# PropertyValueDataErrorEventHandler

Namespace: **Wisej.Web**

Assembly: **Wisej.Framework** (4.0.0.0)

The event handler class that is invoked when a property in the grid cannot receive the value modified by the user.

{% tabs %}
{% tab title="C#" %}

```csharp
public delegate void PropertyValueDataErrorEventHandler(Object sender, PropertyValueDataErrorEventArgs e)
```

{% endtab %}

{% tab title="VB.NET" %}

```visual-basic
Public Delegate Sub PropertyValueDataErrorEventHandler(ByVal sender As [Object], ByVal e As PropertyValueDataErrorEventArgs)
```

{% endtab %}
{% endtabs %}

## Parameters

| Name       | Type                                                                                                                        | Description                                                                                                                                                 |
| ---------- | --------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **sender** | [Object](https://docs.microsoft.com/dotnet/api/system.object)                                                               | The source of the event.                                                                                                                                    |
| **e**      | [PropertyValueDataErrorEventArgs](/api/wisej.web/lists-and-grids/propertygrid/wisej.web.propertyvaluedataerroreventargs.md) | A [PropertyValueDataErrorEventArgs](/api/wisej.web/lists-and-grids/propertygrid/wisej.web.propertyvaluedataerroreventargs.md) that contains the event data. |

## Fired By

| Name                                                                                                         | Description                                                                             |
| ------------------------------------------------------------------------------------------------------------ | --------------------------------------------------------------------------------------- |
| [PropertyGrid.PropertyValueDataError](/api/wisej.web/lists-and-grids/propertygrid.md#propertyvaluedataerror) | Fired when a property value is being changed but it is incompatible with the new value. |


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