76 HTML courses in Ewell delivered Live Online

Dreamweaver training course description Dreamweaver is a web authoring program that allows you to build professional quality websites. This course starts with a tour of Dreamweaver and customising your workspaces, moving onto HTML and CSS basics. Page layouts, templates and interactive pages are also covered. The final session covers how to use Dreamweaver as a HTML editor. Hands on session follow all the major theory chapters. What will you learn Use Dreamweaver to create websites. Customise Dreamweaver. Use templates. Add interactivity to web pages. Use Dreamweaver to edit HTML code. Dreamweaver training course details Who will benefit: Anyone wishing to create or edit websites. Prerequisites: None. Duration 3 days Dreamweaver training course contents Getting started Installing the programme, Updating to the latest version,, Online content, On first launch, Choosing the program colour theme, Setting up the workspace, Defining a Dreamweaver site, Checking for updates, Additional resources. Customizing your workspace Touring the workspace, Using the start screen, Exploring new feature guides, Setting interface preferences, Switching and splitting views, Selecting a workspace layout, Personalising Dreamweaver, Working with extract, Creating custom keyboard shortcuts, Using the Property inspector, Using the Related Files interface, Using tag selectors, Using the CSS Designer, Using the Visual Media Query (VMQ) interface, Using the DOM viewer, Using Element dialogs, displays and inspectors, Setting up version control in Dreamweaver, Exploring experimenting and learning. HTML Basics What is HTML? Where did HTML begin? Frequently used HTML elements, What's new in HTML5. CSS Basics What is CSS? HTML vs. CSS formatting, HTML defaults, CSS box model, Applying CSS styling, Multiples, classes and ids. Web design basics Developing a new website, Scenario, Working with thumbnails and wireframes, Creating a page layout Evaluating page design options, Working with predefined layouts, Styling an existing layout, Styling elements using the Extract panel, Extracting text from a Photoshop mockup, Troubleshooting CSS styling, Extracting text styling from a Photoshop mockup, Creating a gradient background using Extract, Extracting image assets from a mockup, Adding CSS background effects in code, Finishing up the layout. Working with templates Creating a template from an existing layout, Inserting editable regions, Inserting editable regions, Inserting HTML entities, Inserting metadata, Validating HTML code, Producing child pages, Moving CSS styles to linked file, Updating a template. Working with text, lists and tables Previewing the completed file, Creating and styling text, Creating lists, Creating and styling tables, Spell-checking webpages, Finding and replacing text. Working with images Web image basics, Previewing completed files, Inserting an image, Controlling image positions with CSS classes, Working with the Insert panel, Using the Insert menu, Inserting non-web file types, Working with Photoshop Smart Objects, Copying and pasting images from Photoshop, Inserting images by drag and drop, Optimizing images with the Property inspector. Working with navigation Hyperlinks, previewing the completed file, creating internal and external hyperlinks, setting up email links, Creating image-based links, Targeting page elements, Locking an element on the screen, Styling a navigation menu, Checking your page, Adding destination links. Adding interactivity Dreamweaver behaviours, Previewing the completed file, Working with Dreamweaver behaviours, Working with jQuery Accordion widgets, Inserting a jQuery Accordion widget, Styling a jQuery Accordion. Publishing to the web Defining a remote site, Cloaking folders and files, Wrapping things up, Putting your site online, Synchronizing local and remote sites. Working with code Creating HTML code, multicursor support, commenting your code, Working with CSS preprocessors, Selecting code, Collapsing code, Expanding code, Accessing Split code view, Previewing assets in Code View.

