# Sandbox.UI.TextEntry.StringRegex

```csharp
string StringRegex { get; set; }
```

If set, [Sandbox.UI.TextEntry.HasValidationErrors](/api/Sandbox.UI.TextEntry/HasValidationErrors) will return true if doesn't match regex.

Declared in [Sandbox.UI.TextEntry](/api/Sandbox.UI.TextEntry).
Assembly: `Sandbox.Engine`.