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

# Nullable

> Extension methods for Nullable from System.Runtime

## Definition

**Assembly:** System.Runtime.dll

**Namespace:** System

## Syntax

```csharp theme={"dark"}
System.Nullable<System.Guid>
```

## Summary

This type is defined in System.Runtime.

## Remarks

See [Microsoft documentation](https://learn.microsoft.com/dotnet/api/system.nullable\{system.guid}) for more information about the rest of the API.

## Methods

### <Icon icon="puzzle-piece" iconType="duotone" color="#E0EC32" size={24} className="mr-2" /> IsNullOrEmpty <Badge color="green">Extension</Badge>

<Note>Extension method from `System.EasyAF_GuidExtensions`</Note>

A sweet little extension to check if a Nullable Guid has a real value or not.

#### Syntax

```csharp theme={"dark"}
public static bool IsNullOrEmpty(System.Nullable<System.Guid> instance)
```

#### Parameters

| Name       | Type                           | Description |
| ---------- | ------------------------------ | ----------- |
| `instance` | `System.Nullable<System.Guid>` | -           |

#### Returns

Type: `bool`
A [Boolean](https://learn.microsoft.com/dotnet/api/system.boolean) indicating whether or not the Guid is null or empty.