> ## Documentation Index
> Fetch the complete documentation index at: https://ancplua.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# AL0082 - Consider using configuration for connection string

> Do not hardcode connection strings in source code

Source: [Al0082ConsiderConnectionStringAnalyzer.cs](https://github.com/ANcpLua/ANcpLua.Analyzers/blob/main/src/ANcpLua.Analyzers/Analyzers/Al0082ConsiderConnectionStringAnalyzer.cs)

## Description

Connection strings should come from configuration (appsettings.json, environment variables, or secrets) rather than being hardcoded in source code.

## Bad Code

```csharp theme={null}
var conn = "Server=prod-db;Database=myapp;User=admin;Password=secret";
builder.Services.AddNpgsql(conn);
```

## Good Code

```csharp theme={null}
var conn = builder.Configuration.GetConnectionString("Default");
builder.Services.AddNpgsql(conn);
```

## Properties

* **Category**: Configuration
* **Severity**: Info
* **Enabled by default**: True
* **Code fix available**: False

## Configuration

```editorconfig theme={null}
dotnet_diagnostic.AL0082.severity = suggestion
```