Loading Partial Element Hierarchy

 1// Get the Database
 2PISystems myPISystems = new PISystems();
 3PISystem myPISystem = myPISystems.DefaultPISystem;
 4if (myPISystem == null)
 5    throw new InvalidOperationException("Default PISystem was not found.");
 6AFDatabase myDB = myPISystem.Databases[dbName];
 7if (myDB == null)
 8    throw new InvalidOperationException("Database was not found.");
 9
10// Get a specific area of the element hierarchy to load 
11AFElement myNorthPlantArea56 = myDB.Elements[@"NorthPlant\Area56"];
12if (myNorthPlantArea56 == null)
13    throw new InvalidOperationException(@"Element 'NorthPlant\Area56' was not found.");
14
15// Below is an alternate mechanism to load hierarchical elements
16// in bulk. The LoadElementReferences will load the next level
17// of a hierarchy from the list of elements provided it.
18// In this example, we load 4 levels of the hierarchy, but only
19// fully load and process the last level
20AFNamedCollectionList<AFElement> elementsLevel1 =
21    new AFNamedCollectionList<AFElement>();
22elementsLevel1.Add(myNorthPlantArea56);
23
24AFNamedCollectionList<AFElement> elementsLevel2 =
25    AFElement.LoadElementReferences(elementsLevel1);
26
27AFNamedCollectionList<AFElement> elementsLevel3 =
28    AFElement.LoadElementReferences(elementsLevel2);
29
30AFNamedCollectionList<AFElement> elementsLevel4 =
31    AFElement.LoadElementReferences(elementsLevel3);
32
33AFElement.LoadElements(elementsLevel4);
34
35// Now process just this level
36int count = 0;
37foreach (AFElement item in elementsLevel4)
38    count += item.Attributes.Count;
39
40Console.WriteLine("Found {0} Elements at the 4th level which contain {1} Attributes.",
41    elementsLevel4.Count, count);