The ITreeListColumns interface contains properties and methods that are used to work with the collection of columns of the TreeList and TreeCombo components.
| Property name | Brief description | |
| Count | The Count property returns the number of columns in the collection. | |
| Item | The Item property returns the specified column parameters. | |
| TreeControl | The TreeControl property returns the parent object. |
| Method name | Brief description | |
| Add | The Add method adds a new column. | |
| Clear | The Clear method removes all columns from the collection. | |
| Delete | The Delete method enables the user to delete a column. |
See also: