# NameValidationPolicyAnnotation Fields

- Package: [Aspire.Hosting](/reference/api/csharp/aspire.hosting.md)
- Type: [NameValidationPolicyAnnotation](/reference/api/csharp/aspire.hosting/namevalidationpolicyannotation.md)
- Kind: `Fields`
- Members: `2`

Represents an annotation that customizes the name validation rules applied to a resource when it is added to the application model.

## Default

- Name: `Default`
- Modifiers: `static` `readonly`
- Returns: [NameValidationPolicyAnnotation](/reference/api/csharp/aspire.hosting/namevalidationpolicyannotation.md)
- Source: [GitHub](https://github.com/microsoft/aspire/blob/bd20f904cde09ecb9c9ae5116a6f13614bf2d7c2/src/Aspire.Hosting/ApplicationModel/NameValidationPolicyAnnotation.cs)

The default policy that enforces all standard name validation rules.

```csharp
public static readonly NameValidationPolicyAnnotation Default
```

## None

- Name: `None`
- Modifiers: `static` `readonly`
- Returns: [NameValidationPolicyAnnotation](/reference/api/csharp/aspire.hosting/namevalidationpolicyannotation.md)
- Source: [GitHub](https://github.com/microsoft/aspire/blob/bd20f904cde09ecb9c9ae5116a6f13614bf2d7c2/src/Aspire.Hosting/ApplicationModel/NameValidationPolicyAnnotation.cs)

A policy that disables all name validation rules.

```csharp
public static readonly NameValidationPolicyAnnotation None
```