我有一个文本框,它在视图模型中具有propertychanged属性。当我插入Binding.ValidationRules并插入一些错误的值时,它不会触发propertychanged事件,我不明白为什么。请帮忙解决一下?
<TextBox Name="RiskCode" HorizontalAlignment="Left" Margin="101.923,8,0,81" TextWrapping="Wrap" Width="56.077" MaxLength="6" Validation.ErrorTemplate="{StaticResource validationTemplate}"
Style="{StaticResource textBoxInError}">
<TextBox.Text>
<Binding Path="RiskCode" UpdateSourceTrigger="PropertyChanged">
<Binding.ValidationRules>
<vm:RiskCodeValidation/>
</Binding.ValidationRules>
</Binding>
</TextBox.Text>
</TextBox>