Criticism associated with DOT NET

Performance

C# programs, like all programs written for the .NET and other virtual machine environments such as Java, tend to require more system resources than functionally similar applications that access machine resources more directly.

Platform

Microsoft’s current .NET implementation is only available on Windows.

Reference : Dilip Kumar Jena ( https://mstechexplore.wordpress.com )

DOT NET 3.0 – Features of C# 3.0

C# 3.0 is the current version, and was released on 19 November 2007 as part of .NET Framework 3.5. It includes new features inspired by functional programming languages such as Haskell and ML, and is driven largely by the introduction of the Language Integrated Query (LINQ) pattern to the Common Language Runtime.[9]

C# 3.0 was unveiled at the 2005 Professional Developers Conference. It is not currently standardized by any standards organisation, though it is expected that it will eventually become an ECMA and then ISO standard, as did its predecessors.

Reference : Dilip Kumar Jena ( https://mstechexplore.wordpress.com )

DOT NET 2.0 – Features of C# 2.0

New features in C# for the .NET SDK 2.0 (corresponding to the 3rd edition of the ECMA-334 standard) are:

  • Partial classes allow class implementation across more than one source file. This permits splitting up very large classes.
  • Generics or parameterized types.
  • Static classes that cannot be instantiated, and that only allow static members. This is similar to the concept of module in many procedural languages.
  • Anonymous delegates.
  • The accessibility of property accessors can be set independently.
  • Nullable value types which provides improved interaction with SQL databases.
  • Coalesce operator: (??) returns the first of its operands which is not null (or null, if no such operand exists):

Reference : Dilip Kumar Jena ( https://mstechexplore.wordpress.com )

DOT NET 4.0 – Versions and Features

Versions

1.0, 1.5, 2.0 (ECMA), 3.0

Features

C# differs from C and C++ in many ways, including:

  • There are no global variables or functions. All methods and members must be declared within classes. It is possible, however, to use static methods/variables within public classes instead of global variables/functions.
  • Multiple inheritance is not supported, although a class can implement any number of interfaces. This was a design decision by the language’s lead architect to avoid complication.
  • Full type reflection and discovery is available.

Reference : Dilip Kumar Jena ( https://mstechexplore.wordpress.com )

DOT NET 4.0 – Design goals for C#.NET

The ECMA standard lists these design goals for C#:

  • C# is intended to be a simple, modern, general-purpose, object-oriented programming language.
  • Because software robustness, durability and programmer productivity are important, the language should include strong type checking, array bounds checking, detection of attempts to use uninitialized variables, source code portability, and automatic garbage collection.
  • The language is intended for use in developing software components that can take advantage of distributed environments.
  • Programmer portability is very important, especially for those programmers already familiar with C and C++.
  • Support for internationalization is very important.
  • C# is intended to be suitable for writing applications for both hosted and embedded systems, ranging from the very large that use sophisticated operating systems, down to the very small having dedicated functions.

Reference : Dilip Kumar Jena ( https://mstechexplore.wordpress.com )

C Sharp (programming language) and History

C# is an object-oriented programming language developed by Microsoft as part of the .NET initiative and later approved as a standard by ECMA and ISO . Anders Hejlsberg leads development of the C# language, which has a procedural, object-oriented syntax based on C++ and includes influences from aspects of several other programming languages (most notably Delphi and Java) with a particular emphasis on simplification.

History

During the development of .NET, the class libraries were originally written in a language called Simple Managed C (SMC). In January 1999, Anders Hejlsberg formed a team to build a new language at the time called Cool. By the time the .NET project was publicly announced at the July 2000 Professional Developers Conference (PDC), the language had been renamed C# and the class libraries and ASP.NET runtime had been ported to C#.

C#’s principal designer and lead architect at Microsoft is Anders Hejlsberg, who was previously involved with the design of Visual J++, Borland Delphi, and Turbo Pascal. In interviews and technical papers he has stated that flaws in most major programming languages (e.g. C++, Java, Delphi, and Smalltalk) drove the fundamentals of the Common Language Runtime (CLR), which, in turn, drove the design of the C# programming language itself.

Reference : Dilip Kumar Jena ( https://mstechexplore.wordpress.com )

CSS NAVIGATION BAR

Many a time when there is a need to go for a navigation bar we simply remember javascript and write a functionality based on mouse onhouver property, we achieve the functionality but sometimes when javascript is disabled on clients computer then what the function never fires but in CSS we have functionality called hover will always run independent of javascript and writing is also very simple here is example how we can achieve it.

Step 1: Create an html file copy and paste the code below.

xmlns=”http://www.w3.org/1999/xhtml”>

<head>

<meta http-equiv=”Content-Type” content=”text/html; charset=iso-8859-1″ />

<title>Strip Menu Model</title>

<style type=”text/css”>

.stripboxmenu {padding: 0; width: 100%; /* width of the menu strip, 100% will extend to the full resolution of the screen */

border-top: 5px solid #000033; /*specify the color strip width,color */

background: transparent;

}

.stripboxmenu ul {margin:0;

margin-left: 80px; /*space between first menu item and left edge*/

padding: 0; /*Spacing between the strip and menu boxes*/

list-style: none;

}

.stripboxmenu li {display: inline;

margin: 2 2px 2 2;

padding: 0;

text-transform:uppercase;

}

.stripboxmenu a {

float: left;

display: block;

font: bold 12px Arial; /* Specify the font attributes like font style, boldness */

color: black; /* specify the color of the font */

text-decoration: none; /* remove the default underline of the anchor tag */

margin: 2 2px 2 2; /*Margin between each menu item, you can increase the spacing between the menus by adjusting the attributes*/

padding: 7px 15px 7px 15px; /*with this we can increase the width of the menu item (blue background)*/

background-color: lightblue; /*menu color*/

border-bottom: 9px solid white;

}

.stripboxmenu a:hover{

background-color: #f98a10; /*Mouseover color*/

padding-top: 20px; /*increase the height of the menu on mouseover using padding attribute */

border-bottom-color: #f98a10;

color: white;

}

/*Specify the style for current tab*/

.stripboxmenu .current a{

background-color: #000000;

padding-top: 12px;

border-bottom-color: #000000;

color: white;

}

</style>

</head>

<body>

<div>

<ul>

<li><a href=”#” title=”home”>Home</a></li>

<li><a href=”#” title=”what we do”>What We Do</a></li>

<li><a href=”#” title=”services”>Services</a></li>

<li><a href=”#” title=”clients”>Clients</a></li>

<li><a href=”#” title=”contact us”>Contact Us</a></li>

</ul>

</div>

<br style=”clear: both;” />

</body>

</html>

Step 2: now run the file in any browser it will look like this

As the html is rendered as li and anchor link inside it we can have many li inside another li to have sub sub menus.

Reference : Dilip Kumar Jena ( https://mstechexplore.wordpress.com )