> ## Documentation Index
> Fetch the complete documentation index at: https://cdktn.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# CSharp: Annotations

> CDKTN Core API Reference for Annotations in CSharp.

Includes API for attaching annotations such as warning messages to constructs.

## Methods <a name="Methods" id="Methods" />

| **Name**                                                            | **Description**                                                      |
| ------------------------------------------------------------------- | -------------------------------------------------------------------- |
| <code><a href="#cdktn.Annotations.addError">AddError</a></code>     | Adds an \{ "error": \< message > } metadata entry to this construct. |
| <code><a href="#cdktn.Annotations.addInfo">AddInfo</a></code>       | Adds an info metadata entry to this construct.                       |
| <code><a href="#cdktn.Annotations.addWarning">AddWarning</a></code> | Adds a warning metadata entry to this construct.                     |

***

### `AddError` <a name="AddError" id="cdktn.Annotations.addError" />

```csharp theme={null}
private void AddError(string Message)
```

Adds an \{ "error": \< message > } metadata entry to this construct.

The toolkit will fail synthesis when errors are reported.

#### `Message`<sup>Required</sup> <a name="Message" id="cdktn.Annotations.addError.parameter.message" />

* *Type:* string

The error message.

***

### `AddInfo` <a name="AddInfo" id="cdktn.Annotations.addInfo" />

```csharp theme={null}
private void AddInfo(string Message)
```

Adds an info metadata entry to this construct.

The CLI will display the info message when apps are synthesized.

#### `Message`<sup>Required</sup> <a name="Message" id="cdktn.Annotations.addInfo.parameter.message" />

* *Type:* string

The info message.

***

### `AddWarning` <a name="AddWarning" id="cdktn.Annotations.addWarning" />

```csharp theme={null}
private void AddWarning(string Message)
```

Adds a warning metadata entry to this construct.

The CLI will display the warning when an app is synthesized.
In a future release the CLI might introduce a --strict flag which
will then fail the synthesis if it encounters a warning.

#### `Message`<sup>Required</sup> <a name="Message" id="cdktn.Annotations.addWarning.parameter.message" />

* *Type:* string

The warning message.

***

## Static Functions <a name="Static Functions" id="Static Functions" />

| **Name**                                            | **Description**                                    |
| --------------------------------------------------- | -------------------------------------------------- |
| <code><a href="#cdktn.Annotations.of">Of</a></code> | Returns the annotations API for a construct scope. |

***

### `Of` <a name="Of" id="cdktn.Annotations.of" />

```csharp theme={null}
using Io.Cdktn;

Annotations.Of(IConstruct Scope);
```

Returns the annotations API for a construct scope.

#### `Scope`<sup>Required</sup> <a name="Scope" id="cdktn.Annotations.of.parameter.scope" />

* *Type:* Constructs.IConstruct

The scope.

***