# HttpHeaderCollection.Expires

Kind: Property  
Namespace: `Sisk.Core.Entity`  
Assembly: `Sisk.Core.dll`  
Source: https://docs.sisk-framework.org/api/Sisk.Core.Entity.HttpHeaderCollection.Expires.html

## Expires {#Sisk_Core_Entity_HttpHeaderCollection_Expires}

Gets or sets the value of the HTTP Expires header.

Indicates the date and time after which the response is considered stale, helping clients manage caching.

```csharp
public string? Expires { get; set; }
```

### Property Value

[string](https://learn.microsoft.com/dotnet/api/system.string)?