private static List<DataGridDetailDescription> GetDataGridDetailDescriptions( PropertyDescriptorCollection properties )
{
Type enumrableType = typeof( IEnumerable );
Type listSourceType = typeof( IListSource );
List<DataGridDetailDescription> detailDescriptions = new List<DataGridDetailDescription>( properties.Count );
foreach( PropertyDescriptor property in properties )
{
// We only create details for properties that are browsable.
if( !property.IsBrowsable )
continue;
if( ItemsSourceHelper.IsASubRelationship( property.PropertyType ) )
{
PropertyDetailDescription description = new PropertyDetailDescription( property );
description.IsAutoCreated = true;
detailDescriptions.Add( description );
}
}
return detailDescriptions;
}
protected internal override void Initialize(DataGridCollectionViewBase parentCollectionView)
{
base.Initialize(parentCollectionView);
if (this.PropertyDescriptor != null)
{
return;
}
string relationName = this.RelationName;
if (String.IsNullOrEmpty(relationName) == true)
{
throw new InvalidOperationException("An attempt was made to initialize a PropertyDetailDescription whose Name property has not been set.");
}
foreach (DataGridDetailDescription detailDescription in parentCollectionView.DetailDescriptions.DefaultDetailDescriptions)
{
PropertyDetailDescription propertyDetailDescription = detailDescription as PropertyDetailDescription;
if (propertyDetailDescription != null)
{
if (propertyDetailDescription.RelationName == relationName)
{
this.PropertyDescriptor = propertyDetailDescription.PropertyDescriptor;
return;
}
}
}
// The DetailDescription for RelationName was not found in DefaultDetailDescription
// and may not have the PropertyDetailDescriptionAttribute
if (this.PropertyDescriptor == null)
{
PropertyDescriptor relationDescriptor = null;
IEnumerable enumeration = parentCollectionView as IEnumerable;
if (enumeration != null)
{
// Try to get it from the first item in the DataGridCollectionView
object firstItem = ItemsSourceHelper.GetFirstItemByEnumerable(enumeration);
if (firstItem != null)
{
relationDescriptor = this.GetPropertyDescriptorFromFirstItem(firstItem);
if (relationDescriptor != null)
{
this.PropertyDescriptor = relationDescriptor;
return;
}
}
}
// If the list is empty, check if the SourceCollection is ITypedList
ITypedList iTypedList = parentCollectionView.SourceCollection as ITypedList;
if (iTypedList != null)
{
relationDescriptor = this.GetPropertyDescriptorFromITypedList(iTypedList);
if (relationDescriptor != null)
{
this.PropertyDescriptor = relationDescriptor;
return;
}
}
}
throw new InvalidOperationException("An attempt was made to initialize a PropertyDetailDescription whose data source does not contain a property that corresponds to the specified relation name.");
}
