# GrainExtensionNotInstalledException Constructors

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.grainextensionnotinstalledexception/)

## GrainExtensionNotInstalledException {#constructor-7a939711}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.grainextensionnotinstalledexception/constructors/constructor-7a939711/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core.Abstractions/Exceptions/GrainExtensionNotInstalledException.cs#L17-L19)

```csharp
public GrainExtensionNotInstalledException()
```

Initializes a new instance of the [GrainExtensionNotInstalledException](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.grainextensionnotinstalledexception/) class.

## GrainExtensionNotInstalledException(string) {#constructor-string-11f9e5a3}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.grainextensionnotinstalledexception/constructors/constructor-string-11f9e5a3/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core.Abstractions/Exceptions/GrainExtensionNotInstalledException.cs#L28-L30)

```csharp
public GrainExtensionNotInstalledException(string message)
```

Initializes a new instance of the [GrainExtensionNotInstalledException](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.grainextensionnotinstalledexception/) class.

### Parameters

- `message` (`string`): The message.

## GrainExtensionNotInstalledException(string, Exception) {#constructor-string-system-exception-bdd21029}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.grainextensionnotinstalledexception/constructors/constructor-string-system-exception-bdd21029/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core.Abstractions/Exceptions/GrainExtensionNotInstalledException.cs#L42-L44)

```csharp
public GrainExtensionNotInstalledException(string message, Exception innerException)
```

Initializes a new instance of the [GrainExtensionNotInstalledException](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.grainextensionnotinstalledexception/) class.

### Parameters

- `message` (`string`): The message.
- `innerException` (`Exception`): The inner exception.