文本框只读“；“开/关”；介于；“双击并失去焦点事件”；在wpf中

我有一个类似下面xaml的控件，启用了只读

          <TextBox  Text="{Binding Name,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"  Background="Transparent" IsReadOnly="True" BorderThickness="0" TextWrapping="Wrap" >   

现在，当我双击这个文本框时，我应该能够输入一个文本。 只读属性应变为false

如果我移动到此文本框以外的窗口中的其他项目，则该文本框应再次变为只读

---

我试着用触发器来做。但是没有得到正确的暗示。这里有人能帮我吗？

你可以通过两个事件来实现，鼠标双击和失去焦点

<Grid>
    <TextBox IsReadOnly="True"
             MouseDoubleClick="TextBox_MouseDoubleClick"
             LostFocus="TextBox_LostFocus"/>
</Grid>

---

您可以使用

System.Windows.Interactivity

assembly（）来完成此操作

第一：创建帮助器类以设置属性：

public class SetterAction : TriggerAction<DependencyObject>
{
    public SetterAction()
    {
        Setters = new List<Setter>();
    }

    public List<Setter> Setters { get; set; }

    protected override void Invoke(object parameter)
    {
        foreach (var item in Setters)
        {
            AssociatedObject.SetValue(item.Property, item.Value);
        }
    }
}

---

您可以使用Style和EventTrigger来实现这一点

<Window xmlns:sys="clr-namespace:System;assembly=mscorlib" ...>
    <Window.Resource>
        <Style x:Key="MyTextBoxStyle" TargetType="{x:Type TextBox}">
            <Style.Triggers>
                <EventTrigger RoutedEvent="LostFocus">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames Duration="0"
                                    Storyboard.TargetProperty="(TextBox.IsReadOnly)">
                                    <DiscreteObjectKeyFrame KeyTime="0">
                                        <DiscreteObjectKeyFrame.Value>
                                            <sys:Boolean>True</sys:Boolean>
                                        </DiscreteObjectKeyFrame.Value>
                                    </DiscreteObjectKeyFrame>
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
                <EventTrigger RoutedEvent="MouseDoubleClick">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames Duration="0"
                                       Storyboard.TargetProperty="(TextBox.IsReadOnly)">
                                    <DiscreteObjectKeyFrame KeyTime="0">
                                        <DiscreteObjectKeyFrame.Value>
                                            <sys:Boolean>False</sys:Boolean>
                                        </DiscreteObjectKeyFrame.Value>
                                    </DiscreteObjectKeyFrame>
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
            </Style.Triggers>
        </Style>
    </Window.Resource>
    ...
    <TextBox Style="{StaticResource MyTextBoxStyle}" .../>
</Window>

真的
假的
...

是否希望此文本框仅在失去焦点时启用IsReadonly？此Blend SDK程序集是否已获得许可？@shahulhameed您可以使用此程序集。检查这条线：我试过了。它正在工作。但当我双击文本框时，正常的行为是所有数据都将被选中。在这种方法中，默认情况下光标移动到内容的最后一个元素。但我需要的是正常的光标选择行为。我该怎么做不。但该行为不是我所要求的。我尝试了它，但它给了我以下错误“无法使用“System.Windows.Media.Animation.ObjectAnimationUsingKeyFrames”对“System.Windows.Controls.TextBox”上的“IsReadOnly”属性设置动画。”

<TextBox Text="{Binding Name, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
         Background="Transparent" IsReadOnly="True" BorderThickness="0" TextWrapping="Wrap"
         Height="30" Width="200">
    <i:Interaction.Triggers>
        <i:EventTrigger EventName="MouseDoubleClick">
            <i:EventTrigger.Actions>
                <local:SetterAction>
                    <local:SetterAction.Setters>
                        <Setter Property="TextBox.IsReadOnly" Value="False" />
                        <Setter Property="TextBox.Background" Value="Green" />
                    </local:SetterAction.Setters>
                </local:SetterAction>
            </i:EventTrigger.Actions>
        </i:EventTrigger>
        <i:EventTrigger EventName="LostFocus">
            <i:EventTrigger.Actions>
                <local:SetterAction>
                    <local:SetterAction.Setters>
                        <Setter Property="TextBox.IsReadOnly" Value="True" />
                        <Setter Property="TextBox.Background" Value="Red" />
                    </local:SetterAction.Setters>
                </local:SetterAction>
            </i:EventTrigger.Actions>
        </i:EventTrigger>
    </i:Interaction.Triggers>
</TextBox>

xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"

<Window xmlns:sys="clr-namespace:System;assembly=mscorlib" ...>
    <Window.Resource>
        <Style x:Key="MyTextBoxStyle" TargetType="{x:Type TextBox}">
            <Style.Triggers>
                <EventTrigger RoutedEvent="LostFocus">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames Duration="0"
                                    Storyboard.TargetProperty="(TextBox.IsReadOnly)">
                                    <DiscreteObjectKeyFrame KeyTime="0">
                                        <DiscreteObjectKeyFrame.Value>
                                            <sys:Boolean>True</sys:Boolean>
                                        </DiscreteObjectKeyFrame.Value>
                                    </DiscreteObjectKeyFrame>
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
                <EventTrigger RoutedEvent="MouseDoubleClick">
                    <EventTrigger.Actions>
                        <BeginStoryboard>
                            <Storyboard>
                                <ObjectAnimationUsingKeyFrames Duration="0"
                                       Storyboard.TargetProperty="(TextBox.IsReadOnly)">
                                    <DiscreteObjectKeyFrame KeyTime="0">
                                        <DiscreteObjectKeyFrame.Value>
                                            <sys:Boolean>False</sys:Boolean>
                                        </DiscreteObjectKeyFrame.Value>
                                    </DiscreteObjectKeyFrame>
                                </ObjectAnimationUsingKeyFrames>
                            </Storyboard>
                        </BeginStoryboard>
                    </EventTrigger.Actions>
                </EventTrigger>
            </Style.Triggers>
        </Style>
    </Window.Resource>
    ...
    <TextBox Style="{StaticResource MyTextBoxStyle}" .../>
</Window>