Gets the status of the extra checkbox.

Namespace: Autodesk.Revit.UI
Assembly: RevitAPIUI (in RevitAPIUI.dll) Version: 17.0.0.0 (17.0.1090.0)
Since: 2017

Syntax

C#
`public bool WasExtraCheckBoxChecked()`

Visual Basic
`Public Function WasExtraCheckBoxChecked As Boolean`

Visual C++
`public: bool WasExtraCheckBoxChecked()`

Whether the extra checkbox is checked.

Exceptions

Exception	Condition
Autodesk.Revit.Exceptions InvalidOperationException	Thrown when the task dialog does not have an extra checkbox or the task dialog is not shown yet.