---
title: "Interface IMetadataService | Customer's Canvas On-Premises"
canonical: "https://customerscanvas.com/docs/on-premises/design-atoms-cs/reference/api/Aurigma.DesignAtoms.Services/IMetadataService/"
---

# Interface IMetadataService

> `System.Threading.Tasks.Task<Aurigma.DesignAtoms.Model.Items.ImageMetaData>`

###### **Namespace**: [Aurigma.DesignAtoms.Services](https://customerscanvas.com/docs/on-premises/design-atoms-cs/reference/api/Aurigma.DesignAtoms.Services.md)

###### **Assembly**: Aurigma.DesignAtoms.dll

```csharp title="Syntax"
public interface IMetadataService
```

## Methods

### GetMetadata

```csharp
Task<ImageMetaData> GetMetadata(string key, GetMetadataParams metadataParams, Func<MetadataInfo, bool> validateMetadataCallback, Func<Task<Stream>> requestStreamCallback)
```

##### Parameters

| Type | Name | Description |
|:---|:---|:---|
| `System.String` | *key* |  |
| [Aurigma.DesignAtoms.Services.GetMetadataParams](https://customerscanvas.com/docs/on-premises/design-atoms-cs/reference/api/Aurigma.DesignAtoms.Services/GetMetadataParams.md) | *metadataParams* |  |
| `System.Func<Aurigma.DesignAtoms.Services.MetadataInfo,System.Boolean>` | *validateMetadataCallback* |  |
| `System.Func<System.Threading.Tasks.Task<System.IO.Stream>>` | *requestStreamCallback* |  |

##### Returns