This help topic explains three related areas:

• UI Text Localization: translates component messages, captions, and command text.
• Value Formatting: formats dates, numbers, and currencies for a selected locale.
• Right-to-Left (RTL) Support: controls text direction and mirrored layout behavior.

These areas work together, but each area solves a different task.

• Use UI text localization to load or customize message dictionaries.
• Use value formatting to control how components render and parse values.
• Use RTL support to switch layout direction for right-to-left languages.

Initial Behavior

• DevExtreme resolves UI messages through locale fallback and uses the English dictionary (en) when no matching localized string exists.
• Value formatting uses the active locale and your selected formatting engine (Intl or Globalize).
• Layout direction stays left-to-right until you enable rtlEnabled.

Demos

The following demo includes text localization and value formatting scenarios:

Using Intl Demo Using Globalize Demo