# Concepts

## Content

ExpressionEditor for WinForms offers an environment to create, edit, validate, and evaluate expressions. Understanding its core concepts provides a foundation for configuring the control and integrating expression-based features into an application.
The following topics outline the concepts of ExpressionEditor:

[Appearance and Styling](/componentone/docs/win/online-expressioneditor/concepts/AppearanceandStyling)

[Create Expressions](/componentone/docs/win/online-expressioneditor/concepts/Creating-Expressions)

[Design-Time Support](/componentone/docs/win/online-expressioneditor/concepts/designtimesupport)

[Expression Editor Elements](/componentone/docs/win/online-expressioneditor/concepts/ExpressionEditorElements)