Total PHP training course description PHP provides for the creation of dynamic web sites. This hands on training course looks at programming with PHP with an emphasis of building dynamic websites. Forms, state management and database integration are all covered with practicals used throughout the course to reinforce theory sessions. What will you learn Create dynamic web sites using PHP. Write PHP programs. Debug PHP programs. Examine existing code and determine its function. Total PHP training course details Who will benefit: Anyone creating dynamic web sites. Prerequisites: Software development fundamentals Duration 3 days Total PHP training course contents What is PHP? PHP history, dynamic web pages, how PHP works, alternatives to PHP. Downloading and installing PHP. Installing MySQL, installing Apache, platform issues. A first PHP web page A basic PHP script, PHP page structure. PHP comments. Integrating PHP and HTML. PHP forms HTML forms, taking values from forms. PHP and HTML Page inputs, environment inputs. phpinfo(), other form elements, sticky fields, generalised code, tables, forms, form elements, style sheets, JavaScript. Variables operators and expressions Expressions, data types, assignments, scope, constants, HTTP environment variables, getting data from forms using variables. Operators Arithmetic, logical, relational, Boolean, others. Control statements Conditional: if, else, elseif, switch. Loops: while, do while, for, break, continue, exit. Functions Built in functions, declaration, arguments, scope, loading functions from other files, defaulting parameters, call by value/ name. Arrays Indexes, array initialisation, array manipulation, multi dimensional arrays, array functions. String handling What is a string, string functions, matching, extraction, replacement. String operations, cleansing, sprintf, formatting web pages, strops and others, splitting strings, REs. PHP and databases Database structure, Database APIs, MySQL, Creating tables, Editing tables, simple SQL queries using PHP, building HTML tables using SQL queries, SQL injection, security issues, error handling. File I/O Opening, reading, writing files. Permissions, ownership, locking, directories. PHP, cookies and sessions State, Cookie properties, setting cookies, retrieving cookies, expiring/deleting cookies. Sessions, session variables, session IDs. PHP and email Emailing from servers, attachments. Objects OOP, PHP classes, constructors, instances.

Duration 2 Days 12 CPD hours This course is intended for This Introductory-level course is targeted for aspiring web developers who have software development experience or background. The course can also be adjusted for non-developers upon request. Overview This 'skills-focused' course is approximately 50% hands-on, combining expert lecture, real-world demonstrations and group discussions with machine-based practical labs and exercises. Our instructors are highly experienced practitioners who bring years of current 'on-the-job' experience into every classroom. Introduction to HTML5/ CSS3 and Responsive Design Basics is a hands-on basic web development course geared for developers who need to understand what the latest in web technologies and responsive design practices that are central to targeting the entire spectrum of user platforms and browsers. This comprehensive course provides a balanced mixture of theory and practical labs designed to take students through HTML5 and CSS3. Students who attend this course will leave this course armed with the new skills to design, implement, and deploy robust, flexible, and safe web applications. HTML Define HTML and review its history Look at XHTML and its relationship to HTML Identify HTML limitations and improvements HTML5 HTML5 Overview HTML5 Semantic Structure HTML5 Forms HTML5 Media Delivery CSS Learn the basics of CSS Meaning of cascading in CSS Declaring CSS within your HTML page Creating styles in an external CSS file Control how to display and position HTML elements Overriding standard tag behavior Adding new classes Using custom classes in your page CSS3 Overview What is new in CSS3 The Advantages of CSS3 Browser Support for CSS3 CSS3 Advanced Selectors Selecting Using Attributes Selecting Using DOM Structure Complex Selecting using Pseudo-Classes Selecting Using UI Components and State CSS3 Visual Effects Font Options, Opacity, and Color Distributing Content Across Columns Working with Borders and Boxes Working with Vendor Prefixes Functional Techniques HTML5 JavaScript API Cross-Domain Messaging Working with Web Storage Offline with Application Cache Geolocation: What, Why, and How Responsive Web Design (RWD) Adapting to Varying Screen Sizes Scaling Page and Text Content Scaling and Adapting for Media Options for Adjusting Media Additional course details: Nexus Humans Web Essentials | Introduction to HTML5, CSS3 and Responsive Design (TT4002) training program is a workshop that presents an invigorating mix of sessions, lessons, and masterclasses meticulously crafted to propel your learning expedition forward. This immersive bootcamp-style experience boasts interactive lectures, hands-on labs, and collaborative hackathons, all strategically designed to fortify fundamental concepts. Guided by seasoned coaches, each session offers priceless insights and practical skills crucial for honing your expertise. Whether you're stepping into the realm of professional skills or a seasoned professional, this comprehensive course ensures you're equipped with the knowledge and prowess necessary for success. While we feel this is the best course for the Web Essentials | Introduction to HTML5, CSS3 and Responsive Design (TT4002) course and one of our Top 10 we encourage you to read the course outline to make sure it is the right content for you. Additionally, private sessions, closed classes or dedicated events are available both live online and at our training centres in Dublin and London, as well as at your offices anywhere in the UK, Ireland or across EMEA.

