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DataBindingHandler Class

Provides a base class for a data-binding handler.

For a list of all members of this type, see DataBindingHandler Members.

System.Object
   System.Web.UI.Design.DataBindingHandler
      System.Web.UI.Design.CalendarDataBindingHandler
      System.Web.UI.Design.HyperLinkDataBindingHandler
      System.Web.UI.Design.TextDataBindingHandler
      System.Web.UI.Design.WebControls.ListControlDataBindingHandler

[Visual Basic]
MustInherit Public Class DataBindingHandler
[C#]
public abstract class DataBindingHandler
[C++]
public __gc __abstract class DataBindingHandler
[JScript]
public abstract class DataBindingHandler

Thread Safety

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Remarks

DataBindingHandler provides a base class for data-binding handlers. A data-binding handler can be used within a designer to perform data-binding to enable a meaningful display of the control on the design surface. Typically a control's designer is responsible for this functionality. However, when a control is not live on the design surface, such as within the template of another control, it does not have a designer, and this functionality is provided by a data-binding handler if one has been specified with a DataBindingHandlerAttribute in the code for the control.

To use a data-binding handler, the control which has the data-bound property or properties must have a DataBindingHandlerAttribute specified within its code that indicates the type of data-binding handler to use.

For example, the Label control is associated with the TextDataBindingHandler class through a DataBindingHandlerAttribute in the code for the Label class. Within a template for a DataList, a Label control whose text property has been data bound displays the word "DataBound" on the label. Without the data-binding handler, the label would be invisible at design-time, as it does not have a designer to bind its data-bound properties while in a templated control at design-time.

To implement a data-binding handler, define a new class that derives from this class and implement the DataBindControl method to set the appropriate properties.

Requirements

Namespace: System.Web.UI.Design

Platforms: Windows 2000, Windows XP Professional, Windows Server 2003 family

Assembly: System.Design (in System.Design.dll)

See Also

DataBindingHandler Members | System.Web.UI.Design Namespace | DataBindingHandlerAttribute

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