#### [Abblix\.Oidc\.Server](https://www.abblix.com/en/docs/api/abblix-oidc-server 'index')
### [Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation 'Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation')

## BackChannelAuthenticationValidatorComposite Class

Represents a composite validator for backchannel authentication contexts, aggregating multiple
validation steps into a single validation process\.
This class implements [IBackChannelAuthenticationContextValidator](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator 'Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.IBackChannelAuthenticationContextValidator')
and allows for the combination of multiple validators that are executed sequentially\.

```csharp
public class BackChannelAuthenticationValidatorComposite : Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator
```

Inheritance [System\.Object](https://learn.microsoft.com/en-us/dotnet/api/system.object 'System\.Object') → BackChannelAuthenticationValidatorComposite

Implements [IBackChannelAuthenticationContextValidator](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator 'Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.IBackChannelAuthenticationContextValidator')
### Constructors

## BackChannelAuthenticationValidatorComposite\(IBackChannelAuthenticationContextValidator\[\]\) Constructor {#Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidatorComposite.BackChannelAuthenticationValidatorComposite(Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator[])}

Represents a composite validator for backchannel authentication contexts, aggregating multiple
validation steps into a single validation process\.
This class implements [IBackChannelAuthenticationContextValidator](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator 'Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.IBackChannelAuthenticationContextValidator')
and allows for the combination of multiple validators that are executed sequentially\.

```csharp
public BackChannelAuthenticationValidatorComposite(Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator[] validators);
```
#### Parameters

###### `validators` [IBackChannelAuthenticationContextValidator](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator 'Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.IBackChannelAuthenticationContextValidator')[\[\]](https://learn.microsoft.com/en-us/dotnet/api/system.array 'System\.Array') {#Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidatorComposite.BackChannelAuthenticationValidatorComposite(Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator[]).validators}

An array of validators that define the validation process\.
### Methods

## BackChannelAuthenticationValidatorComposite\.ValidateAsync\(BackChannelAuthenticationValidationContext\) Method {#Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidatorComposite.ValidateAsync(Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidationContext)}

Asynchronously validates a [BackChannelAuthenticationValidationContext](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidationContext 'Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.BackChannelAuthenticationValidationContext')\.
Iterates through each validation step, returning the first encountered error, if any\.

```csharp
public System.Threading.Tasks.Task<Abblix.Oidc.Server.Common.OidcError?> ValidateAsync(Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidationContext context);
```
#### Parameters

###### `context` [BackChannelAuthenticationValidationContext](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidationContext 'Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.BackChannelAuthenticationValidationContext') {#Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidatorComposite.ValidateAsync(Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidationContext).context}

The backchannel authentication validation context to be validated\.

Implements [ValidateAsync\(BackChannelAuthenticationValidationContext\)](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator#Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.IBackChannelAuthenticationContextValidator.ValidateAsync(Abblix.Oidc.Server.Endpoints.BackChannelAuthentication.Validation.BackChannelAuthenticationValidationContext) 'Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.IBackChannelAuthenticationContextValidator\.ValidateAsync\(Abblix\.Oidc\.Server\.Endpoints\.BackChannelAuthentication\.Validation\.BackChannelAuthenticationValidationContext\)')

#### Returns
[System\.Threading\.Tasks\.Task&lt;](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')[OidcError](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.OidcError 'Abblix\.Oidc\.Server\.Common\.OidcError')[&gt;](https://learn.microsoft.com/en-us/dotnet/api/system.threading.tasks.task-1 'System\.Threading\.Tasks\.Task\`1')  
A task that represents the asynchronous validation operation\.
The task result contains a [OidcError](https://www.abblix.com/en/docs/api/abblix-oidc-server/Abblix.Oidc.Server.Common.OidcError 'Abblix\.Oidc\.Server\.Common\.OidcError')
if a validation error is found, or null if validation succeeds\.