AquaLogic Interaction Development Kit (IDK) 6.0.0 |

# IPresentationTemplate.Extension Property

Gets or sets the filename extension for the files that are produced when a content item is published with this Presentation Template.

string Extension {get; set;}

#### Property Value

A string describing the filename extension for the files that are produced when a content item is published with this Presentation Template. The default filename extension is "html". The extension cannot be `null`, empty, or longer than 255 characters.

#### Exceptions

Exception Type | Condition
--- | ---
InvalidOperationException | The Presentation Template has already been removed.

#### See Also

IPresentationTemplate Interface | Plumtree.Remote.PRC.Content.PresentationTemplate Namespace