/// <summary>
/// Converts an <see cref="DataGridCell"/> to its row index.
/// </summary>
/// <param name="value">Value to be converted.</param>
/// <param name="targetType">Type to convert to.</param>
/// <param name="parameter">Optional conversion parameter.</param>
/// <param name="culture">Globalization info.</param>
/// <returns>The index of the cell. If none found, will return -1.</returns>
public Object Convert(Object value, Type targetType, Object parameter, CultureInfo culture)
{
DataGridCell item = value as DataGridCell;
DataGridRow dataGridRow = item?.Ancestors().OfType <DataGridRow>().FirstOrDefault();
DataGrid dataGrid = dataGridRow?.Ancestors().OfType <DataGrid>().FirstOrDefault();
Int32 index = dataGrid?.ItemContainerGenerator.IndexFromContainer(dataGridRow) ?? -1;
return(index.ToString());
}
private void OnDataGridPreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (!(sender is VsDataGrid dataGrid))
{
return;
}
FrameworkElement fe = GetFrameworkElement(e.OriginalSource);
DataGridCell cell = fe?.Ancestors().OfType <DataGridCell>().FirstOrDefault();
if (cell == null || cell.IsEditing || cell.IsReadOnly || Keyboard.Modifiers != ModifierKeys.None)
{
return;
}
if (!cell.IsFocused)
{
cell.Focus();
}
if (dataGrid.SelectionUnit != DataGridSelectionUnit.FullRow)
{
if (!cell.IsSelected)
{
cell.IsSelected = true;
}
}
else
{
DataGridRow row = cell.Ancestors().OfType <DataGridRow>().FirstOrDefault();
if (row == null || !row.IsSelected)
{
return;
}
row.IsSelected = true;
}
}