DisplayArea プロパティ

Visual Basic
C#

'宣言
 
Public Property DisplayArea As Nullable(Of SummaryDisplayAreas)

public Nullable<SummaryDisplayAreas> DisplayArea {get; set;}

DisplayArea プロパティは、このフィールドの集計計算結果が表示されるかどうか、またどこに表示されるのかを制御します。これはフラグ列挙体タイプです（SummaryDisplayAreas を参照）。したがって集計を表示する複数の表示領域を指定できます。FieldSettings の SummaryDisplayArea プロパティを設定して、フィールド単位で集計表示領域を指定することもできます。

デフォルトで、このプロパティは TopLevelOnly と InGroupByRecords に解決されます。これは集計が各グループ化レコード（グループ化レコードがある場合）に、また最上位のレコードに対して表示されることを意味します。詳細については、SummaryDisplayAreas 列挙体を参照してください。

ユーザーがフィールドで集計計算を実行できるようにする UI を有効にするには、FieldSettings の AllowSummaries プロパティを設定します。詳細は AllowSummaries を参照してください。

Visual Basic

Imports Infragistics.Windows
Imports Infragistics.Windows.Editors
Imports Infragistics.Windows.DataPresenter

    Private Sub Window1_Loaded(ByVal sender As Object, ByVal e As RoutedEventArgs)
        ' Set the data source.
        _dp.DataSource = _dataSource

        ' SummaryDisplayArea property specifies where summaries are to be displayed. See help
        ' for SummaryDisplayAreas enum for a listing of all available options and description 
        ' of each option.
        ' 
        ' This particular setting will display summary results at bottom of records (BottomFixed)
        ' and furthermore the summary record will be fixed or non-scrolling for the root level.
        ' If there group-by records, it will display summaries in each group-by record (InGroupByRecords)
        ' and furthermore the summary record will only be displayed for the top level only 
        ' (TopLevelOnly) which is a desirable behavior because summaries of lower levels are 
        ' displayed inside each group-by record.
        ' 
        _dp.FieldSettings.SummaryDisplayArea = SummaryDisplayAreas.BottomFixed _
                Or SummaryDisplayAreas.InGroupByRecords Or SummaryDisplayAreas.TopLevelOnly


        Dim summaryDef1 As SummaryDefinition = _dp.FieldLayouts(0).SummaryDefinitions.Add( _
            "PriceAverage", SummaryCalculator.Average, "Price")

        ' You can override where a specific summary gets displayed by using the summary 
        ' definition's DisplayArea property.
        ' 
        summaryDef1.DisplayArea = SummaryDisplayAreas.TopFixed _
            Or SummaryDisplayAreas.InGroupByRecords Or SummaryDisplayAreas.TopLevelOnly

        ' If DisplayArea is not specified, it will use the FieldSetting's SummaryDisplayArea
        ' property setting.
        ' 
        Dim summaryDef2 As SummaryDefinition = _dp.FieldLayouts(0).SummaryDefinitions.Add( _
            "PriceSum", SummaryCalculator.Sum, "Price")

    End Sub

C#

using Infragistics.Windows;
using Infragistics.Windows.Editors;
using Infragistics.Windows.DataPresenter;

		public void Window1_Loaded( object sender, RoutedEventArgs e )
		{
			// Set the data source.
			_dp.DataSource = _dataSource;

			// SummaryDisplayArea property specifies where summaries are to be displayed. See help
			// for SummaryDisplayAreas enum for a listing of all available options and description 
			// of each option.
			// 
			// This particular setting will display summary results at bottom of records (BottomFixed)
			// and furthermore the summary record will be fixed or non-scrolling for the root level.
			// If there group-by records, it will display summaries in each group-by record (InGroupByRecords)
			// and furthermore the summary record will only be displayed for the top level only 
			// (TopLevelOnly) which is a desirable behavior because summaries of lower levels are 
			// displayed inside each group-by record.
			// 
			_dp.FieldSettings.SummaryDisplayArea = SummaryDisplayAreas.BottomFixed
				| SummaryDisplayAreas.InGroupByRecords | SummaryDisplayAreas.TopLevelOnly;

			
			SummaryDefinition summaryDef1 = _dp.FieldLayouts[0].SummaryDefinitions.Add( 
				"PriceAverage", SummaryCalculator.Average, "Price" );
			
			// You can override where a specific summary gets displayed by using the summary 
			// definition's DisplayArea property.
			// 
			summaryDef1.DisplayArea = SummaryDisplayAreas.TopFixed
				| SummaryDisplayAreas.InGroupByRecords | SummaryDisplayAreas.TopLevelOnly;

			// If DisplayArea is not specified, it will use the FieldSetting's SummaryDisplayArea
			// property setting.
			// 
			SummaryDefinition summaryDef2 = _dp.FieldLayouts[0].SummaryDefinitions.Add(
				"PriceSum", SummaryCalculator.Sum, "Price" );
		}

XAML

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

            <igDP:XamDataGrid.FieldSettings>
                
                <igDP:FieldSettings SummaryDisplayArea="BottomFixed,InGroupByRecords,TopLevelOnly" />
            </igDP:XamDataGrid.FieldSettings>

            <igDP:XamDataGrid.FieldLayouts>
                <igDP:FieldLayout IsDefault="true" >
                    <igDP:FieldLayout.SummaryDefinitions>
                        
                        <igDP:SummaryDefinition
                                Key="PriceAverage"
                                SourceFieldName="Price"
                                Calculator="Average"
                                DisplayArea="TopFixed,InGroupByRecords,TopLevelOnly"
                            />

                        
                        <igDP:SummaryDefinition
                                Key="PriceSum"
                                SourceFieldName="Price"
                                Calculator="Sum"
                            />
                    </igDP:FieldLayout.SummaryDefinitions>
                </igDP:FieldLayout>
            </igDP:XamDataGrid.FieldLayouts>

        </igDP:XamDataGrid>

参照

SummaryDefinition クラス
 SummaryDefinition メンバ
 SummaryDisplayArea プロパティ
 AllowSummaries プロパティ
 SummaryUIType プロパティ
 SummaryDefinitions プロパティ

WPF | ヘルプ トピック

参照

WPF | ヘルプトピック