データグリッドの任意のセルへフォーカスを移動する

public void MoveCell(DataGrid dataGrid, int row, int col, bool IsBeginEdit = false)
{
    if (dataGrid.SelectionUnit == DataGridSelectionUnit.FullRow)
    {
        return;
    }

    if (dataGrid.Visibility != Visibility.Visible)
    {
        return;
    }

    if (dataGrid.Items.Count <= 0)
    {
        return;
    }

    if (row < 0 || row > dataGrid.Items.Count - 1 || col < 0 || col > dataGrid.Columns.Count - 1)
    {
        return;
    }

    dataGrid.Focus();

    dataGrid.UpdateLayout();

    dataGrid.ScrollIntoView(dataGrid.Items[row], dataGrid.Columns[col]);

    DataGridCellInfo cellInfo;

    dataGrid.SelectedCells.Clear();

    if (row < 0 || col < 0)
    {
        cellInfo = new DataGridCellInfo(dataGrid.Items[0], dataGrid.Columns[0]);
    }
    else
    {
        cellInfo = new DataGridCellInfo(dataGrid.Items[row], dataGrid.Columns[col]);
    }

    dataGrid.SelectedCells.Add(cellInfo);

    dataGrid.CurrentCell = cellInfo;

    FrameworkElement contentElement = cellInfo.Column.GetCellContent(cellInfo.Item);

    if (contentElement is null)
    {
        return;
    }

    DataGridCell dgCell = contentElement.Parent as DataGridCell;

    if (dgCell is null)
    {
        return;
    }

    dgCell.Focus();

    if (IsBeginEdit)
    {
        dataGrid.BeginEdit();
    }
}