| 名前 | 解説 | |
|---|---|---|
 | CanCancel | Gets the value indicating whether the event handler can cancel the current long operation by setting the Cancel property to true. |
| Cancel | Gets or sets a value indicating whether the current long operation should be cancelled. (This property is ignored if CanCancel is false.) |
| Complete | Gets the approximate completed ratio, from 0 (0% complete) to 1 (100% complete). |