DataBindingHandlerAttribute Class
Specifies a design-time class that performs data binding of controls within a designer. This class cannot be inherited.
Namespace: System.Web.UI
Assembly: System.Web (in System.Web.dll)
The DataBindingHandlerAttribute type exposes the following members.
| Name | Description | |
|---|---|---|
 | DataBindingHandlerAttribute() | Initializes a new instance of the DataBindingHandlerAttribute class using no parameters. This is the default constructor. |
| DataBindingHandlerAttribute(String) | Initializes a new instance of the DataBindingHandlerAttribute class with the specified type name. |
| DataBindingHandlerAttribute(Type) | Initializes a new instance of the DataBindingHandlerAttribute class of the specified Type. |
| Name | Description | |
|---|---|---|
| HandlerTypeName | Gets the type name of the data-binding handler. |
| TypeId | When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.) |
| Name | Description | |
|---|---|---|
| Equals | Infrastructure. Determines whether two object instances are equal. (Overrides Attribute.Equals(Object).) |
| GetHashCode | Infrastructure. Returns the hash code for this instance. (Overrides Attribute.GetHashCode().) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| IsDefaultAttribute | When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.) |
| Match | When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Name | Description | |
|---|---|---|
| _Attribute.GetIDsOfNames | Maps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.) |
| _Attribute.GetTypeInfo | Retrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.) |
| _Attribute.GetTypeInfoCount | Retrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.) |
| _Attribute.Invoke | Provides access to properties and methods exposed by an object. (Inherited from Attribute.) |
For more information about using attributes, see Extending Metadata Using Attributes.
The following code example defines a data-binding handler, named MyDataBindingHandler, to be used by the designer in editing mode. On exiting the editing mode, the Text property value is displayed.
using System; using System.Collections; using System.Web.UI; using System.Web.UI.Design; using System.Web.UI.WebControls; using System.ComponentModel; using System.ComponentModel.Design; namespace CustomControls { [ DataBindingHandler(typeof(MyDataBindingHandler)), ToolboxData("<{0}:MyLabel runat=server></{0}:MyLabel>") ] public class MyLabel : Label { public MyLabel() { // Insert your code here. } } public class MyDataBindingHandler : DataBindingHandler { public override void DataBindControl(IDesignerHost host, Control control) { ((Label)control).Text = "Added by data binding handler."; } } }
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
