public static int GetRowIndex(DataGridCell dataGridCell)
{
// Use reflection to get DataGridCell.RowDataItem property value.
System.Reflection.PropertyInfo rowDataItemProperty = dataGridCell.GetType().GetProperty("RowDataItem", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic);
DataGrid dataGrid = GetDataGridFromChild(dataGridCell);
return dataGrid.Items.IndexOf(rowDataItemProperty.GetValue(dataGridCell, null));
}
/// <summary>
/// Creates a structure that identifies the specific cell container.
/// </summary>
/// <param name="cell">
/// A reference to a cell.
/// This structure does not maintain a strong reference to the cell.
/// Changes to the cell will not affect this structure.
/// </param>
/// <remarks>
/// This constructor will tie the DataGridCellInfo to the specific
/// DataGrid that owns the cell container.
/// </remarks>
public DataGridCellInfo(DataGridCell cell)
{
if (cell == null)
{
throw new ArgumentNullException("cell");
}
_item = cell.RowDataItem;
_column = cell.Column;
_owner = new WeakReference(cell.DataGridOwner);
}
public static Microsoft.Windows.Controls.DataGridCell GetCell(this Microsoft.Windows.Controls.DataGrid grid, Microsoft.Windows.Controls.DataGridRow row, int column)
{
if (row != null)
{
DataGridCellsPresenter presenter = GetVisualChild <DataGridCellsPresenter>(row);
if (presenter == null)
{
grid.ScrollIntoView(row, grid.Columns[column]);
presenter = GetVisualChild <DataGridCellsPresenter>(row);
}
Microsoft.Windows.Controls.DataGridCell cell = (Microsoft.Windows.Controls.DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);
return(cell);
}
return(null);
}
/// <summary>
/// Creates the visual tree that will become the content of a cell.
/// </summary>
protected override FrameworkElement GenerateEditingElement(DataGridCell cell, object dataItem)
{
return(LoadTemplateContent(/* isEditing = */ true, dataItem, cell));
}
/// <summary>
/// Creates the visual tree that will become the content of a cell.
/// </summary>
/// <param name="isEditing">Whether the editing version is being requested.</param>
/// <param name="dataItem">The data item for the cell.</param>
/// <param name="cell">The cell container that will receive the tree.</param>
private FrameworkElement LoadTemplateContent(bool isEditing, object dataItem, DataGridCell cell)
{
DataTemplate template = ChooseCellTemplate(isEditing);
DataTemplateSelector templateSelector = ChooseCellTemplateSelector(isEditing);
if (template != null || templateSelector != null)
{
ContentPresenter contentPresenter = new ContentPresenter();
BindingOperations.SetBinding(contentPresenter, ContentPresenter.ContentProperty, new Binding());
contentPresenter.ContentTemplate = template;
contentPresenter.ContentTemplateSelector = templateSelector;
return(contentPresenter);
}
return(null);
}
