UI data binding is a

software design pattern In software engineering, a software design pattern is a general, reusable solution to a commonly occurring problem within a given context in software design. It is not a finished design that can be transformed directly into source or machine code ...

to simplify development of

GUI The GUI ( "UI" by itself is still usually pronounced . or ), graphical user interface, is a form of user interface that allows users to interact with electronic devices through graphical icons and audio indicator such as primary notation, inste ...

applications. UI

data binding In computer programming, data binding is a general technique that binds data sources from the provider and consumer together and synchronizes them. This is usually done with two data/information sources with different languages, as in XML data bin ...

binds UI elements to an application

domain model In software engineering, a domain model is a conceptual model of the domain that incorporates both behavior and data.Fowler, Martin. ''Patterns of Enterprise Application Architecture''. Addison Wesley, 2003, p. 116. In ontology engineering, a do ...

. Most frameworks employ the

Observer pattern In software design and engineering, the observer pattern is a software design pattern in which an object, named the subject, maintains a list of its dependents, called observers, and notifies them automatically of any state changes, usually by ca ...

as the underlying binding mechanism. To work efficiently, UI data binding has to address input validation and data type mapping. A ''bound control'' is a widget whose value is tied or

bound Bound or bounds may refer to: Mathematics * Bound variable * Upper and lower bounds, observed limits of mathematical functions Physics * Bound state, a particle that has a tendency to remain localized in one or more regions of space Geography *B ...

to a field in a recordset (e.g., a

column A column or pillar in architecture and structural engineering is a structural element that transmits, through compression, the weight of the structure above to other structural elements below. In other words, a column is a compression member. ...

in a

row Row or ROW may refer to: Exercise *Rowing, or a form of aquatic movement using oars *Row (weight-lifting), a form of weight-lifting exercise Math *Row vector, a 1 × ''n'' matrix in linear algebra. *Row (database), a single, implicitly structured ...

of a

table Table may refer to: * Table (furniture), a piece of furniture with a flat surface and one or more legs * Table (landform), a flat area of land * Table (information), a data arrangement with rows and columns * Table (database), how the table data ...

). Changes made to data within the control are automatically saved to the database when the control's exit event triggers.

Example

public class ExampleViewModel

Data binding frameworks and tools

Delphi Delphi (; ), in legend previously called Pytho (Πυθώ), in ancient times was a sacred precinct that served as the seat of Pythia, the major oracle who was consulted about important decisions throughout the ancient classical world. The oracle ...

* DSharp third-party data binding tool * OpenWire Visual Live Binding - third-party visual data binding tool

Java

JFace JFace is defined by the Eclipse project as "a UI toolkit that provides helper classes for developing UI features that can be tedious to implement." The Standard Widget Toolkit (SWT) is an open source widget toolkit for Java designed to provid ...

Data Binding *

JavaFX JavaFX is a software platform for creating and delivering desktop applications, as well as rich web applications that can run across a wide variety of devices. JavaFX has support for desktop computers and web browsers on Microsoft Windows, Linu ...

Property

.NET

Windows Forms Windows Forms (WinForms) is a free and open-source graphical (GUI) class library included as a part of Microsoft .NET, .NET Framework or Mono Framework, providing a platform to write client applications for desktop, laptop, and tablet PCs. While ...

data binding overview * WPF data binding overview * Unity 3D data binding framework (available in modifications for NGUI, iGUI and EZGUI libraries)

JavaScript

* Angular *

AngularJS AngularJS is a discontinued free and open-source JavaScript-based web framework for developing single-page applications. It was maintained mainly by Google and a community of individuals and corporations. It aimed to simplify both the development ...

Backbone.js Backbone.js is a JavaScript rich-client web app framework based on the model–view–controller design paradigm, intended to connect to an API over a RESTful JSON interface. Backbone is known for being lightweight, as its only hard dependency i ...

* Ember.js * Datum.js *

knockout.js Knockout is a standalone JavaScript implementation of the Model–View–ViewModel Model–view–viewmodel (MVVM) is an architectural pattern in computer software that facilitates the separation of the development of the graphical user int ...

Meteor A meteoroid () is a small rocky or metallic body in outer space. Meteoroids are defined as objects significantly smaller than asteroids, ranging in size from grains to objects up to a meter wide. Objects smaller than this are classified as micr ...

, via its ''Blaze'' live update engine *

OpenUI5 OpenUI5 is a JavaScript application framework designed to build cross-platform, responsive, enterprise-ready applications. It is an open-source project maintained by SAP SE available under the Apache 2.0 license and open to contributions. OpenUI ...

React REACT or React may refer to: Science and technology *REACT (telescope), a telescope at Fenton Hill Observatory, New Mexico, US Computing * React (JavaScript library) , a JavaScript library for building user interfaces, from Facebook ** React Nati ...

Vue.js Vue.js (commonly referred to as Vue; pronounced "view") is an open-source model–view–viewmodel front end JavaScript framework for building user interfaces and single-page applications. It was created by Evan You, and is maintained by him ...

References

Data management Software design patterns {{database-stub