introduction to oo in net

... class Inheritance is a powerful tool for code reuse It is demonstrated in detail later in this book 22 Chapter Introduction to OO in NET Polymorphism can also be implemented using an interface In ... myTimer2 = myTimer myTimer2.Interval = 500 Debug.WriteLine(myTimer.Interval) Debug.WriteLine(myTimer2.Interval) ' Displays 500 ' Displays 500 INTRODUCTION TO OO IN NET In NET, an integer and other primitive ... information on implementing an interface INTRODUCTION TO OO IN NET When talking about OO, the term “interface” has nothing to with your user interface An interface defines a list of properties and...

Ngày tải lên: 01/06/2014, 01:21

... Chapter 1: Windows Forms and the User Interface  Lesson 1: Adding and configuring Windows Forms     Adding Forms to the project Properties of Windows Forms Creating non-rectangular Windows Forms ... Configuring Controls in Windows Forms Slide 18 Document Outline Window  Document Outline Window (p.57)    Displays all of the controls and container controls in a form View\Other Windows\Document ... Outline Use for    Move controls from one container to another To delete controls from the form To add a control to a container (copy/paste) Chapter - Lesson 1: Configuring Controls in Windows...

Ngày tải lên: 15/03/2014, 02:20

... are working on a new topic or seeking pointers to the literature Instructors may choose to assign the full text in the order that we present it or to make selections from it The opening chapter ... pointing devices, data formats, and so on Some user-interface building tools help by generating code for Macintosh, Windows, Unix, and other environments, so that the interfaces are similar in ... desire to improve the user experience (Figs 1.1 to 1.3 show some popular operating systems) In business settings, better decision-support and desktop-publishing tools support entrepreneurs, while in...

Ngày tải lên: 17/03/2014, 22:20

... way to create a visually appealing custom theme that matches the UI widgets to your existing site, and is the recommended method of creating custom skins [ 15 ] Introducing jQuery UI Installing ... compatibility Adding draggables Sortable page widgets The underlying page Styling the page The main script Building the content boxes Writing the cookie Making the boxes sortable Closing and restoring boxes ... valuable user interface tool for collecting input from your visitors We look closely at its API throughout this chapter to see the variety of ways that in which it can be implemented In Chapter...

Ngày tải lên: 28/04/2014, 15:43

... opening a new form, printing a report…  Crate Button by using wizard: − In the ribbon’s Form Design Tools Design  Controls section, click the Button − Draw the button into form Command Buttons ... the submenu for this heading, drag a form from the navigation pane into the submenu Linking to Related Data  Showing Linked Records in Separate Forms: By adding a button to form that pops open ... Choose Create ➝ Forms ➝ Form Using Forms  Finding and Editing a Record  Adding a Record  Deleting a Record  Printing Records  Sorting and Filtering in a Form − Quick filter − Filter by selection...

Ngày tải lên: 04/05/2014, 19:59

... false; – Add the following code to the Click event handler of the Exit button: The Validating Event and Sticky Form • Attach the following event handling code to the Validating events of both the ... control.) Validating (Occurs when a control is validating.) Validated (Occurs when a control is finished validating.) – LostFocus (Occurs when a control looses focus.) The Validating Event • Inside the ... User-defined method Maximum (p 195) public void DetermineMaximum() { Console.WriteLine( "Enter three floating-point values,\n" + " pressing 'Enter' after each one: " ); double number1 = Convert.ToDouble(...

Ngày tải lên: 13/05/2014, 11:39

... widgets to your existing site However, we won't be looking at this tool again for the remainder of this book We'll be focusing instead on learning the style rules that we need to manually override to ... (which we'll look at in detail in chapter 6) is very easy to internationalize using these plugin language packs Theme Roller Theme Roller is a custom tool written in jQuery that allows us to visually ... be looking at any code in this chapter There are just a few points that I would like to mention before we break out the text editors and get down to some coding In this chapter, we'll be looking...

Ngày tải lên: 27/06/2014, 12:20

... widget In addition to passing the string "add", and specifying a reference to the element we wish to add to the tabs, we also specify a label for the new tab Optionally, we can also specify the index ... We can also use the standard jQuery bind() method to bind an event handler to a custom event fired by the tabs widget in the same way that we could bind to a standard DOM event, such as a click ... from internally invoking any callback function specified in one of the properties listed above, custom events are also fired when different things occur The following table lists the tab's custom...

Ngày tải lên: 12/08/2014, 19:21

... also style the itself by using the following selector We need to this in order to move the up from the bottom edge of the widget slightly Add the following code to dialogTheme.css: ... even interactive content (like forms) It's also very easy to add buttons, such as simple ok and cancel buttons, to the dialog and define callback functions for them in order to react to their being ... a string or an array value The strings may be one of the following values: • bottom • center • left • right • top An array is used when you want to specify the exact coordinates of the top-left...

