| Overload | Description |
|---|---|
| IndexOf(Int32) | Searches for the specified ID and returns the zero-based index of the corresponding column. |
| IndexOf(TaskProperty) | Searches for the specified value of TaskPropertyColumn.Property and returns the zero-based index of the corresponding column. |
| IndexOf(BaseColumn) | (Inherited from System.Collections.ObjectModel.Collection<BaseColumn>) |