# AspirePostgreSqlNpgsqlExtensions

- Kind: `class`
- Package: [Aspire.Npgsql](/reference/api/csharp/aspire.npgsql.md)
- Version: `13.4.0`
- Namespace: `Microsoft.Extensions.Hosting`
- Target framework: `net10.0`
- Source: [GitHub](https://github.com/microsoft/aspire/blob/cbc352350f1a9bafbaff10d14a2c8de4ac186a48/src/Components/Aspire.Npgsql/AspirePostgreSqlNpgsqlExtensions.cs)

Extension methods for connecting PostgreSQL database with Npgsql client

## Definition

```csharp
namespace Microsoft.Extensions.Hosting;

public static class AspirePostgreSqlNpgsqlExtensions
{
    // ...
}
```

## Methods

- [AddKeyedNpgsqlDataSource(IHostApplicationBuilder, string, Action<NpgsqlSettings>, Action<NpgsqlDataSourceBuilder>)](/reference/api/csharp/aspire.npgsql/aspirepostgresqlnpgsqlextensions/methods.md#addkeyednpgsqldatasource-ihostapplicationbuilder-string-action-npgsqlsettings-action-npgsqldatasourcebuilder) `extension` -- Registers `NpgsqlDataSource` as a keyed service for given `name` for connecting PostgreSQL database with Npgsql client. Configures health check, logging and telemetry for the Npgsql client.
- [AddNpgsqlDataSource(IHostApplicationBuilder, string, Action<NpgsqlSettings>, Action<NpgsqlDataSourceBuilder>)](/reference/api/csharp/aspire.npgsql/aspirepostgresqlnpgsqlextensions/methods.md#addnpgsqldatasource-ihostapplicationbuilder-string-action-npgsqlsettings-action-npgsqldatasourcebuilder) `extension` -- Registers `NpgsqlDataSource` service for connecting PostgreSQL database with Npgsql client. Configures health check, logging and telemetry for the Npgsql client.