Ngày tải lên: 12/08/2014, 19:21

... then took a brief look at the built -in opening and closing effects that can be used with the dialog, before moving on to see the basic methods we can invoke in order to make the dialog things, ... engaging widget and you get dates in the format in which you expect them Additional functionality built into the date picker includes automatic opening and closing animations and the ability to ... formats will need to be 'escaped' using single quotes For example, to add the string Selected: to the start of the date, you would need to use the string Selecte'd': to avoid having the lowercase...

Ngày tải lên: 12/08/2014, 19:21

... rework the internationalized date picker example we looked at to make use of the change method instead of the beforeShow property In a new file in your text editing tool, create the following page: ... is attached to a standard text field and when a visitor begins typing in the text field, a menu drops down showing suggestions starting with the letters that have been typed in the field ... scrollHeight property to 300, we double the height of the default auto-complete menu, as shown in the following screenshot: [ 191 ] Auto-Complete Auto-complete styling The default styling of auto-complete...

Ngày tải lên: 12/08/2014, 19:21

... element into an auto-complete $("#suggest").autocomplete(autocompOpts); }); Save this file as autocomplete14.html Instead of using the data property to point to a local ... droppables API allows you to define a region of the page, or a container of some kind, for people to drop the draggables on to in order to make something else happen For example, to define a choice that ... objects • How to make an element return to its starting point once the drag ends • How to use event callbacks at different points in an interaction • The role of a drag helper • Containing draggables...

Ngày tải lên: 12/08/2014, 19:21

... Accepts an object specifying x and y coordinates to snap the resize to while resizing is taking place Defines which handles to use for resizing and uses an object specifying the handle names (n, ... reached the point where we can have a little fun by putting what we've learned about these two components into a fully working example In our final drag and drop example, we're going to combine both ... low-level interaction helpers by paying a visit to the resizable component We have already seen it in action when we looked at the dialog widget earlier in the book This time, we're going to focus...

Ngày tải lên: 12/08/2014, 19:21

... behaviour into a compact, easy -to- use class We first looked at the different theming options available when using resizable, and how easy it is to create our own theme by overriding the original styling ... example of how the web is increasingly becoming less distinct from the desktop as an application platform Topics that will be covered in this section include: • Creating the default implementation ... ui-unselecting The component also makes it very easy to add custom styling to show when elements are either in the process of being selected or have been selected Let's add some additional styling now to...

Ngày tải lên: 12/08/2014, 19:21

... turning the on-page elements into a simple string format that is easy to pass across the network to a waiting server-side application Let's see this in action In a new file in your text editor, ... method, or to appending to a URL, to pass the resulting string to a server for further processing The component uses a regular expression to read the ids of each sortable item and split them into the ... time for our final sortable example We're going to put the component to good use by creating a page with content boxes on it that can be sorted into various positions to suit the visitors personal...

Ngày tải lên: 12/08/2014, 19:21

... that instantly springs to mind is when creating custom tooltips We can easily create a tooltip that appears when an element is hovered over, but instead of just showing the tooltip after a specified ... Next Next Next Next Only one of these buttons will take you to the next page, choose wisely ... advanced easing options built right in so there is no need to include additional plugins We won't be looking at them in any real detail in this section, however, as we'll be using them in some of...

Ngày tải lên: 12/08/2014, 19:21

... requiring minimal human interaction User interfaces: I/O requiring human interaction User interface is everything end user comes into contact with while using the system To the user, the interface ... development guidelines Approaches to documenting dialog designs, including UML diagrams from OO approach 14 Identifying and Classifying Inputs and Outputs Identified by analyst when defining system ... system Included in event table as triggers and responses Actors provide inputs for many use cases Use cases provide outputs to actors 14 User versus System Interface System interfaces: I/O requiring...

Ngày tải lên: 24/10/2014, 15:36

... time are hard to find The usability engineer might instantly respond, filling in the users’ missing GUI design knowledge by suggesting segmenting the window’s contents into notebook pages This ... by direct manipulation (e.g., move a customer from one room to another by dragging the “Tom Dayton” icon from the “Room 101” window into the “Room 106” window); ... Kingdom Peter Nilsson Linn‚ Data Frolunda, Sweden Ingrid Ottersten Linn‚ Data Frolunda, Sweden Martin Rantzer Systems Engineering Lab Ericsson Radio Systems Link”ping Sweden Sabine Rohlfs IF Interface...

Ngày tải lên: 16/01/2014, 16:33

... Exercises to Identify Key User Attributes 153 Creating Business Requirements 160 Defining “Requirement” 161 Exercises to Develop Business Requirements 163 Maintaining Stakeholder Buy -in 169 Getting to ... with customer-facing products should avoid wasting their customers’ time, confusing them or insulting their intelligence, or pushing them away The linkage between acquiring and satisfying customers ... www.it-ebooks.info specialized in one of these domains, you won’t find yourself writing code, designing interfaces, or conducting user research, but understanding what to expect, what to avoid,...

Ngày tải lên: 08/03/2014, 22:20