TreeDataGridCellsPresenter Class

Definition

Namespace:Avalonia.Controls.Primitives

Assembly:Avalonia.Controls.TreeDataGrid

Package:Avalonia.Controls.TreeDataGrid

Presents and manages cells within a row of a Avalonia.Controls.TreeDataGrid control.

public class TreeDataGridCellsPresenter

Inheritance: TreeDataGridColumnarPresenterBase<TreeDataGridColumn> -> TreeDataGridCellsPresenter

Implements:IChildIndexProvider

Remarks

TreeDataGridCellsPresenter is responsible for creating, recycling, and arranging cells horizontally within a row of a TreeDataGrid. It handles the virtualization of cells, ensuring that only visible cells are realized in the visual tree to improve performance.

This presenter is typically used within a Avalonia.Controls.Primitives.TreeDataGridRow control template to display the cells for that row. It coordinates with its parent row and the TreeDataGrid to manage cell lifecycle, selection state, and layout.

Constructors

Name	Description
TreeDataGridCellsPresenter	No summary available.

TreeDataGridCellsPresenter Constructor

public TreeDataGridCellsPresenter()

Methods

Name	Description
GetChildIndex	Gets child's actual index in order of the original source.
Render	No summary available.
TryGetTotalCount	No summary available.

GetChildIndex Method

Gets child's actual index in order of the original source.

public int GetChildIndex(Avalonia.LogicalTree.ILogical child)

Parameters

child Avalonia.LogicalTree.ILogical

Logical child.

Returns

int

Index or -1 if child was not found.

Render Method

public void Render(Avalonia.Media.DrawingContext context)

Parameters

context Avalonia.Media.DrawingContext

TryGetTotalCount Method

public bool TryGetTotalCount(int& count)

Parameters

count int&

Returns

bool

Properties

Name	Description
FrozenColumnCount	Gets or sets the number of frozen columns.
GridLinesVisibility	Gets or sets a value indicating which grid lines are drawn by the presenter.
RowIndex	Gets the index of the row that this presenter is currently displaying.
Rows	Gets or sets the rows collection from which to obtain cell data.

FrozenColumnCount Property

Gets or sets the number of frozen columns.

public int FrozenColumnCount { get; set; }

Remarks

Frozen columns do not scroll horizontally and remain visible at all times.

GridLinesVisibility Property

Gets or sets a value indicating which grid lines are drawn by the presenter.

public Avalonia.Controls.TreeDataGridGridLinesVisibility GridLinesVisibility { get; set; }

Remarks

This property is usually bound to Avalonia.Controls.TreeDataGrid.GridLinesVisibility by the row control template. Grid lines are drawn using the TreeDataGridLineBrush theme resource.

RowIndex Property

Gets the index of the row that this presenter is currently displaying.

public int RowIndex { get; set; }

Value

The zero-based row index, or -1 if the presenter is not realized.

Rows Property

Gets or sets the rows collection from which to obtain cell data.

public Avalonia.Controls.TreeDataGridRows Rows { get; set; }

Value

The collection of rows used to populate cells in this presenter.

Fields

Name	Description
FrozenColumnCountProperty	Defines the Avalonia.Controls.Primitives.TreeDataGridCellsPresenter.FrozenColumnCount property.
GridLinesVisibilityProperty	Defines the Avalonia.Controls.Primitives.TreeDataGridCellsPresenter.GridLinesVisibility property.
RowsProperty	Defines the Avalonia.Controls.Primitives.TreeDataGridCellsPresenter.Rows property.

FrozenColumnCountProperty Field

Defines the Avalonia.Controls.Primitives.TreeDataGridCellsPresenter.FrozenColumnCount property.

public Avalonia.StyledProperty<int> FrozenColumnCountProperty

GridLinesVisibilityProperty Field

Defines the Avalonia.Controls.Primitives.TreeDataGridCellsPresenter.GridLinesVisibility property.

public Avalonia.StyledProperty<Avalonia.Controls.TreeDataGridGridLinesVisibility> GridLinesVisibilityProperty

RowsProperty Field

Defines the Avalonia.Controls.Primitives.TreeDataGridCellsPresenter.Rows property.

public Avalonia.DirectProperty<Avalonia.Controls.Primitives.TreeDataGridCellsPresenter, Avalonia.Controls.TreeDataGridRows> RowsProperty

Events

Name	Description
ChildIndexChanged	Occurs when the index of a child element in the presenter changes.

ChildIndexChanged Event

Occurs when the index of a child element in the presenter changes.

public event EventHandler<Avalonia.LogicalTree.ChildIndexChangedEventArgs> ChildIndexChanged