protected override void RestoreStateCore(IDataGridContextVisitable dataGridContextVisitable)
{
try
{
m_rootDataGridContext = SaveRestoreDataGridContextStateVisitor.GetDataGridContextFromVisitable(dataGridContextVisitable);
if (m_saveExpandedItems)
{
for (int i = 0; i < m_itemsToExpand.Count; i++)
{
object dataItemToExpand = m_itemsToExpand[i].Target;
if (dataItemToExpand != null)
{
try
{
// Verify if we have a System.Data.DataView as ItemsSource to
// ensure to restore the System.Data.DataRowView that represents
// the System.Data.DataRow saved previously
System.Data.DataView dataView =
ItemsSourceHelper.TryGetDataViewFromDataGridContext(m_rootDataGridContext);
if ((dataView != null) &&
(dataItemToExpand is System.Data.DataRow))
{
foreach (System.Data.DataRowView dataRowView in dataView)
{
if (dataRowView.Row == dataItemToExpand)
{
dataItemToExpand = dataRowView;
break;
}
}
}
m_rootDataGridContext.ExpandDetails(dataItemToExpand);
}
catch
{
System.Diagnostics.Debug.Assert(false, "Item has moved in the source ?");
}
}
}
}
bool visitWasStopped;
dataGridContextVisitable.AcceptVisitor(0, int.MaxValue, this, DataGridContextVisitorType.Groups, false, out visitWasStopped);
}
finally
{
m_itemsToExpand = null;
m_rootDataGridContext = null;
}
}
private void RecursiveSaveDataGridContextsState(DataGridContext dataGridContext)
{
SaveRestoreDataGridContextStateVisitor saveRestoreDataGridContextStateVisitor
= new SaveRestoreDataGridContextStateVisitor(true, int.MaxValue, m_stopAtFirstCollapsedGroup);
saveRestoreDataGridContextStateVisitor.SaveState(dataGridContext as IDataGridContextVisitable);
m_dataGridContextsStateDictionary.Add(new WeakDataGridContextKey(dataGridContext), saveRestoreDataGridContextStateVisitor);
IEnumerable <DataGridContext> subDataGridContexts = dataGridContext.GetChildContexts();
foreach (DataGridContext subDataGridContext in subDataGridContexts)
{
this.RecursiveSaveDataGridContextsState(subDataGridContext);
}
}
