ImageHelper IsImage Method Kentico 8.0 API Reference
Determines whether it is an image extension or not. Accepts extensions in both formats ".gif", and "gif"

Namespace: CMS.Helpers
Assembly: CMS.Helpers (in CMS.Helpers.dll) Version: 8.0.0.0 (8.0.5239.26125)

Return Value

Type: OnlineBoolean
See Also