# HttpKnownHeaderNames.ETag

Kind: Field  
Namespace: `Sisk.Core.Http`  
Assembly: `Sisk.Core.dll`  
Source: https://docs.sisk-framework.org/api/Sisk.Core.Http.HttpKnownHeaderNames.ETag.html

## ETag {#Sisk_Core_Http_HttpKnownHeaderNames_ETag}

The HTTP ETag header.

Provides a unique identifier for a specific version of a resource, allowing clients to cache and validate resources efficiently.

```csharp
public const string ETag = "ETag"
```

### Field Value

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