Specifies whether a member is typically used for binding. This class cannot be inherited.
Assembly: System (in System.dll)
Thetype exposes the following members.
|BindableAttribute(BindableSupport)||Initializes a new instance of the class with one of the BindableSupport values.|
|BindableAttribute(Boolean)||Initializes a new instance of the class with a Boolean value.|
|BindableAttribute(BindableSupport, BindingDirection)||Initializes a new instance of the class.|
|BindableAttribute(Boolean, BindingDirection)||Initializes a new instance of the class.|
|Bindable||Gets a value indicating that a property is typically used for binding.|
|Direction||Gets a value indicating the direction or directions of this property's data binding.|
|TypeId||When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)|
|Equals||Determines whether two objects are equal. (Overrides Attribute.Equals(Object).)|
|GetHashCode||Serves as a hash function for the class. (Overrides Attribute.GetHashCode.)|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|IsDefaultAttribute||Determines if this attribute is the default. (Overrides Attribute.IsDefaultAttribute.)|
|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.)|
|_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.)|
You can specify this attribute for multiple members, typically properties, on a control.
If a property has been marked with the set to true, then a property change notification should be raised for that property. This means that if the Bindable property is Yes, then two-way data binding is supported. If Bindable is No, you can still bind to the property, but it should not be shown in the default set of properties to bind to, because it might or might not raise a property change notification.
When you mark a property with BindableAttribute set to true, the value of this attribute is set to the constant member Yes. For a property marked with the BindableAttribute set to false, the value is No. Therefore, to check the value of this attribute in your code, you must specify the attribute as BindableAttribute.Yes or BindableAttribute.No.
You can use this attribute at design time only. Nothing prevents you from binding to any property during run time.
For more information, see Extending Metadata Using Attributes.
The following code example marks a property as appropriate to bind data to.
The next code example shows how to check the value of the for MyProperty. First, the code gets a PropertyDescriptorCollection with all the properties for the object. Next, the code indexes into the PropertyDescriptorCollection to get MyProperty. Finally, the code returns the attributes for this property and saves them in the attributes variable. The code example presents two different ways to check the value of the . In the second code fragment, the example calls the Equals method. In the last code fragment, the example uses the Bindable property to check the value.
' Gets the attributes for the property. Dim attributes As AttributeCollection = _ TypeDescriptor.GetProperties(Me)("MyProperty").Attributes ' Checks to see if the value of the BindableAttribute is Yes. If attributes(GetType(BindableAttribute)).Equals(BindableAttribute.Yes) Then ' Insert code here. End If ' This is another way to see whether the property is bindable. Dim myAttribute As BindableAttribute = _ CType(attributes(GetType(BindableAttribute)), BindableAttribute) If myAttribute.Bindable Then ' Insert code here. End If ' Yet another way to see whether the property is bindable. If attributes.Contains(BindableAttribute.Yes) Then ' Insert code here. End If
If you marked a class with the , use the following code example to check the value.
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.