Complete VB.Net training course description A hands on introduction to programming in Visual BASIC .Net. What will you learn Build Visual BASIC applications. Build simple components Debug Visual BASIC programs. Examine existing code and determine its function. Complete VB.Net training course details Who will benefit: Anyone wishing to program in Visual BASIC. Anyone wishing to build Windows based applications. Prerequisites: None although experience in another high level language would be useful. Duration 5 days Complete VB.Net training course contents Writing your first program Visual Studio, forms designer, running VB programs, the UI, properties, writing the code. Toolbox Controls Basic use, input controls, ActiveX controls. Menus and Dialog Boxes Menus, Dialog Box controls, event procedures. Visual Basic .NET variables and operators Variables, I/O, data types, constants, operators, Math Methods, precedence. Decision Structures and Loops and Timers Event-Driven programming, If…Then, Select Case, For…Next Loops, Timer Control. Debugging Visual Basic .NET Programs Break Mode, watch & command windows. Structured Error Handling Try...Catch, Finally, Err Object, retry periods. Modules and Procedures Standard modules, public variables, procedures. Arrays and Collections to Manage Data Fixed-Size & dynamic Arrays, ReDim Preserve, object collections, Controls Collection. Text Files and String Processing Text Box object, Text String methods, sorting. Automating Office Applications Application objects, automation in VB, the Object Browser, the Process Component. Deploying Visual Basic .NET Applications Planning a deployment, ways to deploy an application, deployment projects, options. Managing Windows Forms Forms, positioning, manipulation, adding controls, organizing controls, Startup Object. Adding Graphics and Animation Effects System.Drawing namespace, coordinates, SystemPaint Event, animation, transparency. Inheriting Forms and Creating Base Classes Inheriting forms, inheritance picker, base classes and inheritance, classes in projects. Working with Printers PrintDocument class, Text Box object, Print Preview and Page Setup Dialog Boxes. Database programming with ADO.NET Databases, ADO.NET, Data Adapters, Datasets, Bound & Navigation Controls. Displaying database records, formatting DataGrid cells, updating the database. Displaying HTML Documents Using IE IE Object, Internet Controls, IE Events. Web Forms for Interactive Web Applications ASP.NET, Web Forms vs. Windows Forms, HTML controls, web applications, event procedures for web forms controls.

Complete JavaScript training course description A hands on course covering JavaScript programming. Core JavaScript is covered first, including the basics, arrays, functions, classes, modules and Regular expressions. Client side JavaScript is then covered including JavaScript in browsers, Scripting CSS, the jQuery library and HTML APIs. What will you learn Read JavaScript. Write JavaScript. Debug JavaScript. Complete JavaScript training course details Who will benefit: Anyone wishing to learn JavaScript. Prerequisites: None. Duration 3 days Complete JavaScript training course contents CORE JAVASCRIPT Lexical structure: Character set, comments, literals, identifiers, and reserved words, optional semicolons.. Types, values and variables: Numbers, text, boolean values, null and undefines, the global object, wrapper objects, immutable primitive values and mutable object references, type conversions, variable declaration, variable scope. Expressions and operators: Primary expressions, object and array initializers, function definition expressions, property access expressions, invocation expressions, object creation expressions, operator overview, arithmetic expressions, relational expressions, logical expressions, assignment expressions, evaluation expressions, miscellaneous operators. Statements: Expression statements, compound and empty statements, declaration statements, conditionals, loops, jumps, miscellaneous statements, summary of JavaScript statements. Objects: Creating objects, querying and setting properties, deleting properties, testing properties, enumerating properties, property getters and setters, property attributes, object attributes, serializing objects, object methods. Arrays: Creating arrays, reading and writing array elements, sparse arrays, array length, adding and deleting array elements, iterating arrays, multi-dimensional arrays, array methods, FCMAScript 5 array methods, array type, array-like objects, strings as arrays. Functions: Defining functions, invoking functions, function arguments and parameters, functions as values, functions as namespaces, closures, function properties, methods and constructor, functional programming. Classes and modules: Classes and prototypes, classes and constructors, Java-style classes in JavaScript, augmenting classes, classes and types, object oriented techniques in JavaScript, subclasses, classes in ECMAScript 5, modules. Pattern matching and regular expressions: Defining regular expressions, string methods for pattern matching, the RegExp object. JavaScript subsets and extensions: JavaScript subsets, constants and scoped variables, destructuring assignment, iteration, shorthand functions, multiple catch clauses, E4X: ECMAScript for XML. Server-side JavaScript: Scripting Java with Rhino, asynchronous I/O with node. CLIENT SIDE JAVASCRIPT JavaScript in web browsers: Client side JavaScript, embedding JavaScript in HTML, execution of JavaScript programs, compatibility and interoperability, accessibility, security, client side frameworks. The Window object: Timers, browser location and