public DataColumn BuildColumn(DataField field, Array classInstances, int classInstancesCount)
{
Array data = Array.CreateInstance(field.ClrNullableIfHasNullsType, classInstancesCount);
CollectorTag tag = GetCollectorTag(new TypeCachingKey(_classType, field));
int collected = tag.Collect(classInstances, data, classInstancesCount);
return(new DataColumn(field, data));
}
private CollectorTag GetCollectorTag(TypeCachingKey key)
{
if (!_collectorKeyToTag.TryGetValue(key, out CollectorTag value))
{
value = new CollectorTag
{
Collect = CreateCollectorDelegate(key.ClassType, key.Field)
};
_collectorKeyToTag[key] = value;
}
return(value);
}
