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A web form is the basic document type used in ASP.NET server-side development. Web forms are essentially enhanced, server-side versions of HTML pages. HTML pages use the file extension “.htm” or “.html” while ASP.NET web forms use “.aspx”. The content of web forms is not exclusively server-side: typically, web forms contain a mixture of HTML, CSS and client-side JavaScript code as well as ASP.NET server controls and server-side programming code.
In Visual Web Developer, when working with web forms, you can switch between “Source” and “Design” views or work in “Split” view to see both simultaneously. “Source” view shows you the HTML markup of the page as well as any other code. “Design” view gives an approximate rendering of the document as it will appear in the browser window. However, this is only an approximation, it is still necessary to preview the page in a browser to get a proper idea of how your page is shaping up.
Any server-side code required by your web forms can be implemented using one of two models: code-behind and inline. When the code-behind model is used, all server-side code is placed in an external file with a file extension which matches the programming language being used: “.aspx.vb”, if Visual Basic is used and “.aspx.cs” for C#. With the inline model, server-side code is placed in the head area of the web page inside a “script” tag containing a “runat=’server’” attribute.
Whenever you create a web form, Visual Web Developer asks you to choose which model to use. Choose Add New Item from the Website menu; highlight the “Web Form” icon. To use the code-behind model, activate the option “Place code in separate file”. To use the inline model, deactivate this option.
It is generally preferable to use use the code-behind model and it has the benefit of separating code from content as well as making debugging easier. Using code-behind can also be useful in collaborative situations, since it allows a web designer to work on an “.aspx” page while a programmer works on the code-behind file. However, many developers still prefer to use the inline model for some, if not all, their ASP.NET websites since they find it simpler and faster to work with a single page.
Mastering Microsoft ASP.NET is beneficial for any career. Looking to master the use of ASP.NET to build websites? We offer Microsoft ASP.NET training courses in London and all over the UK.
Tags: asp.net, Internet, software, Web Design, web development
Posted in Computers · April 10th, 2010 · Comments (0)
As more and more people are finding themselves involved in creating web content, the business of web development is no longer the preserve of professional web developers. Learning HTML and CSS is usually the first step that the general computer user will take in his or her quest to become a competent in building web pages. Programs like Adobe Dreamweaver make this process easier by generating HTML and CSS code but allowing users to edit the code for themselves in a variety of simple and convenient ways. So, learning HTML has become quite straightforward and learning the basics of CSS is not too difficult either. (Mastering CSS is another matter.)
Once you have gained some degree of competence in HTML and CSS, the next step is normally to sign up for some JavaScript training. JavaScript adds value to web pages by making their content dynamic, responding to events such as mouse rollovers and carrying out useful tasks such as the validation of forms. However, many would-be web developers shy away from JavaScript since, unlike HTML and CSS, it involves programming.
Yes, it is true that some extremely complex applications can be developed with JavaScript which would require years of programming experience. However, some of the most useful functionality which JavaScript can add to your web pages can be accomplished with just a few lines of code. Once you find the right JavaScript training course, you will be able to start writing useful scripts which can make your pages more interactive and greatly enhance the user experience of your web pages.
A word of caution, however; it doesn’t make any sense to start looking for JavaScript tuition before you become competent with HTML. JavaScript can be used in many contexts, not just on web pages. The thing that makes it approachable is the fact that it is being used in the context of HTML; so it is important to have a good understanding of the hierarchy of HTML elements that are put together to make up a web page.
If you are comfortable working with HTML and CSS, there is no reason why you shouldn’t be thinking about getting some JavaScript training. The best type of courses to attend are those which are hands-on workshops, allowing you to start writing JavaScript code, testing it, debugging and getting it working. By the end of a three day JavaScript training course, you should be confident about writing basic routines and you can build your expertise from there.
Becoming fluent in Client-side JavaScript is a good move for any IT specialist. Need to master the creation of websites with JavaScript? We offer Client-side JavaScript courses in London and all over the UK.
Tags: Internet, Javascript, software, Web Design, web development
Posted in Computers · April 8th, 2010 · Comments (0)