how to make qr code generator in vb.net FIGURE 3-5 Entering Windows Live ID credentials on Microsoft Dynamics CRM Online in visual basic

Add QR-Code in visual basic FIGURE 3-5 Entering Windows Live ID credentials on Microsoft Dynamics CRM Online

However, this code won t compile . The problem is that variables passed by reference to a method must be of the same type as declared in the method signature . In other words, Swap expects two Object references, not two String references . To swap the two String references, you must do this:

After displaying the contents of the cache after loading the list of products, the example code then continues by attempting once again to retrieve the value and display its properties. You can see the entire output from this example here.

When Windows NT first came out in 1993 a new password storage method was introduced. This mechanism is far simpler than the LM hash, as shown in Figure 2-3.

EnvironmentOverride In this dictionary you can place any values that will override environment variables. For example you could override the TEMP or PATH environment variables. These overrides will affect only the tool that is executed by the task, not the entire build process. ExitCode Contains the exit code of the tool. This is an MSBuild Output property so its value will be available to build les using the task.

Observe that also in this plan the Compute Scalar operator calculates a scalar variable called Expr1003 . However, if you examine the Properties dialog box for this operator, you will find that the expression that is assigned to the variable is different than in the previous plan: [Expr1003] = Scalar Operator([InsideTSQL2008].[dbo].[AddOne]([InsideTSQL2008].[dbo] .[Nums].[n])) . The difference is that this time you see the call to the AddOne UDF and not the expression n + 1 . At first you might not think this makes any difference after all, the query does have an expression that invokes the UDF . However, the fact that the UDF call appears in the plan is an indication that the function s expression wasn t inlined in the query . In other words, SQL Server makes a separate call to the UDF per each row, and each such invocation bears some extra cost compared to the corresponding inline expression . To give you a sense of what this extra cost translates to, this query ran for five seconds on my system remember that the query that had the expression inline ran for under a second . The high cost of the last query has to do with the overhead of each function call . You can easily observe the multiple invocations of the UDF by running a SQL Server Profiler trace with the SP:Completed (or SP:Starting) event while the query is running . To limit the size of the trace, you might want to test the query against fewer rows for example, with the filter n <= 10 . Figure 2-3 shows the events I got when I traced this query . The encapsulation of your code in UDFs give you some important programmatic benefits, such as simplifying your code, reusability of logic, and so on . But you need to consider the negative impact on performance . Does this mean you must make a choice between programmatic benefits and performance Fortunately, there is a solution that allows you

Bugs by severity Expect to see severity 1 and severity 2 bug find rates drop as the project progresses, while percentage of severity 3 and lower bugs increases. That is, expect to find the serious bugs earlier in the product cycle. Where found This measure can vary depending on the type of product being tested. Understanding where in the product the bugs have been found can reveal risky areas of the product. Knowing how the bug was found can aid in root cause analysis and implementation of defect prevention techniques.

In this section, I m going to explain the relationship at runtime between types, objects, a thread s stack, and the managed heap . Furthermore, I will also explain the difference between calling static methods, instance methods, and virtual methods . Let s start off with some fundamentals of computers . What I m about to describe is not specific to the CLR at all, but I m going to describe it so that we have a working foundation, and then I ll modify the discussion to incorporate CLR-specific information . Figure 4-2 shows a single Microsoft Windows process that has the CLR loaded into it . In this process there may be many threads . When a thread is created, it is allocated a 1-MB stack . This stack space is used for passing arguments to a method and for local variables defined within a method . In Figure 4-2, the memory for one thread s stack is shown (on the right) . Stacks build from high-memory addresses to low-memory addresses . In the figure, this thread has been executing some code, and its stack has some data on it already (shown as the shaded area at the top of the stack) . Now, imagine that the thread has executed some code that calls the M1 method .

Figure 6-3. The HTML page won t support Excel s list features. You can open the web page in either Excel or Internet Explorer (IE). To open the page, open the HTML file. The file opens as a regular workbook in Excel. The web page is shown in the IE browser in Figure 6-4. The page is formatted much like the workbook, including sheet tabs. You can edit this page using FrontPage, or any other application that can edit HTML.

This query produces the following results:

string welcomeString = null; #if win2000 //compiling for Windows 2000 platform welcomeString = "Welcome to Windows 2000"; #elif win98 //compiling for Windows 98 platform welcomeString = "Welcome to Windows 98"; #elif win95 //compiling for Windows 95 platform welcomeString = "Welcome to Windows 95"; #else //compiling for all other platforms welcomeString = "Welcome to Windows"; #endif

In this chapter, you took a brief look at some of the common form controls that are provided with Silverlight. In addition, you looked at how to use a modal window in Silverlight, a feature new to Silverlight 3. The chapter was meant only as an introduction to the controls. You will be looking at these controls in more advanced capacities in the upcoming chapters. In the next chapter, you will look at the Silverlight list controls: ListBox and DataGrid.