josueyeray 

Silverlight like textbox validations for Windows Phone 8. Adding a simple behavior to your textbox you can make text validations with regular expressions, numeric / non numeric or not empty conditions. Also you can control when the validation is realized: on loaded, on keypress, on tapped, on lost... More information

Xamarin.Forms 2.1 behaviors library. Include common behaviors like InvokeCommandAction, navigateToAction, EffectsBehavior, animation behaviors: Fade, Scale, Rotate.

Silverlight like textbox validations for Windows 8. Adding a simple behavior to your textbox you can make text validations with regular expressions, numeric / non numeric or not empty conditions. Also you can control when the validation is realized: on loaded, on keypress, on tapped, on lost... More information