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TreeDataGridSelectionChangedEventArgs<T> Class

Definition​

Namespace:Avalonia.Controls.Selection
Assembly:Avalonia.Controls.TreeDataGrid
Package:Avalonia.Controls.TreeDataGrid

Provides strongly-typed data for the TreeDataGrid selection changed event.

public class TreeDataGridSelectionChangedEventArgs<T>

Inheritance: EventArgs -> TreeDataGridSelectionChangedEventArgs -> TreeDataGridSelectionChangedEventArgs<T>

Constructors​

NameDescription
TreeDataGridSelectionChangedEventArgs<T>No summary available.

TreeDataGridSelectionChangedEventArgs<T> Constructor​

public TreeDataGridSelectionChangedEventArgs<T>(System.Collections.Generic.IReadOnlyList<Avalonia.Controls.IndexPath> deselectedIndexes, System.Collections.Generic.IReadOnlyList<Avalonia.Controls.IndexPath> selectedIndexes, System.Collections.Generic.IReadOnlyList<T> deselectedItems, System.Collections.Generic.IReadOnlyList<T> selectedItems, System.Collections.Generic.IReadOnlyList<Avalonia.Controls.CellIndex> deselectedCellIndexes, System.Collections.Generic.IReadOnlyList<Avalonia.Controls.CellIndex> selectedCellIndexes)

Parameters​

deselectedIndexes System.Collections.Generic.IReadOnlyList<Avalonia.Controls.IndexPath>

selectedIndexes System.Collections.Generic.IReadOnlyList<Avalonia.Controls.IndexPath>

deselectedItems System.Collections.Generic.IReadOnlyList<T>

selectedItems System.Collections.Generic.IReadOnlyList<T>

deselectedCellIndexes System.Collections.Generic.IReadOnlyList<Avalonia.Controls.CellIndex>

selectedCellIndexes System.Collections.Generic.IReadOnlyList<Avalonia.Controls.CellIndex>

Properties​

NameDescription
DeselectedCellIndexesGets the cell indexes of the cells that were removed from the selection.
DeselectedIndexesGets the row indexes of the items that were removed from the selection.
DeselectedItemsGets the strongly-typed items that were removed from the selection.
SelectedCellIndexesGets the cell indexes of the cells that were added to the selection.
SelectedIndexesGets the row indexes of the items that were added to the selection.
SelectedItemsGets the strongly-typed items that were added to the selection.

DeselectedCellIndexes Property​

Gets the cell indexes of the cells that were removed from the selection.

public System.Collections.Generic.IReadOnlyList<Avalonia.Controls.CellIndex> DeselectedCellIndexes { get; set; }

Remarks​

For row selection, this expands deselected rows across all columns. For cell selection, this contains the specific deselected cells.

DeselectedIndexes Property​

Gets the row indexes of the items that were removed from the selection.

public System.Collections.Generic.IReadOnlyList<Avalonia.Controls.IndexPath> DeselectedIndexes { get; set; }

Remarks​

When items are removed from the data source, their indexes are no longer valid and will not appear in this collection. Use Avalonia.Controls.Selection.TreeDataGridSelectionChangedEventArgs.DeselectedItems to identify removed items in that case.

DeselectedItems Property​

Gets the strongly-typed items that were removed from the selection.

public System.Collections.Generic.IReadOnlyList<T> DeselectedItems { get; set; }

Remarks​

When items are removed from the data source they are provided here as a concrete list that remains valid regardless of later source modifications. Otherwise (when items are deselected by a selection change) the items are resolved lazily against the data source and must be read before the source collection is next modified. Reading them after a modification (for example from an asynchronous or dispatcher-queued handler) throws InvalidOperationException.

SelectedCellIndexes Property​

Gets the cell indexes of the cells that were added to the selection.

public System.Collections.Generic.IReadOnlyList<Avalonia.Controls.CellIndex> SelectedCellIndexes { get; set; }

Remarks​

For row selection, this expands selected rows across all columns. For cell selection, this contains the specific selected cells.

SelectedIndexes Property​

Gets the row indexes of the items that were added to the selection.

public System.Collections.Generic.IReadOnlyList<Avalonia.Controls.IndexPath> SelectedIndexes { get; set; }

SelectedItems Property​

Gets the strongly-typed items that were added to the selection.

public System.Collections.Generic.IReadOnlyList<T> SelectedItems { get; set; }

Remarks​

The items in this collection are resolved lazily against the data source, so they must be read before the source collection is next modified. Reading them after a modification (for example from an asynchronous or dispatcher-queued handler) throws InvalidOperationException. Use Avalonia.Controls.Selection.TreeDataGridSelectionChangedEventArgs<T>.SelectedIndexes, which is not affected, if you need to retain the change past a source modification.

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