protected override bool AddEntry(TKey key, TValue value)
{
var entry = new DictionaryEntry(key, value);
var index = GetInsertionIndexForEntry(entry);
KeyedEntryCollection.Insert(index, entry);
return(true);
}
protected override bool SetEntry(TKey key, TValue value)
{
var keyExists = KeyedEntryCollection.Contains(key);
// if identical key/value pair already exists, nothing to do
if (keyExists && value.Equals((TValue)KeyedEntryCollection[key].Value))
{
return(false);
}
// otherwise, remove the existing entry
if (keyExists)
{
KeyedEntryCollection.Remove(key);
}
// add the new entry
var entry = new DictionaryEntry(key, value);
var index = GetInsertionIndexForEntry(entry);
KeyedEntryCollection.Insert(index, entry);
return(true);
}