internal override IList GetIListSourceListInternal()
{
if (this._cachedBindingList == null)
{
this.EnsureCanEnumerateResults();
this._cachedBindingList = ObjectViewFactory.CreateViewForQuery <T>(this._resultItemType, (IEnumerable <T>) this, this._shaper.Context, this._shaper.MergeOption == MergeOption.NoTracking, this._singleEntitySet);
}
return((IList)this._cachedBindingList);
}
internal override IList GetIListSourceListInternal()
{
// You can only enumerate the query results once, and the creation of an ObjectView consumes this enumeration.
// However, there are situations where setting the DataSource of a control can result in multiple calls to this method.
// In order to enable this scenario and allow direct binding to the ObjectResult instance,
// the ObjectView is cached and returned on subsequent calls to this method.
if (_cachedBindingList == null)
{
EnsureCanEnumerateResults();
var forceReadOnly = _shaper.MergeOption == MergeOption.NoTracking;
_cachedBindingList = ObjectViewFactory.CreateViewForQuery(
_resultItemType, this, _shaper.Context, forceReadOnly, _singleEntitySet);
}
return(_cachedBindingList);
}
internal static IBindingList CreateViewForQuery <TElement>(
TypeUsage elementEdmTypeUsage,
IEnumerable <TElement> queryResults,
ObjectContext objectContext,
bool forceReadOnly,
EntitySet singleEntitySet)
{
Type type1 = (Type)null;
TypeUsage ospaceTypeUsage = ObjectViewFactory.GetOSpaceTypeUsage(elementEdmTypeUsage, objectContext);
if (ospaceTypeUsage == null)
{
type1 = typeof(TElement);
}
Type clrType = ObjectViewFactory.GetClrType <TElement>(ospaceTypeUsage.EdmType);
object objectStateManager = (object)objectContext.ObjectStateManager;
IBindingList bindingList;
if (clrType == typeof(TElement))
{
bindingList = (IBindingList) new ObjectView <TElement>((IObjectViewData <TElement>) new ObjectViewQueryResultData <TElement>((IEnumerable)queryResults, objectContext, forceReadOnly, singleEntitySet), objectStateManager);
}
else if (clrType == (Type)null)
{
bindingList = (IBindingList) new DataRecordObjectView((IObjectViewData <DbDataRecord>) new ObjectViewQueryResultData <DbDataRecord>((IEnumerable)queryResults, objectContext, true, (EntitySet)null), objectStateManager, (RowType)ospaceTypeUsage.EdmType, typeof(TElement));
}
else
{
if (!typeof(TElement).IsAssignableFrom(clrType))
{
throw EntityUtil.ValueInvalidCast(clrType, typeof(TElement));
}
Type type2 = ObjectViewFactory._genericObjectViewQueryResultDataType.MakeGenericType(clrType);
object viewData = type2.GetDeclaredConstructor(typeof(IEnumerable), typeof(ObjectContext), typeof(bool), typeof(EntitySet)).Invoke(new object[4]
{
(object)queryResults,
(object)objectContext,
(object)forceReadOnly,
(object)singleEntitySet
});
bindingList = ObjectViewFactory.CreateObjectView(clrType, type2, viewData, objectStateManager);
}
return(bindingList);
}
internal static IBindingList CreateViewForEntityCollection <TElement>(
EntityType entityType,
EntityCollection <TElement> entityCollection)
where TElement : class
{
TypeUsage ospaceTypeUsage = ObjectViewFactory.GetOSpaceTypeUsage(entityType == null ? (TypeUsage)null : TypeUsage.Create((EdmType)entityType), entityCollection.ObjectContext);
Type type1;
if (ospaceTypeUsage == null)
{
type1 = typeof(TElement);
}
else
{
type1 = ObjectViewFactory.GetClrType <TElement>(ospaceTypeUsage.EdmType);
if (type1 == (Type)null)
{
type1 = typeof(TElement);
}
}
IBindingList bindingList;
if (type1 == typeof(TElement))
{
bindingList = (IBindingList) new ObjectView <TElement>((IObjectViewData <TElement>) new ObjectViewEntityCollectionData <TElement, TElement>(entityCollection), (object)entityCollection);
}
else
{
if (!typeof(TElement).IsAssignableFrom(type1))
{
throw EntityUtil.ValueInvalidCast(type1, typeof(TElement));
}
Type type2 = ObjectViewFactory._genericObjectViewEntityCollectionDataType.MakeGenericType(type1, typeof(TElement));
object viewData = type2.GetDeclaredConstructor(typeof(EntityCollection <TElement>)).Invoke(new object[1]
{
(object)entityCollection
});
bindingList = ObjectViewFactory.CreateObjectView(type1, type2, viewData, (object)entityCollection);
}
return(bindingList);
}
