| Add | ApiFormatCondition | null | Adds a new format condition to the collection. |
| AddAboveAverage | ApiAboveAverage | null | Adds a new above average conditional formatting rule to the collection. |
| AddColorScale | ApiColorScale | null | Adds a new color scale conditional formatting rule to the collection. |
| AddDatabar | ApiDatabar | null | Adds a new data bar conditional formatting rule to the collection. |
| AddIconSetCondition | ApiIconSetCondition | null | Adds a new icon set conditional formatting rule to the collection. |
| AddTop10 | ApiTop10 | null | Adds a new top 10 conditional formatting rule to the collection. |
| AddUniqueValues | ApiUniqueValues | null | Adds a new unique values conditional formatting rule to the collection. |
| Delete | None | Deletes all format conditions from the collection. |
| GetCount | number | Returns the number of conditional formatting rules in the collection. |
| GetItem | ApiFormatCondition | null | Returns a format condition by its index. |
| GetParent | ApiRange | Returns the parent range object associated with the current conditional formatting collection. |