Tuesday, 15 January 2019

Visual Basic 6.0 Codes+billing System | Visual Studio 'Whidbey' to Ease 64-bit Transition

Do you really understand the passing parameters in Visual Basic .NET?

visual basic 6.0 codes+billing system
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Changes in Visual Basic .NET vs. Visual Basic 6.0 empowers you to shoot themselves in many different legs in different ways. In this article, Jack Prdum shows you how your feet should be a little more bulletproof.

From the author of
So, you've dipped and started moving forward from Visual Basic 6.0
Visual Basic .NET good! You are going to like what you see. Foreshadowed,
However, you should expect your proper part of "flat mast"
Hiccups on the way You know ... those mistakes after which you beat with heels
Ask your own hands for your forehead and ask yourself how you can fool this way
mistake. Relax Any programmer with no small dents
The forehead is just starting in business.

The purpose of this article is to interpret a very fundamental change in the middle
Visual Basic 6.0 and Visual Basic .NET. Its deep understanding
The difference will help you make the conversion a little easier and add a new one
Dimensions to your debugging talent For example, consider the code shown
Listing 1 and 2. (We will ignore logic list for Form1_Load event
To make things a little easier in Visual Basic. NET version.)

Listing 1. Square A Long: Visual Basic 6.0 Private Sub Form1_ Load ()
Dim N Us Long

n = 10
Square it n

end Sub


Public sub-class

Val = val * val

Final sub-list 2. A long class: Visual Basic .NET Private Sub Form 1_Load ()
Dim N Us Long

n = 10
Square it n

end Sub


Public sub-squared (Long Biol Val)

Val = val * val

end Sub
You can type Visual Basic 6.0 code shown in List1 in Visual Basic
.NET (VB6 and VBN, respectively, from now on) without changes. VB6 code in
Listing 1 produces the code shown in listing 2 for the VBN environment. if you
Place a breakpoint for the Form1_Load event at all and play both
Version, you will find that n is equal to 100 in the VB6 program, but
Equivalent to 10 in the VBN program The casual inspection of the program indicates that
There is an easy-to-use keywords possibility in the square it () logic list
The criminal creates a difference. It's easy to find that difference in true sense
Understanding the difference is a bit more involved.

When they use the word "defined", some programmers are slightly sluggish
And "announcement" about the data. They are not the same words.
Consider what happens with the simpler dimensions shown in lists 1 and 2.
In the VBN environment, the fact that we do not look dreaded
"Squiggly Line" tells us anywhere under the Dim Statement line
There are no syntax errors. There is a syntax error when there is no statement
Follow the rules of language Other errors can happen later when we run
program. For example, following syntax may cause semantic errors
Rules, but use language elements out of context. For example, the sentence
"The dog has allowed" the syntax of English to follow the rules, but the noun and
Action is used outside the context, resulting in semantic error. VBN does a
However, excellent work to catch syntax errors

Because there is no syntax errors in the slow statement, VBN then appears
Through its symbol table to see if a named N name is already there
Defined at the current scope level. A symbol is a table table
Notice that VBN keeps about every data item being used in the program.
A very simple symbol table is shown in Table 1.

Table 1. A simplified symbol table
variable name

Data type

Area

lvalue

(More features ...)

n

2

3

?

...

If there was already a variable named n already defined
Symbol table, VBN must have issued the following error message:

The local variable 'N' is already declared in the current variable.
However, because no other variable named n is present in the table
At the level of level, VBN goes to the next step.

VBN now sends a message to Windows, which is saying the following:
"Hey, Windows! It's for me, VBN. My programmer needs eight bytes
Storage for a long data type. How's it feeling? "Windows Memory
Manager (WMM) will search the operating system's free memory pool and Will
Probably seems to be a free eight-byte memory block. WMM then sends the following
Back message VBN: "Hey, VBN! It's me, WMM. Your programmers can use
The eight-byte memory block, starting with memory byte 80,000. "(If WMM
The requested archive could not be found, the VBN would have issued an out-of-memory
Error message.)

Upon receipt of good news from WMM, VBN fills in Lewolo column
Table 1 with 80,000 It is at this point that we have defined the named variable
N. If there is a data definition for a variable, and if only, storage is
Allocated for the variable by the operating system. If there is no storage
Allocated for data items, this is not a data definition. over at
Later ...

To reduce the 64-bit transition for developers, Visual Studio 'Whdby'

News

To reduce the 64-bit transition for developers, Visual Studio 'Whdby'
By Scott Baker
July 30, 2003

Taking another step in a major effort to enable 64-bit computing in its product lines, Microsoft will bring support for the code-whitebay name in the next version of Visual Studio .NET for 64-bit CPU.
Whdb is the overhaul of Visual Studio .NET which aims to support the next version of SQL Server, whose code is "Yukon" and it was set to be released in 2004. The Yukon is specifically billed for developers as a significant release of SQL Server. The .NET Common Language Runtime will be built directly into the database engine.

Details on Whdby this week as a keynote speaker by Microsoft Senior Vice President Eric Rudder for servers and tools. Rudder also discussed, in more limited details, enhancements to the next version of the studio version of some footage, code-named "Orcas".

Microsoft, Intel, AMD, HP and IBM are among the companies trying to change the market for 32-bit compatibility with 64-bit computing, and the change seems likely to include the mix of platforms for the coming years. Increasing. Microsoft recently introduced a 64-bit version of SQL Server 2000 to match 64-bit versions of Windows XP and Windows Server 2003, but the company released 64 Visual Studio 2003 with its Visual Studio 64 -Bit support was not created met. Given the slow transition for 64-bit technologies, the Whidbey development platform will be used mainly for writing 32-bit code.

Rudder said that VDB will enable existing .NET Framework 1.1 customers to avail support for 64-bit CPUs without changing the source code. This will allow customers to take advantage of the progress in security and administration and improve performance and scalability without any source code change.

Other changes included in Widebay include increasing day-to-day developer productivity, such as debugging, no-touch deployment, and a popular feature of Visual Basic 6.0 called "Edit and Continuity", which was deleted in Visual Studio .NET 2002. And 2003. Edit and Continue Developers who want to run the debugging source code with the change without the need to change the code and return it. Gives it

The release of the Okakas of Visual Studio will be with the release of "Longhorn" of Windows, and Ruder said that the developer toolset will support managed interfaces, changes in user interfaces and other planned changes for the release of operating systems.

About the Author

Scott Baker is the Chief Editor of Redmond Channel Partner magazine.

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