Set up Azure SQL in the AppHost (EF Core)

This article is the hosting integration reference for the Aspire Azure SQL EF Core integration set. It enumerates the AppHost APIs — with examples for both AppHost.cs and apphost.ts — that you use to model Azure SQL server and database resources in your AppHost project.

If you’re new to the Azure SQL EF Core integration, start with the Get started with Azure SQL EF Core integrations guide. For how consuming C# apps connect using Entity Framework Core, see Connect to Azure SQL with EF Core. For the full cloud-focused hosting reference — including provisioned Bicep, admin deployment scripts, private endpoints, and multi-language connection examples — see Set up Azure SQL Database in the AppHost.

Installation

The Aspire Azure SQL Database hosting integration models the SQL server as the AzureSqlServerResource type and SQL databases as the AzureSqlDatabaseResource type. To access these types and APIs, install the 📦 Aspire.Hosting.Azure.Sql NuGet package in your AppHost project:

C#

Terminal

aspire add azure-sql

Learn more about aspire add in the command reference.

Or, choose a manual installation approach:

C# — AppHost.cs

#:package Aspire.Hosting.Azure.Sql@*

XML — AppHost.csproj

<PackageReference Include="Aspire.Hosting.Azure.Sql" Version="*" />

TypeScript

Terminal

aspire add azure-sql

Learn more about aspire add in the command reference.

This updates your aspire.config.json with the Azure SQL Database hosting integration package:

aspire.config.json

{
  "packages": {
    "Aspire.Hosting.Azure.Sql": "13.3.0"
  }
}

Add Azure SQL server resource and database resource

In your AppHost project, call AddAzureSqlServer to add and return an Azure SQL server resource builder. Chain a call to AddDatabase to add an Azure SQL database resource:

C#

C# — AppHost.cs

var builder = DistributedApplication.CreateBuilder(args);

var sql = builder.AddAzureSqlServer("sql");
var db = sql.AddDatabase("database");

var myService = builder.AddProject<Projects.MyService>()
    .WithReference(db);

// After adding all resources, run the app...
builder.Build().Run();

TypeScript

TypeScript — apphost.ts

import { createBuilder } from './.modules/aspire.js';

const builder = await createBuilder();

const sql = await builder.addAzureSqlServer("sql");
const db = await sql.addDatabase("database");

await builder.addNodeApp("api", "./api", "index.js")
    .withReference(db);

// After adding all resources, run the app...
await builder.build().run();

1. The AddAzureSqlServer (or addAzureSqlServer) call models an Azure SQL Server that is provisioned in Azure when you publish your app.

2. Calling AddDatabase (or addDatabase) on the returned resource builder models a named database within that server.

3. The WithReference (or withReference) call configures a named connection in the consuming project that matches the database resource name.

Bemærk

When you call AddAzureSqlServer, it implicitly calls AddAzureProvisioning — which adds support for generating Azure resources dynamically during app startup. The app must configure the appropriate subscription and location. For more information, see Local provisioning: Configuration.

Note

When you reference an Azure SQL Database resource from the AppHost, Aspire makes several properties available to the consuming project, such as connection strings, URIs, and port numbers. For a complete list of these properties, see Connect to Azure SQL with EF Core.

Connect to an existing Azure SQL server

You might have an existing Azure SQL Database service that you want to connect to. Chain a call to AsExisting (or asExisting) to annotate that your resource already exists in Azure:

C#

C# — AppHost.cs

var builder = DistributedApplication.CreateBuilder(args);

var existingName = builder.AddParameter("existingSqlServerName");
var existingResourceGroup = builder.AddParameter("existingSqlServerResourceGroup");

var sql = builder.AddAzureSqlServer("sql")
    .AsExisting(existingName, existingResourceGroup)
    .AddDatabase("database");

builder.AddProject<Projects.ExampleProject>()
    .WithReference(sql);

// After adding all resources, run the app...
builder.Build().Run();

TypeScript

TypeScript — apphost.ts

import { createBuilder } from './.modules/aspire.js';

const builder = await createBuilder();

const existingName = await builder.addParameter("existingSqlServerName");
const existingResourceGroup = await builder.addParameter("existingSqlServerResourceGroup");

const sql = await builder.addAzureSqlServer("sql");
await sql.asExisting(existingName, { resourceGroup: existingResourceGroup });
const db = await sql.addDatabase("database");

await builder.addNodeApp("api", "./api", "index.js")
    .withReference(db);

// After adding all resources, run the app...
await builder.build().run();

For more information on treating Azure SQL resources as existing resources, see Use existing Azure resources.

Run Azure SQL server resource as a container

During local development and testing, you can run an Azure SQL server as a local SQL Server container instead of provisioning an actual Azure resource. Call RunAsContainer (or runAsContainer) to switch to a local container:

C#

C# — AppHost.cs

var builder = DistributedApplication.CreateBuilder(args);

var sql = builder.AddAzureSqlServer("sql")
    .RunAsContainer();

var db = sql.AddDatabase("database");

var exampleProject = builder.AddProject<Projects.ExampleProject>()
    .WithReference(db);

// After adding all resources, run the app...
builder.Build().Run();

TypeScript

TypeScript — apphost.ts

import { createBuilder } from './.modules/aspire.js';

const builder = await createBuilder();

const sql = await builder.addAzureSqlServer("sql");
await sql.runAsContainer();

const db = await sql.addDatabase("database");

await builder.addNodeApp("api", "./api", "index.js")
    .withReference(db);

// After adding all resources, run the app...
await builder.build().run();

When RunAsContainer is active, Aspire pulls a SQL Server container image and runs it locally. The consuming project receives the same connection environment variables it would receive when deployed to Azure, so your code works without modification between local and cloud environments.

Tip

RunAsContainer accepts an optional delegate (C#) or options object (TypeScript) that lets you customize the underlying SqlServerServerResource configuration. For example, you can add a data volume or data bind mount. For more information, see the Aspire SQL Server hosting integration section.

Admin deployment script

When you deploy an Azure SQL Server resource, Aspire runs a deployment script that grants your application’s managed identity access to the SQL database. For more information, including private endpoint considerations and how to customize the deployment script behavior, see Admin deployment script.