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Throws an exception if collection already contains item with specified key.
public virtual void CheckKey(TItem item, TKey oldKey, TKey newKey)
Public Overridable Sub CheckKey(item As TItem, oldKey As TKey, newKey As TKey)
Type | Name | Description |
---|---|---|
TItem | item | The item to check. |
TKey | oldKey | The old key. |
TKey | newKey | The new key. |