This was an issue I found when trying to use the "Array of Guids" field type. When using the control that Radoslav posted
about in the blogs, you can create and array of guids to facilitate a parent/child relationship with other modules. When I was trying to filter out parent items from a child item, I was presented with some OpenAccess linq issues. I was given the following as a workaround:
myFilteredCollection = dynamicModuleManager.GetDataItems(testType).ToList().
Where(item => item.GetValue<Guid>(
This example would follow the PITS code. Basically I know my child ID and I want to find all parents where my child ID resides in the Parent items "Array of Guids" field. In the above case, the field name is Locations.