本文介绍了ValidationRules没有绑定的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
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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