public CompositeDataSource(DataSourcePartCollection parts)
{
if (parts == null)
{
throw new ArgumentNullException("parts");
}
this.parts = parts;
TrySubscribeOnCollectionChanged(parts);
}
public CompositeEnumerator(DataSourcePartCollection parts)
{
this.parts = parts;
enumerators = new IEnumerator[parts.Count];
int index = 0;
foreach (var part in parts)
{
enumerators[index] = part.Collection.GetEnumerator();
index++;
}
}
public static PropertyDescriptorCollection CreatePropertyDescriptors(DataSourcePartCollection parts, IEnumerator[] enumerators)
{
PropertyDescriptor[] descriptors = new PropertyDescriptor[parts.Count];
int index = 0;
foreach (var part in parts)
{
IEnumerator enumerator = enumerators[index];
CompositeDataSourcePropertyDescriptor descriptor =
new CompositeDataSourcePropertyDescriptor(part.PropertyName, enumerator, part.PropertyType);
descriptors[index] = descriptor;
index++;
}
// todo is there true?
PropertyDescriptorCollection result = new PropertyDescriptorCollection(descriptors, true);
return(result);
}
public static PropertyDescriptorCollection CreatePropertyDescriptors(DataSourcePartCollection parts)
{
IEnumerator[] enumerators = new IEnumerator[parts.Count];
return(CreatePropertyDescriptors(parts, enumerators));
}
public CompositeEnumerable(DataSourcePartCollection parts)
{
this.parts = parts;
}
