| オーバーロード | 解説 |
|---|---|
| IndexOf(String) | Determines the index of the first occurrence of a RibbonButton with the specified text in this collection. |
| IndexOf(RibbonItem) | Determines the index of a specific RibbonItem in the collection. C1.Win.Ribbon.RibbonItemCollectionBaseから継承されます。 |