ValidationRules没有绑定 [英] ValidationRules without binding

问题描述

我想在文本框上使用ValidationRules（和它的UI效果），而不会实际绑定到文本框。

I want to use the ValidationRules (and it's UI effects) on the textbox without actually binding anything to the textbox.

我想将文本框用于一些不受任何限制的输入，但需要使用ValidationRules在焦点丢失后验证输入。

I want to use the textbox for some input that doesn't bound to anything but need to validate the input after focus is lost using the ValidationRules.

可以完成吗？

<TextBox.Text>
   <Binding Path="" UpdateSourceTrigger="LostFocus">
     <Binding.ValidationRules>
        <local:IntegersOnlyValidator/>
     </Binding.ValidationRules>
   </Binding>
 </TextBox.Text>

推荐答案

这对我有用：

<TextBox.Text>
    <Binding RelativeSource="{RelativeSource Self}" Path="Text" UpdateSourceTrigger="LostFocus">
      <Binding.ValidationRules>
        <Filters:IntegersOnlyValidator/>
      </Binding.ValidationRules>
   </Binding>
 </TextBox.Text>

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