navigation, browsing history, browser screen information, dialog boxes, error handling, document elements as window properties, multiple windows and frames. Scripting Documents: Overview of the DOM, selecting document elements, document structure and traversal, attributes, element content, creating, inserting and deleting nodes. Example: generating a table of contents, document and element geometry and scrolling, HTML forms, other document features. Scripting CSS: Overview of CSS, important CSS properties, scripting inline styles, querying computed styles, scripting CSS classes, scripting stylesheets. Handling events: Types of events, registering event handlers, event handler invocation, document load events, mouse events, mousewheel events, drag and drop events, text events, keyboard events. Scripted HTTP: Using XMLHttpRequest, HTTP by <script>: JSOMP, Comet with server-sent events. The jQuery library: jQuery basics, jQuery getters and setters, altering document structure, handling events with jQuery, Animated effects, Ajax with jQuery, Utility functions, jQuery selectors and selection methods, Extending jQuery with plug-ins. The jQuery UI library. Client side storage: localStorage and sessionStorage, Cookies, IE usingData persistence, Applicatioin storage and offline webapps. Scripted media and graphics: Scripting images, Scripting audio and video, SCG:scalable vector graphics, Graphics in a <canvas>. Scripted HTTP: Using XMLHttpRequest, HTTP by <script>: JSOMP, Comet with server-sent events. The jQuery library: jQuery basics, jQuery getters and setters, altering document structure, handling events with jQuery, Animated effects, Ajax with jQuery, Utility functions, jQuery selectors and selection methods, Extending jQuery with plug-ins. The jQuery UI library. Client side storage: localStorage and sessionStorage, Cookies, IE usingData persistence, Applicatioin storage and offline webapps. Scripted media and graphics: Scripting images, Scripting audio and video, SCG:scalable vector graphics, Graphics in a <canvas>. HTMLS APIs: Geolocation, history management, cross-origin messaging, web workers, type arrays and ArrayBuffers, blobs, the filesystem API, client side databases, web sockets.

Regular expressions training course description Regular expressions are an extremely powerful tool for manipulating text and data. They are now standard features in a wide range of languages and popular tools, including Python and MySQL. Regular expressions allow you to code complex and subtle text processing that you never imagined could be automated. Once you've mastered regular expressions, they'll become an invaluable part of your toolkit. You will wonder how you ever got by without them. What will you learn Use Regular Expressions. Troubleshoot Regular Expressions. Compare RE features among different versions. Explain how the regular expression engine works. Optimize REs. Match what you want, not what you don't want. Regular expressions training course details Who will benefit: Anyone looking to use regular expressions. Prerequisites: None. Duration 1 day Regular expressions training course contents Introduction to Regular Expressions Solving real problems, REs as a language, the filename analogy, language analogy, RE frame of mind, searching text files: egrep, egrep metacharacters, start and end of the line, character classes, matching any character with dot, alternation, ignoring differences in capitalization, word boundaries, optional items, other quantifiers: repetition, parentheses and backreferences, the great escape, expanding the foundation, linguistic diversification, the goal of a RE, more examples, RE nomenclature, Improving on the status quo. Extended introductory examples A short introduction to Perl, matching text with regular expressions, toward a more real-world example, side effects of a successful match, Intertwined regular expression, intermission, modifying text with regular expressions, example: form letter, example: prettifying a stock price, automated editing, a small mail utility, adding commas to a number with lookaround, text-to-HTML conversion, that doubled-word thing. Regular expression features and flavours The regex landscape, origins of REs, care and handling of REs, Integrated handling, procedural and object-oriented handling, search-and-replace example. strings character encodings and modes, strings as REs, character-encoding issues, unicode, regex modes and match modes, common metacharacters and features, character representations, character classes and class-like constructs, anchors and other 'zero-width assertions', comments and mode modifiers, grouping capturing conditionals and control. The mechanics of expression processing Two kinds of engines, new standards, regex engine types, from the department of redundancy department, testing the engine type, match basics, about the examples, rule 1: the match that begins earliest wins, engine pieces and parts, rule 2: the standard quantifiers are greedy, regex-directed versus text-directed, NFA engine: regex-directed, DFA engine: text-directed, first thoughts: NFA and DFA in comparison, backtracking, two important points on backtracking, saved states, backtracking and greediness, more about greediness and backtracking, problems of greediness, multi-character 'quotes', lazy quantifiers, greediness and laziness, laziness and backtracking, possessive quantifiers and atomic grouping, possessive quantifiers ?, +, *+, ++ and {m,n}+, the backtracking of lookaround, is alternation greedy? taking advantage of ordered alternation, NFA DFA and posix, the longest-leftmost', posix and the longest-leftmost rule, speed and