Where does FormElement live in the IronWord API?

FormElement is an abstract class in the IronWord.Models.Abstract namespace, shipped in IronWord.dll. It derives from System.Object and is the base for the RadioButton and TextInput form controls.

What types derive from FormElement in IronWord?

RadioButton and TextInput extend FormElement. Instantiate and configure those concrete controls directly; use a FormElement reference only when a routine should accept either form field without naming the specific type.

Class FormElement

Represents an abstract base class for different types of form elements within a form.

Inheritance

System.Object

FormElement

RadioButton

TextInput

Namespace: IronWord.Models.Abstract

Assembly: IronWord.dll

Syntax

public abstract class FormElement : Object

Treating the interactive form controls of an IronWord document as one family in C# is what FormElement makes possible. It groups the form-field types under one parent so a developer can handle radio buttons and text inputs through a single reference when building or reading a fillable Word document. The base itself carries no fillable behavior of its own; it exists to give the form controls a common type.

The concrete elements that extend it are RadioButton and TextInput, and those are the types a developer instantiates and configures. A FormElement reference is what you hold when a routine should accept either control without caring which one it received, for example when iterating mixed form fields. Because the type is abstract, it is never constructed directly; you work with one of its derived controls and rely on FormElement only as the common base.

The add text how-to builds document content, and the document element tutorial explains where elements like form controls sit in the model.

Constructors

FormElement()

Declaration

protected FormElement()