| 名前 | 解説 | |
|---|---|---|
 | Add | Adds the specified item to the end of the collection. |
| Clear | System.Collections.CollectionBaseから継承されます。 |
| Contains | Indicates whether the collection contains a specific DropDownItem. |
| IndexOf | Returns the zero-based index of the first occurrence of a value in the list. |
| Insert | Inserts the specified item into the collection at the specified location. |
| Remove | Removes the specified item from the collection. |
| RemoveAt | System.Collections.CollectionBaseから継承されます。 |