WPF TextBox 正則驗證 大于等于0 小于等于1 的兩位小數

原文:WPF TextBox 正則驗證 大于等于0 小于等于1 的兩位小數

正則：^(0\.\d+|[1-9][0-9]|1)$

TextBox綁定正則驗證

<TextBox x:Name="txb"?? MaxLength="6" Margin="1 0 0 0"? Width="40" >
??? <TextBox.Text>
??????? <Binding Path="Opacity" ValidatesOnExceptions="True" ValidatesOnDataErrors="True" StringFormat="F2"?????????? ?
????????? Mode="TwoWay" UpdateSourceTrigger="PropertyChanged"????????????????????????????? >
??????????? <Binding.ValidationRules>
????? ? ? ????? <shared1:InventoryValidationRule? InventoryPattern="^(0\.\d+|[1-9][0-9]|1)$"/>
?????? ? ?? </Binding.ValidationRules>
?????? </Binding>
??? </TextBox.Text>
</TextBox>

?

用到的InventoryValidationRule類：

?public class InventoryValidationRule : ValidationRule
??? {
??????? #region Properties

??????? public string InventoryPattern { get; set; }

??????? #endregion Properties

??????? #region Methods

??????? public override ValidationResult Validate(
????????????????? object value, CultureInfo cultureInfo)
??????? {
??????????? if (InventoryPattern == null)
??????????????? return ValidationResult.ValidResult;

??????????? if (!(value is string))
??????????????? return new ValidationResult(false,
?????????????? "Inventory should be a comma separated list of model numbers as a string");

??????????? string[] pieces = value.ToString().Split(',');
??????????? Regex m_RegEx = new Regex(InventoryPattern);

??????????? foreach (string item in pieces)
??????????? {
??????????????? Match match = m_RegEx.Match(item);
??????????????? if (match == null || match == Match.Empty)
??????????????????? return new ValidationResult(
????????????????????? false, "Invalid input format");
??????????? }

??????????? return ValidationResult.ValidResult;
??????? }

??????? #endregion Methods
??? }