efficiency. Practical regex techniques Continuation lines, matching an IP address, working with filenames, matching balanced sets of parentheses, watching out for unwanted matches, matching delimited text, knowing your data and making assumptions, stripping leading and trailing whitespace, matching and HTML tag, matching an HTML link, examining an HTTP URL, validating a hostname, plucking a hostname, plucking a URL, parsing CSV files. Crafting an efficient expression Efficiency vs. correctness, localizing greediness, global view of backtracking, more work for POSIX NFA, work required during a non-match, being more specific, alternation can be expensive, benchmarking, know what you re measuring, benchmarking with Python, common optimisations, the mechanics of regex application, pre-application optimizations, optimizations with the transmission, optimization of the regex itself, techniques for faster expressions, common sense techniques, expose literal text, expose anchors, lazy versus greedy: be specific, split into multiple REs, mimic initial-character discrimination, use atomic grouping and possessive quantifiers, lead the engine to a match, unrolling the loop, observations, using atomic grouping and possessive quantifiers, short unrolling examples, unrolling C comments, the free flowing regex, a helping hand to guide the match, a well-guided regex is a fast regex.

Duration 5 Days 30 CPD hours This course is intended for This course is intended for professional web developers who use Microsoft Visual Studio in an individual-based or team-based, small-sized to large development environment. Candidates for this course are interested in developing advanced web applications and want to manage the rendered HTML comprehensively. They want to create websites that separate the user interface, data access, and application logic. Overview Describe the Microsoft Web Technologies stack and select an appropriate technology to use to develop any given application. Design the architecture and implementation of a web application that will meet a set of functional requirements, user interface requirements, and address business models. Configure the pipeline of ASP.NET Core web applications using middleware, and leverage dependency injection across applications. Develop a web application that uses the ASP.NET Core routing engine to present friendly URLs and a logical navigation hierarchy to users. Create Views in an application that display and edit data and interact with Models and Controllers. Connect an ASP.NET Core application to a database using Entity Framework Core. Implement a consistent look and feel across an entire web application. Write JavaScript code that runs on the client-side and utilizes the jQuery script library to optimize the responsiveness of an web application. Add client side packages and configure Task Runners. Run unit tests and debugging tools against a web application in Visual Studio 2022. Write an application that authenticates and authorizes users to access content securely using Identity. Build an application that resists malicious attacks. Use caching to accelerate responses to user requests. Use SignalR to enable two-way communication between client and server. Describe what a Web API is and why developers might add a Web API to an application. Describe how to package and deploy an ASP.NET Core web application from a development computer to a web server. In this 5-day course, professional web developers will learn to develop advanced ASP.NET Core applications using .NET tools and technologies. The focus will be on coding activities that enhance the performance and scalability of the Web site application. Module 1: Exploring ASP.NET Core Introducing of Microsoft Web Technologies Getting Started with Razor Pages in ASP.NET Core Introducing ASP.NET Core MVC Module 2: Designing ASP.NET Core MVC Web Applications Planning in the Project Design Phase Designing Models, Controllers and Views Module 3: Configure Middleware and Services in ASP.NET Core Configuring Middlewares Configuring Services Module 4: Developing Controllers Writing Controllers and Actions Configuring Routes Writing Action Filters Module 5: Developing Views Creating Views with Razor Syntax Using HTML Helpers and Tag Helpers Reusing Code in Views Module 6: Developing Models Creating MVC Models Working with Forms Validating User Input Module 7: Using Entity Framework Core in ASP.NET Core Introduction to Entity Framework Core Working with Entity Framework Core Use Entity Framework Core to connect to Microsoft SQL Server Module 8: Using Layouts, CSS and JavaScript in ASP.NET Core Using Layouts Using CSS and JavaScript Using JavaScript Libraries Module 9: Client-Side Development Applying Styles and Responsive Design Using Task Runners Looking at ASP.NET Core Blazor Module 10: Testing and Troubleshooting Testing ASP.NET Core Applications Implementing an Exception Handling Strategy Logging ASP.NET Core Applications Module 11: Managing Security Authentication in ASP.NET Core Authorization in ASP.NET Core Defending from Common Attack Module 12: Performance and Communication Implementing a Caching Strategy Managing State Supporting Two-way Communication Module 13: Implementing Web APIs Introducing Web APIs Developing a Web API Calling a Web API Module 14: Hosting and Deployment Hosting and Deploying On-premises Deploying to Microsoft Azure Looking at Microsoft Azure Fundamentals

This one-day course introduces the field of user experience and provides an excellent entry point to our other specialised training courses. UX processes and practices have become a central component of product design, service design and web design.

