# ValueSnapshot<T> Properties

- Package: [Aspire.Hosting](/reference/api/csharp/aspire.hosting.md)
- Type: [ValueSnapshot<T>](/reference/api/csharp/aspire.hosting/valuesnapshot-1.md)
- Kind: `Properties`
- Members: `1`

Provides an asynchronously initialized value that: - Can be awaited via GetValueAsync() until the first value or exception is set. - Exposes the latest value after it has been set (supports re-setting). - Tracks whether a value or exception was ever set via IsValueSet. - Supports setting an exception that will be thrown by GetValueAsync. Thread-safe for concurrent SetValue / SetException / GetValueAsync calls.

## IsValueSet

- Name: `IsValueSet`
- Modifiers: `get`
- Returns: `bool`
- Source: [GitHub](https://github.com/microsoft/aspire/blob/bd20f904cde09ecb9c9ae5116a6f13614bf2d7c2/src/Aspire.Hosting/ApplicationModel/ValueSnapshot.cs#L29)

True once a value or exception has been set at least once.

```csharp
public bool IsValueSet { get; }
```