverlight. Link the shared code between the source project and the target project. Use the same namespace for Silverlight and WPF projects. The next sections describe each of these guidelines in more detail. Develop the Core Application in Silverlight Because Silverlight is a subset of WPF, the same code will work on WPF without major modifications; therefore, you should develop your core application in Silverlight. Link the Shared Code Between the Source Project and the Target Project For files that are common to both Silverlight and WPF but need different references, you should link the files. One of the ways to do this is to use the Project Linker tool to link the shared code between the source project and the target project. Use the Same Namespace for Silverlight and WPF Projects Keep the namespaces the same between projects because the shared code requires the same namespaces. This section describes Team Build guidelines. Configure Team Build to Build in Place If you use Team Build to build a solution that holds both WPF and Silverlight projects, you might run into file collision problems. By default, Team Build copies the output from the projects to a single output folder. Because the output of the WPF and Silverlight projects should have the same name, there is a file name collision problem that will prevent you from compiling the projects or running unit tests. By setting the property CustomizableOutDir to true, you are telling Team Build to build in place instead of copying the output to a single location. This prevents the collision name problem. Additionally, if you set this property and want to run unit tests in your build, you need to specify where the TestContainers are located, as shown in the following example.

Now we ve added the appropriate <div> to the view HTML. Next, we need to populate the <div> with the appropriately structured content, and then instantiate the accordion. Eventually we will populate this with the data we pull from the USGS, but for now let s get the structure right with some dummy data. Let s populate the data in a function called setFeedItems. This nicely contains this functionality so we can use this same function later for the real feed data. So now, create this function:

The mapping between the Java java.awt.print package and the corresponding .NET types is provided in Table F-3.

Many applications don t need to be robust and recover from any and all kinds of failures . This is true of many client applications like Notepad .exe and Calc .exe . And, of course, many of us have seen Microsoft Office applications like WinWord .exe, Excel .exe, and Outlook .exe terminate due to unhandled exceptions . Also, many server-side applications, like Web servers, are stateless and are automatically restarted if they fail due to an unhandled exception . Of course some servers, like SQL Server, are all about state management and having data lost due to an unhandled exception is potentially much more disastrous . In the CLR, we have AppDomains (discussed in 22), which contain state . When an AppDomain is unloaded, all its state is unloaded . And so, if a thread in an AppDomain experiences an unhandled exception, it is OK to unload the AppDomain (which destroys all its state) without terminating the whole process .8 By definition, a CER is a block of code that must be resilient to failure . Since AppDomains can be unloaded, destroying their state, CERs are typically used to manipulate any state that is shared by multiple AppDomains or processes . CERs are useful when trying to maintain state in the face of exceptions that get thrown unexpectedly . Sometimes we refer to these kinds of exceptions as asynchronous exceptions . For example, when calling a method, the CLR has to load an assembly, create a type object in the AppDomain s loader heap, call the type s static constructor, JIT IL into native code, and so on . Any of these operations could fail, and the CLR reports the failure by throwing an exception . If any of these operations fail within a catch or finally block, then your error recovery or cleanup code won t execute in its entirety . Here is an example of code that exhibits the potential problem: