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Inserts an element into the System.Collections.ObjectModel.Collection<T> at the specified index.
protected override void InsertItem(int index, BaseGroup item)
| Type | Name | Description |
|---|---|---|
| int | index | The zero-based index at which item should be inserted. |
| BaseGroup | item | The object to insert. The value can be null for reference types. |
| Type | Condition |
|---|---|
| ArgumentOutOfRangeException | Thrown when index is less than zero.-or-index is greater than System.Collections.ObjectModel.Collection<T>.Count. |