设置焦点到WPF MVVM中的UI控件方式Validation.HasError [英] Setting focus to UI control in WPF MVVM Way on Validation.HasError

问题描述

问题：Validation.HasError通过INotifyDataErrorInfo实现自动突出显示有错误的控件。

Problem: Validation.HasError automatically highlights the control that has Error via INotifyDataErrorInfo implementation.

我的问题是我需要将焦点放在具有ERR的具体控件上。

My problem is i need to set focus on that specific control when it has ERror.

我该怎么做？

推荐答案

在Stackoverflow和其他网站上的几篇文章，我终于希望解决这个问题。

I have gone through several articles in Stackoverflow and other sites and i finally wish to address this problem.

   <Style TargetType="TextBox" >
                        <Setter Property="OverridesDefaultStyle" Value="false"/>
                        <Setter Property="VerticalAlignment" Value="Center"/>
                        <Setter Property="HorizontalAlignment" Value="Left"/>
                        <Setter Property="Margin" Value="5,3" />
                        <Style.Triggers>
                            <Trigger Property="Validation.HasError" Value="True">
                                <Setter Property="FocusManager.FocusedElement" Value="{Binding RelativeSource={RelativeSource Self}}"/>
                            </Trigger>
                        </Style.Triggers>
                    </Style>

设置FocusedElement做的伎俩。 :)
这也可以用于通过DataTrigger使用ViewModel中的布尔属性设置焦点，而不是简单的触发器。

Setting FocusedElement did the trick. :) This can also be used to set focus using a boolean property in ViewModel via DataTrigger than a simple trigger.

这篇关于设置焦点到WPF MVVM中的UI控件方式Validation.HasError的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！