# DataGridControl.ValidateCellValue event

Occurs when a cell value is validated. Set the ErrorContent property to indicate an error.

```csharp
public event EventHandler<DataGridValidateCellValueEventArgs>? ValidateCellValue;
```

## See Also

* class [DataGridValidateCellValueEventArgs](../DataGridValidateCellValueEventArgs.md)
* class [DataGridControl](../DataGridControl.md)
* namespace [Eremex.AvaloniaUI.Controls.DataGrid](../index.md)

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