void LoadAutoFieldsState(Object state)
{
if (state != null)
{
Object[] fieldStates = (Object[])state;
int count = fieldStates.Length;
ArrayList list = new ArrayList(count);
foreach (Object fieldState in fieldStates)
{
ObjectListField field = new ObjectListField();
((IStateManager)field).TrackViewState();
((IStateManager)field).LoadViewState (fieldState);
list.Add(field);
}
_autoGeneratedFields = new ObjectListFieldCollection(this, list);
}
}
internal void OnFieldChanged(bool fieldAddedOrRemoved)
{
// Called when a field is added, removed, etc.
if (IsTrackingViewState)
{
_items = null;
// avoid view state being out of [....] with fields.
_ignoreFieldsItemsViewModeViewState = true;
if (fieldAddedOrRemoved)
{
_allFields = null;
}
InvalidateDisplayFieldIndices();
}
}
/////////////////////////////////////////////////////////////////////////
// FIELD AUTO-GENERATION
/////////////////////////////////////////////////////////////////////////
/// <include file='doc\ObjectList.uex' path='docs/doc[@for="ObjectList.CreateAutoGeneratedFields"]/*' />
protected void CreateAutoGeneratedFields(IEnumerable dataSource)
{
if (dataSource == null)
{
return;
}
ArrayList list = new ArrayList();
PropertyDescriptorCollection propertyDescriptors = null;
if (dataSource is ITypedList)
{
propertyDescriptors =
((ITypedList)dataSource).GetItemProperties(new PropertyDescriptor[0]);
}
if (propertyDescriptors == null)
{
IEnumerator enumerator = dataSource.GetEnumerator();
if (enumerator.MoveNext())
{
Object sampleItem = enumerator.Current;
StoreEnumerator(enumerator, sampleItem);
if (IsBindableType(sampleItem.GetType()))
{
list.Add(CreateAutoGeneratedField(
SR.GetString(SR.ObjectList_ItemTitle),
null));
}
else
{
propertyDescriptors = TypeDescriptor.GetProperties(sampleItem);
}
}
}
if (propertyDescriptors != null && propertyDescriptors.Count > 0)
{
foreach (PropertyDescriptor pd in propertyDescriptors)
{
if (IsBindableType(pd.PropertyType))
{
String title;
ObjectListTitleAttribute attr =
(ObjectListTitleAttribute)pd.Attributes[typeof(ObjectListTitleAttribute)];
if (attr != null)
{
title = attr.Title;
}
else
{
title = pd.Name;
}
list.Add(CreateAutoGeneratedField(title, pd.Name));
}
}
}
_autoGeneratedFields = new ObjectListFieldCollection(this, list);
}