DropDownItems プロパティ (RecordFilterDropDownOpeningEventArgs)

フィルター ドロップダウンに表示される項目を返します。新しいエントリの追加またはフィルター ドロップダウンから存在のエントリの削除をするのにリストの変更が可能です。

シンタックス

Visual Basic

'宣言
 
Public ReadOnly Property DropDownItems As ObservableCollection(Of FilterDropDownItem)

C#

public ObservableCollection<FilterDropDownItem> DropDownItems {get;}

使用例

Visual Basic

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

    Private Sub Dp_RecordFilterDropDownOpening(ByVal sender As Object, ByVal e As RecordFilterDropDownOpeningEventArgs)
        ' Field property returns the field for which the filter drop-down is opening.
        Dim field As Field = e.Field

        ' RecordManager property returns the record manager associated with the data
        ' records that are being filtered. This is especially pertinent with hierarchical
        ' data source where multiple child data record collections exist. This lets
        ' you know for which data record collection the filter drop-down is being dropped
        ' down.
        Dim recordManager As RecordManager = e.RecordManager

        ' RaisedForCustomFilterSelectionControl property indicates if the drop-down is 
        ' being opened inside the custom filter dialog or within the data presenter itself.
        Dim isRaisedFromWithinCustomFilterDialog As Boolean = e.RaisedForCustomFilterSelectionControl

        ' DropDownItems property returns items that will be displayed in the drop-down.
        ' You can manipulate the list and add your own items to it or remove existing 
        ' items from it.
        Dim dropDownItems As ObservableCollection(Of FilterDropDownItem) = e.DropDownItems

        Debug.WriteLine("Record filter drop-down is opening for field " & field.Name)
    End Sub

C#

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

		private void dp_RecordFilterDropDownOpening( object sender, RecordFilterDropDownOpeningEventArgs e )
		{
			// Field property returns the field for which the filter drop-down is opening.
			Field field = e.Field;

			// RecordManager property returns the record manager associated with the data
			// records that are being filtered. This is especially pertinent with hierarchical
			// data source where multiple child data record collections exist. This lets
			// you know for which data record collection the filter drop-down is being dropped
			// down.
			RecordManager recordManager = e.RecordManager;

			// RaisedForCustomFilterSelectionControl property indicates if the drop-down is 
			// being opened inside the custom filter dialog or within the data presenter itself.
			bool isRaisedFromWithinCustomFilterDialog = e.RaisedForCustomFilterSelectionControl;

			// DropDownItems property returns items that will be displayed in the drop-down.
			// You can manipulate the list and add your own items to it or remove existing 
			// items from it.
			ObservableCollection<FilterDropDownItem> dropDownItems = e.DropDownItems;

			Debug.WriteLine( "Record filter drop-down is opening for field " + field.Name );
		}

XAML

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

            <igDP:XamDataGrid.FieldSettings>
                <!--Set AllowRecordFiltering to enable filter-record.-->
                <igDP:FieldSettings AllowRecordFiltering="true" />
            </igDP:XamDataGrid.FieldSettings>
            
        </igDP:XamDataGrid>