using System.Globalization;
using System.Windows.Controls;

namespace ShrlAlgo.Toolkit.Mvvm.ValidationRules;

public class RequiredValidationRule : ValidationRule
{
	//<Binding.ValidationRules>
	//<local:RequiredValidationRule ValidationOnTargetUpdated="True"/>
	//</Binding.ValidationRules>
	//      <TextBox
	//           Grid.Row="2"
	//           InputMethod.IsInputMethodEnabled= "False"
	//           md:HintAssist.Hint= "楼板偏移"
	//           md:TextFieldAssist.SuffixText= "mm" >
	//           < TextBox.Text >
	//               < Binding
	//                   Path= "FloorOffset"
	//                   StringFormat= "{}{0:N2}"
	//                   UpdateSourceTrigger= "PropertyChanged" >
	//                   < !--可以修改值转换异常的提示“未能转换值”-->
	//                   <Binding.ValidationRules>
	//                       <domain:RangeValidationRule Max = "100" Min= "0" xmlns:domain= "clr-namespace:Sai.Toolkit.Mvvm.ValidationRules" ValidatesOnTargetUpdated = "True" />
	//                   </ Binding.ValidationRules >
	//               </ Binding >
	//           </ TextBox.Text >
	//       </ TextBox >
	public override ValidationResult Validate(object value, CultureInfo cultureInfo)
	{
		return string.IsNullOrWhiteSpace((value ?? string.Empty).ToString()) ? new ValidationResult(false, "不能为空") : ValidationResult.ValidResult;
	}
}