Databind in asp.net
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This document provides an introduction to data binding in ASP.NET. It discusses two types of data binding: simple/inline data binding which binds data to control properties, and declarative data binding which binds data into control structures. Controls capable of simple binding inherit from ListControl while controls for declarative binding inherit from CompositeDataBoundControl. These include controls like DropDownList, GridView, and DetailsView. Declarative binding uses data sources, datasets, and data adapters to retrieve and manipulate data from a database.
Databind in asp.net
- 1. WELCOME TO
- 3. • Every ASP.NET web form control inherits the DataBind method from its parent Control class, which gives it an inherent capability to bind data to at least one of its properties. This is known as simple data binding or inline data binding. • Simple data binding involves attaching any collection (item collection) which implements the IEnumerable interface, or the DataSet and DataTable classes to the DataSource property of the control. • On the other hand, some controls can bind records, lists, or columns of data into their structure through a DataSource control. These controls derive from the BaseDataBoundControl class. This is called declarative data binding.
- 4. • The data source controls help the data-bound controls implement functionalities such as, sorting, paging, and editing data collections. • The BaseDataBoundControl is an abstract class, which is inherited by two more abstract classes: • DataBoundControl • HierarchicalDataBoundControl • The abstract class DataBoundControl is again inherited by two more abstract classes: • ListControl • CompositeDataBoundControl
- 5. • The controls capable of simple data binding are derived from the ListControl abstract class and these controls are: • BulletedList • CheckBoxList • DropDownList • ListBox • RadioButtonList • The controls capable of declarative data binding (a more complex data binding) are derived from the abstract class CompositeDataBoundControl. These controls are: • DetailsView • FormView • GridView • RecordList
- 6. • Declarative Data Binding • We have already used declarative data binding in the previous tutorial using GridView control. The other composite data bound controls capable of displaying and manipulating data in a tabular manner are the DetailsView, FormView, and RecordList control. • In the next tutorial, we will look into the technology for handling database, i.e, ADO.NET. • However, the data binding involves the following objects: • A dataset that stores the data retrieved from the database. • The data provider, which retrieves data from the database by using a command over a connection. • The data adapter that issues the select statement stored in the command object; it is also capable of update the data in a database by issuing Insert, Delete, and Update statements.
- 7. Relation between the data binding objects:
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