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FilterableAttribute Class

Specifies whether the property to which the attribute is applied supports device filtering. This class cannot be inherited.

System.Object
  System.Attribute
    System.Web.UI.FilterableAttribute

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

[AttributeUsageAttribute(AttributeTargets.Class|AttributeTargets.Property)]
public sealed class FilterableAttribute : Attribute

The FilterableAttribute type exposes the following members.

  NameDescription
Public methodFilterableAttributeInitializes a new instance of the FilterableAttribute class.
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  NameDescription
Public propertyFilterableGets a value indicating whether the property to which the FilterableAttribute attribute is applied supports device filtering.
Public propertyTypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
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  NameDescription
Public methodEqualsInfrastructure. Determines whether the current instance of the FilterableAttribute class is equal to the specified object. (Overrides Attribute.Equals(Object).)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from 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 methodIsDefaultAttributeInfrastructure. Determines whether the current instance of the FilterableAttribute class is equal to the Default attribute. (Overrides Attribute.IsDefaultAttribute().)
Public methodStatic memberIsObjectFilterableDetermines whether the specified Object supports device filtering.
Public methodStatic memberIsPropertyFilterableDetermines whether a property supports device filtering.
Public methodStatic memberIsTypeFilterableDetermines whether the specified data type supports device filtering.
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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  NameDescription
Public fieldStatic memberDefaultRepresents a predefined FilterableAttribute object with default property settings. This field is read-only.
Public fieldStatic memberNoRepresents a predefined FilterableAttribute object that indicates that a property does not support device filtering. This field is read-only.
Public fieldStatic memberYesRepresents a predefined FilterableAttribute object that indicates that a property supports device filtering. This field is read-only.
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  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.)
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The FilterableAttribute attribute is applied to a property to specify whether the property supports device filtering. When a property supports device filtering, you can override the value of a property for a specific device by specifying a device filter. By default, properties are filterable, so a control developer could prevent device filtering on a property by setting the FilterableAttribute attribute to false. For more information, see Customizing ASP.NET Mobile Web Controls for Specific Devices.

For more information about using attributes, see Extending Metadata Using Attributes.

For a list of initial property values for an instance of the FilterableAttribute class, see the FilterableAttribute constructor.

The following code example demonstrates how to apply a FilterableAttribute attribute to a property of a custom control to indicate that the property does not support device filtering.



using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace Samples.AspNet.CS.Controls
{
    public class SimpleCustomControl : WebControl
    {
        private string _productID;

        // Set Filterable attribute to specify that this
        // property does not support device filtering.
        [Bindable(true)]
        [Filterable(false)]
        public string ProductID
        {
            get
            {
                return _productID;
            }
            set
            {
                _productID = value;
            }
        }
    }
}



.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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.

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