Individual skill

orchardcore-startup-code

Skill for running initialization code on tenant startup in Orchard Core. Covers IModularTenantEvents and ModularTenantEvents, the ActivatingAsync, ActivatedAsync, TerminatingAsync, TerminatedAsync and RemovingAsync hooks, tenant lazy-loading and the BackgroundService ShellWarmup setting, uninitialized tenant checks, preloading data for synchronous access, RequiredStartup components, and module initialization best practices. Use this skill when requests mention Orchard Core Startup Code, Run Code on Tenant Startup, Registering a Startup Task, Seeding Default Data on Tenant Start, warming up tenants, or closely related Orchard Core implementation or troubleshooting work. Strong matches include OrchardCore.Modules, IModularTenantEvents, ModularTenantEvents, ShellSettings, IsUninitialized, ShellScope, IContentManager, ILogger.

plugins/orchardcore/skills/orchardcore-startup-code/SKILL.md

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Repository stars (not skill ratings): 13
Repository last updated: Oct 21, 2026
License: MIT

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# Orchard Core Startup Code - Prompt Templates

## Run Code on Tenant Startup

You are an Orchard Core expert. Generate code for running initialization tasks when a tenant starts, using the `IModularTenantEvents` interface and `ModularTenantEvents` base class.

### Guidelines

- Implement `IModularTenantEvents` or inherit from `ModularTenantEvents` to run code on tenant activation.
- `ActivatingAsync` is called when a tenant is first hit (lazy-loaded) — use it for initialization logic.
- `ActivatedAsync` is called after all `ActivatingAsync` handlers have completed — use it for post-initialization logic.
- Tenants are **lazy-loaded**: event handlers are NOT invoked at application start — they run on the first request to the tenant, and again each time the shell is rebuilt (after a feature change or a shell release). Set `OrchardCore:BackgroundService:ShellWarmup` to `true` to build shells at startup (the 3.x section name was `OrchardCore_BackgroundService`).
- Handlers also run for **uninitialized** tenants (not set up yet), where `ISession`, `ISiteService` and content services cannot be used; check `ShellSettings.IsUninitialized()` first.
- `ActivatingAsync` events are invoked in module dependency order (based on the module dependency graph).