# ValidationErrorStyle ```csharp public enum ValidationErrorStyle ``` Namespace `SharpCell` · package `SharpCell` What Excel does when a value breaks a rule. ## Values | Name | Value | Description | |---|---|---| | `Stop` | 0 | Refuses the value. | | `Warning` | 1 | Asks whether to keep the value. | | `Information` | 2 | Tells the user and keeps the value. |