WPF.JoshSmith

<Window x:Class="Test.RegexValidator.RegexValidatorWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:jas="clr-namespace:WPF.JoshSmith.Controls.Validation;assembly=WPF.JoshSmith" 
    xmlns:local="clr-namespace:Test.RegexValidator" 
    Title="RegexValidator &amp; RegexValidationRule Test" Height="300" Width="375"
    FontSize="12"
    >
  <Window.Resources>
    <!-- This style allows a validation error message to be 
         displayed in a TextBox's tooltip. -->
    <Style TargetType="{x:Type TextBox}">
      <Setter Property="Margin" Value="0,8" />
      <Style.Triggers>
        <Trigger Property="Validation.HasError" Value="True">
          <Setter Property="ToolTip"
            Value="{Binding 
                    RelativeSource={RelativeSource Self}, 
                    Path=(Validation.Errors)[0].ErrorContent
                   }"/>
        </Trigger>
      </Style.Triggers>      
    </Style>
  </Window.Resources>
  
  <StackPanel Margin="4" VerticalAlignment="Center">
    <TextBlock>E-mail Address:</TextBlock>
    <TextBox 
      Text="{Binding Path=EmailAddress, UpdateSourceTrigger=PropertyChanged}" 
      jas:RegexValidator.RegexText="^[a-zA-Z0-9._%-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$" 
      jas:RegexValidator.ErrorMessage="Invalid e-mail address." 
      />

    <!-- Sets the RegexText attached property to a static property
         which returns a localized regex, for the current date format. -->
    <TextBlock>Localized Date:</TextBlock>
    <TextBox 
      Text="{Binding Path=DateString, UpdateSourceTrigger=PropertyChanged}" 
      jas:RegexValidator.RegexText="{x:Static local:DateFormatRegex.DateRegex}" 
      jas:RegexValidator.ErrorMessage="Invalid date format." 
      />

    <!-- Explicitly creates a RegexValidationRule in order to set the RegexOptions. -->
    <TextBlock>Product Code:</TextBlock>
    <TextBox>
      <TextBox.Text>
        <Binding Path="ProductCode" UpdateSourceTrigger="PropertyChanged">
          <Binding.ValidationRules>
            <jas:RegexValidationRule
              RegexText="^[A-Z]{3}\.[0-9]{3}$"
              ErrorMessage="Invalid product code.  (Examples: ABC.123  xyz.789)"
              RegexOptions="IgnoreCase"
              />
              </Binding.ValidationRules>
            </Binding>
      </TextBox.Text>
    </TextBox>    
  </StackPanel>
</Window>