Question

我试图修改基于TextBox的CustomControl的样式，我已经基本上成功了。我试图完成的最后一件事是在禁用时使其昏暗。我已经成功地将其工作，但颜色已关闭，它们在禁用时与标准TextBox不匹配。

本机TextBox的适当颜色是什么和/或如何访问本机TextBox的默认样式以复制适当的语法？ MSDN上的示例似乎不是标准样式？我还看到过使用Blend获取默认样式的建议？这似乎不起作用，由于某种原因，这种方法在我的项目中创建了对PresentationFramework.Classic的引用，并为我提供了一个看起来像Windows窗体（沉没边框等）的TextBox。

Generic.xaml

<Style x:Key="{x:Type l:CustomTextBox}" BasedOn="{StaticResource {x:Type TextBox}}" TargetType="{x:Type l:CustomTextBox}">
    <Setter Property="SnapsToDevicePixels" Value="True" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type l:CustomTextBox}">
                <Border x:Name="Border" Background="{TemplateBinding Background}" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}">
                    <ScrollViewer x:Name="PART_ContentHost" Margin="2" />
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsEnabled" Value="False">
                        <!-- The background does change, but the color does not match native disabled TextBoxes. -->
                        <Setter Property="Background" TargetName="Border" Value="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" />
                        <Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}" />
                    </Trigger>
                    <!-- Additional triggers, none of which modify the Background. -->
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Answer 1

我在博客上发现了这个，它帮助了我。它会将指定元素的模板写入控制台。它需要在创建窗口后执行，例如已加载的事件。

var stringBuilder = new StringBuilder();

var xmlSettings = new XmlWriterSettings();
xmlSettings.Indent = true;

using (XmlWriter xmlWriter = XmlWriter.Create(stringBuilder, xmlSettings))
    XamlWriter.Save(this.textBox.Template, xmlWriter);

Console.WriteLine(stringBuilder.ToString());

<强>输出

<?xml version="1.0" encoding="utf-16"?>
<ControlTemplate TargetType="TextBoxBase" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:s="clr-namespace:System;assembly=mscorlib">
  <Border BorderThickness="{TemplateBinding Border.BorderThickness}" BorderBrush="{TemplateBinding Border.BorderBrush}" Background="{TemplateBinding Panel.Background}" Name="border" SnapsToDevicePixels="True">
    <ScrollViewer HorizontalScrollBarVisibility="Hidden" VerticalScrollBarVisibility="Hidden" Name="PART_ContentHost" Focusable="False" />
  </Border>
  <ControlTemplate.Triggers>
    <Trigger Property="UIElement.IsEnabled">
      <Setter Property="UIElement.Opacity" TargetName="border">
        <Setter.Value>
          <s:Double>0.56</s:Double>
        </Setter.Value>
      </Setter>
      <Trigger.Value>
        <s:Boolean>False</s:Boolean>
      </Trigger.Value>
    </Trigger>
    <Trigger Property="UIElement.IsMouseOver">
      <Setter Property="Border.BorderBrush" TargetName="border">
        <Setter.Value>
          <SolidColorBrush>#FFC5DAED</SolidColorBrush>
        </Setter.Value>
      </Setter>
      <Trigger.Value>
        <s:Boolean>True</s:Boolean>
      </Trigger.Value>
    </Trigger>
    <Trigger Property="UIElement.IsKeyboardFocused">
      <Setter Property="Border.BorderBrush" TargetName="border">
        <Setter.Value>
          <SolidColorBrush>#FFB5CFE7</SolidColorBrush>
        </Setter.Value>
      </Setter>
      <Trigger.Value>
        <s:Boolean>True</s:Boolean>
      </Trigger.Value>
    </Trigger>
  </ControlTemplate.Triggers>
</ControlTemplate>

生成的模板不是我的预期，没有引用SystemColor的？但是将Opacity添加到我现有的控件确实修复了我原来的行为，所以我很满意它的结果。如果有人可以详细说明，我很乐意看到一些额外的评论。

查看元素的默认样式（TextBox）

1 个答案: