PredicateFilter Class
Represents a IDataFilter implementation that uses a predicate to execute custom filter logic.
public class PredicateFilter : DataFilterBase, IDataFilter
- Inheritance:
- System.Object System.Windows.Threading.DispatcherObject System.Windows.DependencyObject DataFilterBase Object
- Implements:
- IDataFilter
Constructors
PredicateFilter()
Initializes an instance of the PredicateFilter class.
public PredicateFilter()
PredicateFilter(Predicate<Object>)
Initializes an instance of the PredicateFilter class.
public PredicateFilter(Predicate<object> predicate)
Parameter | Type | Description |
---|---|---|
predicate | System.Predicate<System.Object> | The predicate to use for this filter. |
Properties
Predicate
Gets or sets the predicate to use for this filter.
public Predicate<object> Predicate { get; set; }
Property Value
- System.Predicate<System.Object>:
The predicate to use for this filter. The default value is
null
.
Methods
Filter(Object, Object)
Examines the specified item to see if meets filter conditions.
public override DataFilterResult Filter(object item, object context)
Parameter | Type | Description |
---|---|---|
item | System.Object | The item to examine. |
context | System.Object | An optional object that provides contextual information for the filter request. |
Returns
- DataFilterResult:
A DataFilterResult that indicates the filter result.
Fields
PredicateProperty
Identifies the Predicate dependency property. This field is read-only.
public static readonly DependencyProperty PredicateProperty
Inherited Members
- DataFilterBase.IncludedFilterResultProperty
- DataFilterBase.IsEnabledProperty
- DataFilterBase.RaiseFilterChangedEvent()
- DataFilterBase.FallbackFilterResult
- DataFilterBase.IncludedFilterResult
- DataFilterBase.IsEnabled
- DataFilterBase.FilterChanged
- System.Object.ToString()
- System.Object.Equals(System.Object)
- System.Object.Equals(System.Object, System.Object)
- System.Object.ReferenceEquals(System.Object, System.Object)
- System.Object.GetHashCode()
- System.Object.GetType()
- System.Object.MemberwiseClone()