FilterDescriptor.Operator Property

[WCF RIA Services Version 1 Service Pack 2 is compatible with either .NET framework 4 or .NET Framework 4.5, and with either Silverlight 4 or Silverlight 5.]

Gets or sets the filter operator.

Namespace:  System.Windows.Controls
Assembly:  System.Windows.Controls.DomainServices (in System.Windows.Controls.DomainServices.dll)

Syntax

'Declaration
Public Property Operator As FilterOperator
    Get
    Set

'Usage
Dim instance As FilterDescriptor
Dim value As FilterOperator

value = instance.Operator

instance.Operator = value

public FilterOperator Operator { get; set; }

public:
property FilterOperator Operator {
    FilterOperator get ();
    void set (FilterOperator value);
}

member Operator : FilterOperator with get, set

function get Operator () : FilterOperator
function set Operator (value : FilterOperator)

Property Value

Type: System.Windows.Controls.FilterOperator
The filter operator.

Remarks

The specified filter operator must be compatible with the type used for filtering.

Examples

The following example shows two filter descriptors that are connected by a logical AND statement. One filter depends on user input and one filter is specified in the declarative syntax.

<Grid x:Name="LayoutRoot" Background="White">  
    <Grid.RowDefinitions>
        <RowDefinition Height="25" />
        <RowDefinition Height="Auto" />
    </Grid.RowDefinitions>
    <riaControls:DomainDataSource x:Name="source" QueryName="GetProducts" AutoLoad="true">
        <riaControls:DomainDataSource.DomainContext>
            <domain:ProductDomainContext />
        </riaControls:DomainDataSource.DomainContext>   
        <riaControls:DomainDataSource.FilterDescriptors>
            <riaData:FilterDescriptorCollection LogicalOperator="And">
              <riaData:FilterDescriptor PropertyPath="Color" Operator="IsEqualTo" Value="Blue" />
              <riaData:FilterDescriptor PropertyPath="ListPrice" Operator="IsLessThanOrEqualTo">
                  <riaControls:ControlParameter 
                      ControlName="MaxPrice" 
                      PropertyName="SelectedItem.Content" 
                      RefreshEventName="SelectionChanged" />
              </riaData:FilterDescriptor>
            </riaData:FilterDescriptorCollection>
        </riaControls:DomainDataSource.FilterDescriptors>
    </riaControls:DomainDataSource>
    <ComboBox x:Name="MaxPrice" Grid.Row="0" Width="60" SelectedIndex="0">
        <ComboBoxItem Content="100" />
        <ComboBoxItem Content="500" />
        <ComboBoxItem Content="1000" />
    </ComboBox>
    <data:DataGrid Grid.Row="1" ItemsSource="{Binding Data, ElementName=source}" />
</Grid>

See Also

Reference

FilterDescriptor Class

System.Windows.Controls Namespace