Export (0) Print
Expand All

DataBindingHandlerAttribute Class

Specifies a design-time class that performs data binding of controls within a designer. This class cannot be inherited.

System.Object
  System.Attribute
    System.Web.UI.DataBindingHandlerAttribute

Namespace:  System.Web.UI
Assembly:  System.Web (in System.Web.dll)

[AttributeUsageAttribute(AttributeTargets.Class)]
public sealed class DataBindingHandlerAttribute : Attribute

The DataBindingHandlerAttribute type exposes the following members.

  NameDescription
Public methodDataBindingHandlerAttribute()Initializes a new instance of the DataBindingHandlerAttribute class using no parameters. This is the default constructor.
Public methodDataBindingHandlerAttribute(String)Initializes a new instance of the DataBindingHandlerAttribute class with the specified type name.
Public methodDataBindingHandlerAttribute(Type)Initializes a new instance of the DataBindingHandlerAttribute class of the specified Type.
Top

  NameDescription
Public propertyHandlerTypeNameGets the type name of the data-binding handler.
Public propertyTypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
Top

  NameDescription
Public methodEqualsInfrastructure. Determines whether two object instances are equal. (Overrides Attribute.Equals(Object).)
Public methodGetHashCodeInfrastructure. Returns the hash code for this instance. (Overrides Attribute.GetHashCode().)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodIsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
Top

  NameDescription
Public fieldStatic memberDefaultDefines the default attribute for the DataBindingHandlerAttribute class.
Top

  NameDescription
Explicit interface implemetationPrivate method_Attribute.GetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.GetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetationPrivate method_Attribute.InvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
Top

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.";
    }
  }

}

.NET Framework

Supported in: 4.5.3, 4, 3.5, 3.0, 2.0, 1.1, 1.0

Windows 8.1, Windows Server 2012 R2, 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.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Show:
© 2014 Microsoft