Language Management Module

This module implements the Language management system of an application;

  • Manage languages in the system.
  • Translate texts in the UI.
  • Enable/disable languages.
  • Select default language in the UI.

See the module description page for an overview of the module features.

How to Install

Language management module is pre-installed in the startup templates. So, no need to manually install it.


This module follows the module development best practices guide and consists of several NuGet and NPM packages. See the guide if you want to understand the packages and relations between them.

NuGet Packages

  • Volo.Abp.LanguageManagement.Domain.Shared
  • Volo.Abp.LanguageManagement.Domain
  • Volo.Abp.LanguageManagement.Application.Contracts
  • Volo.Abp.LanguageManagement.Application
  • Volo.Abp.LanguageManagement.EntityFrameworkCore
  • Volo.Abp.LanguageManagement.MongoDB
  • Volo.Abp.LanguageManagement.HttpApi
  • Volo.Abp.LanguageManagement.HttpApi.Client
  • Volo.Abp.LanguageManagement.Web

NPM Packages

  • @volo/
  • @volo/

User Interface

Menu Items

Language management module adds the following items to the "Main" menu, under the "Administration" menu item:

  • Languages: Language management page.
  • Language Texts: Language text management page.

LanguageManagementMenuNames class has the constants for the menu item names.



Languages page is used to manage languages in the system.


You can create a new language or edit an existing language in this page:


  • Enabled languages can be selected as the system language.

Language Texts

Language texts page is used to manage texts in different languages.


You can translate a text for a language or edit the already existing translation in this page.


Data Seed

This module adds some initial data (see the data seed system) to the database when you run the .DbMigrator application:

  • Creates language records configured using AbpLocalizationOptions.

If you want to change the seeded language list, see the next section.


Domain Layer


This module follows the Entity Best Practices & Conventions guide.

  • Language (aggregate root): Represents a language in the system.
  • LanguageText (aggregate root): Represents a language text in the system.


This module follows the Repository Best Practices & Conventions guide.

Following custom repositories are defined for this module:

  • ILanguageRepository
  • ILanguageTextRepository

Domain Services

This module doesn't define any domain service.


This module doesn't define any setting.

Application Layer

Application Services

  • LanguageAppService (implements ILanguageAppService): Implements the use cases of the language management UI.
  • LanguageTextAppService (implements ILanguageTextAppService): Implements the use cases of the language texts management UI.

Database Providers


Table/Collection Prefix & Schema

All tables/collections use the Abp prefix by default. Set static properties on the LanguageManagementDbProperties class if you need to change the table prefix or set a schema name (if supported by your database provider).

Connection String

This module uses AbpLanguageManagement for the connection string name. If you don't define a connection string with this name, it fallbacks to the Default connection string.

See the connection strings documentation for details.

Entity Framework Core

  • AbpLanguages
  • AbpLanguageTexts


  • AbpLanguages
  • AbpLanguageTexts


See the LanguageManagementPermissions class members for all permissions defined for this module.

Distributed Events

This module doesn't define any additional distributed event. See the standard distributed events.

In this document