LogicalOperator プロパティ

コレクションで条件の結果を統合する方法を指定します。

シンタックス

Visual Basic

'宣言
 
Public Property LogicalOperator As LogicalOperator

C#

public LogicalOperator LogicalOperator {get; set;}

解説

LogicalOperator プロパティは、この条件グループ内の条件をブール値の機能 'or' または 'and' を使用して統合するかどうかを指定します。

使用例

The following code adds a RecordFilter for 'Percent' field. The record filter is populated with two conditions. The 'Conditions' property of the RecordFilter is of ConditionGroup type, which has a 'LogicalOperator' property that specifies whether to combine the conditions in the group using 'Or' or 'And' logical operation. The following code snippet sets the LogicalOperator to 'Or'.

Visual Basic

Imports Infragistics.Windows
Imports Infragistics.Windows.Controls
Imports Infragistics.Windows.Editors
Imports Infragistics.Windows.DataPresenter
Imports Infragistics.Windows.DataPresenter.Events

    Private Sub Window1_Loaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
        
        Dim fieldLayout As FieldLayout = _dp.FieldLayouts(0)

        ' Create a filter that shows 'Percent' field where the values are less than 0
        ' or greater than 100.
        Dim filter As RecordFilter = New RecordFilter()
        filter.FieldName = "Percent"
        filter.Conditions.Add(New ComparisonCondition(ComparisonOperator.LessThan, 0))
        filter.Conditions.Add(New ComparisonCondition(ComparisonOperator.GreaterThan, 100))

        ' By default the LogicalOperator is 'And'. Since we want to 'Or' the above two
        ' conditions, set the LogicalOperator on the condition group to 'Or'.
        filter.Conditions.LogicalOperator = LogicalOperator.Or

        ' Apply the filter to the data presenter.
        fieldLayout.RecordFilters.Add(filter)

    End Sub

The following code adds a RecordFilter for 'Percent' field. The record filter is populated with two conditions. The 'Conditions' property of the RecordFilter is of ConditionGroup type, which has a 'LogicalOperator' property that specifies whether to combine the conditions in the group using 'Or' or 'And' logical operation. The following code snippet sets the LogicalOperator to 'Or'.

C#

using Infragistics.Windows;
using Infragistics.Windows.Controls;
using Infragistics.Windows.Editors;
using Infragistics.Windows.DataPresenter;
using Infragistics.Windows.DataPresenter.Events;

		public void Window1_Loaded( object sender, RoutedEventArgs e )
		{
			FieldLayout fieldLayout = _dp.FieldLayouts[0];

			// Create a filter that shows 'Percent' field where the values are less than 0
			// or greater than 100.
			RecordFilter filter = new RecordFilter( );
			filter.FieldName = "Percent";
			filter.Conditions.Add( new ComparisonCondition( ComparisonOperator.LessThan, 0 ) );
			filter.Conditions.Add( new ComparisonCondition( ComparisonOperator.GreaterThan, 100 ) );

			// By default the LogicalOperator is 'And'. Since we want to 'Or' the above two
			// conditions, set the LogicalOperator on the condition group to 'Or'.
			filter.Conditions.LogicalOperator = LogicalOperator.Or;

			// Apply the filter to the data presenter.
			fieldLayout.RecordFilters.Add( filter );
		}

The following code snippet adds a ConditionGroup with two conditions to the RecordFilter of 'Percent' field. The LogicalOperator on the condition group is set to 'Or' to combine the conditions using 'Or' instead of the default 'And' logical operation.

XAML

        <igDP:XamDataGrid x:Name="_dp" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" >

            <igDP:XamDataGrid.FieldLayouts>
                
                <igDP:FieldLayout IsDefault="true">

                    <igDP:FieldLayout.RecordFilters>
                        <igDP:RecordFilter FieldName="Percent">
                            <!--Add a condition group with two conditions. By default the conditions will be
                            combined using 'And' logical operator. Set LogicalOperator to 'Or' to combine the
                            conditions in the group using 'Or' logical operator.-->
                            <igWindows:ConditionGroup LogicalOperator="Or">
                                <igWindows:ComparisonCondition Operator="LessThan" Value="0" />
                                <igWindows:ComparisonCondition Operator="GreaterThan" Value="100" />
                            </igWindows:ConditionGroup>
                        </igDP:RecordFilter>
                    </igDP:FieldLayout.RecordFilters>
                    
                </igDP:FieldLayout>
                
            </igDP:XamDataGrid.FieldLayouts>
            
        </igDP:XamDataGrid>