Java training course description A comprehensive introduction of the Java language and environment. It is important to note that the course will assume that the delegates are already familiar with the C language as this enables more advanced features of the Java language to be covered in the course. The course will also give an overview of areas related to programming in Java. What will you learn Describe the Java architecture. Write Java applets and applications. Debug Java programs. Examine existing code and determine its function. Use multimedia extensions, the awt, multithreading, exceptions within Java Java training course details Who will benefit: Those wishing to program in Java. Prerequisites: Complete C programming Duration 5 days Java training course contents Review of UNIX fundamentals What is Java? What Java is, history of Java, reasons for success. The Java Virtual Machine, Bytecodes, getting up and running with Java, Java resources. Simple Java applications. C features in Java Java data structures, Java flow control, differences from C, arrays, strings and packages. OO features in Java Java classes and objects, inheritance, overloading, packages. Differences from C++. Java applets Applications vs. applets, HTML, the applet tag, applet methods, life cycle, testing and debugging. Multimedia applets Images, sounds, fonts, colours and animation. Java products The JDK in detail, other development environments. Javabeans and JDBC overviews. Abstract Window Toolkit JFC and Swing versus AWT. Event handling (JDK 1.1), GUIs, panels, buttons, lists, scrollbars, text areas, frames… Exception handling and multithreading Handling exceptions. Starting, pausing, stopping threads, producers, consumers, monitoring. More standard classes Java file I/O, Streams, The system class. The networking model, java.net classes. Security and Java Types of attack, the security manager, craplets, securing the network. Integrating legacy code with Java

ASP.Net training course description Our hands on ASP.NET training course that will teach students how to create a simple ASP.NET application that delivers dynamic content to the web. The course is applicable for those using C# or VB.NET with ASP.NET. What will you learn Create a web form with server controls Separate page code from content with code-behind pages, page controls, and components. Display dynamic data from a data source by using ADO.NET and data binding. Debug ASP.NET pages by using trace. ASP.Net training course details Who will benefit: Programmers working with ASP.NET. Prerequisites: HTML5 development fundamentals VBNet_course.htm or C++ programming foundation Duration 3 days ASP.Net training course contents Working with ASP.NET Introducing ASP.NET. Creating web forms. Adding ASP.NET code to a page. Handling page events. Using Web Controls Web controls and HTML controls compared. Using intrinsic controls. Using input validation controls. Introduction to user controls. Using trace in ASP.NET pages Overview of tracing. Trace information. Page-level trace and application-level trace. Separating code from content Advantages of partitioning an ASP.NET page. Creating and using code-behind pages. Creating and using components and classes. Inheritance of classes. Interfaces. Using ADO .NET to access data Accessing text files. Overview of ADO .NET Connecting to a data source. Accessing data with DateSets. Using DataViews. Accessing data with DataReaders. Using XML data with a DataSet. Creating an ASP.NET Web Application Requirements of a web application. Sharing information between pages. Securing an ASP.NET application. Web services. Creating a simple web service using Visual Studio.NET Calling a web service using Visual Studio.NET