/// <summary>
/// Helper-Function to extract the keys of Child-Elements having an age of at least 20
/// </summary>
/// <param name="item">Parent-Item to check</param>
/// <returns>List of KEYS of Child-Elements having an Age of at least 20</returns>
private static List <Int32> DoCheckItems(CheckItems item)
{
List <Int32> l = new List <Int32>();
foreach (Int32 key in item.Keys)
{
if (item[key].Age > 20)
{
l.Add(key);
}
}
return(l);
}
public static void RecurseCheckitems(CheckItems items)
{
List <Int32> l_deleteKeys = new List <Int32>();
// Step 1: DFS - Down down down to the deepest level
foreach (Int32 key in items.Keys)
{
RecurseCheckitems(items[key]);
}
// Step 2: Extract all KEYS of Childelements having an AGE of at least 20
foreach (Int32 key in items.Keys)
{
l_deleteKeys.AddRange(DoCheckItems(items[key]));
}
// Step 3: Remove all extracted keys from the current Objecct
foreach (Int32 deleteKey in l_deleteKeys)
{
items.Remove(deleteKey);
}
}
