# AlertException Class

Namespace: [PIX.QMSAPI.Exceptions](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.Exceptions.htm)  
Assembly: PIX.dll

Used for alert messages which should be displayed to the end user.

## Inheritance

* System.Object
  * System.Exception
    * AlertException

## Syntax

```
public class AlertException : Exception, ISerializable, _Exception
```

## Constructors

| Name | Description |
| --- | --- |
| [AlertException(String)](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.Exceptions.AlertException.-ctor.htm#PIX_QMSAPI_Exceptions_AlertException__ctor_System_String_) |  |
| [AlertException(String, Exception)](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.QMSAPI.Exceptions.AlertException.-ctor.htm#PIX_QMSAPI_Exceptions_AlertException__ctor_System_String_System_Exception_) |  |

### Extension Methods

[ApiFilter.FilterFor<T>(T, Nullable<ApiVersion>)](https://help.qlik.com/en-US/qlikview-developer/September2026/Subsystems/QMSAPIref/Content/PIX.ApiFiltering.ApiFilter.FilterFor.htm#PIX_ApiFiltering_ApiFilter_FilterFor__1___0_System_Nullable_PIX_ApiVersion__)