public static void RestoreSelection <TRow>(
[NotNull] DataGridView grid,
[NotNull] BoundDataGridSelectionState <TRow> selectionState,
bool forceSelectedRowsVisible = true) where TRow : class
{
grid.ClearSelection();
if (selectionState.SelectionCount == 0)
{
return;
}
foreach (DataGridViewRow row in grid.Rows)
{
var tableRow = row.DataBoundItem as TRow;
if (tableRow != null && selectionState.IsSelected(tableRow))
{
// Note: during sorting, rows have Visible == false in *some* situations
if (forceSelectedRowsVisible)
{
// Ensure that the previously selected row is again visible. Otherwise the row may be
// immediately unselected if there is a filter defined for it
// (if the grid is a FilterableDataGridView)
row.Visible = true;
}
row.Selected = true;
}
}
}
private void _dataGridView_SortingColumn(object sender, SortingColumnEventArgs e)
{
_msg.VerboseDebugFormat("BoundDataGridHandler._dataGridView_SortingColumn");
// the user is sorting on a column - remember the selected rows
_savedSelection = GetSelectionState();
}
public void RestoreSelection(
[NotNull] BoundDataGridSelectionState <ROW> selectionState)
{
Assert.ArgumentNotNull(selectionState, nameof(selectionState));
if (_msg.IsVerboseDebugEnabled)
{
_msg.VerboseDebugFormat("Restoring selection ({0} row(s))",
selectionState.SelectionCount);
}
DataGridViewUtils.RestoreSelection(_dataGridView, selectionState);
}
/// <summary>
/// Binds a data grid view to the given binding list of rows
/// </summary>
/// <param name="rows">The rows.</param>
/// <param name="autoGenerateColumns">Indicates if columns should be dynamically added based on the bound type</param>
/// <param name="sortStateOverride">Optional sort state to apply regardless of the current sort state of the grid.</param>
/// <param name="defaultSortState">Optional default sort state, to be applied when there is no current or override sort state.</param>
/// <param name="selectionStateOverride"></param>
public bool BindTo([NotNull] IList <ROW> rows,
bool autoGenerateColumns = false,
DataGridViewSortState sortStateOverride = null,
DataGridViewSortState defaultSortState = null,
BoundDataGridSelectionState <ROW> selectionStateOverride = null)
{
Assert.ArgumentNotNull(rows, nameof(rows));
return(DataGridViewUtils.BindTo(_dataGridView, rows,
autoGenerateColumns,
sortStateOverride,
defaultSortState,
selectionStateOverride));
}
private void _dataGridView_Sorted(object sender, EventArgs e)
{
_msg.VerboseDebugFormat("BoundDataGridHandler._dataGridView_Sorted");
// if there are selected rows to restore, do it now
if (_savedSelection == null)
{
return;
}
RestoreSelection(_savedSelection);
_savedSelection = null;
}
/// <summary>
/// Binds a data grid view to the given list of rows
/// </summary>
/// <param name="grid">The data grid view to bind to the list</param>
/// <param name="rows">The rows.</param>
/// <param name="autoGenerateColumns">Indicates if columns should be dynamically added based on the bound type</param>
/// <param name="sortStateOverride">Optional sort state to apply regardless of the current sort state of the grid.</param>
/// <param name="defaultSortState">Optional default sort state, to be applied when there is no current or override sort state.</param>
/// <param name="selectionStateOverride"></param>
public static bool BindTo <TRow>(
[NotNull] DataGridView grid,
[NotNull] IList <TRow> rows,
bool autoGenerateColumns = false,
[CanBeNull] DataGridViewSortState sortStateOverride = null,
DataGridViewSortState defaultSortState = null,
[CanBeNull] BoundDataGridSelectionState <TRow> selectionStateOverride = null)
where TRow : class
{
Assert.ArgumentNotNull(grid, nameof(grid));
Assert.ArgumentNotNull(rows, nameof(rows));
var sortState = sortStateOverride ??
(defaultSortState != null &&
(grid.SortedColumn == null ||
grid.SortOrder == SortOrder.None)
? defaultSortState
: new DataGridViewSortState(grid));
var bindingList = rows as IBindingList;
bool presorted = bindingList != null &&
TrySortBindingList <TRow>(bindingList, grid, sortState);
var selectionState = selectionStateOverride ?? GetSelectionState <TRow>(grid);
grid.AutoGenerateColumns = autoGenerateColumns;
grid.DataSource = typeof(TRow);
grid.DataSource = rows;
bool sortingApplied = presorted || TryApplySortState(grid, sortState);
RestoreSelection(grid, selectionState);
return(sortingApplied);
}
