一个奇怪的bug

　　最近在完成一个项目，说白了也就是一个在win7上运行的沙盒程序。于是采用WPF + SurfaceSDK实现相应的功能。使用了WPF原生的Button等控件，可是到了客户机上运行时候控件的样式总是不是非常理想。后来发现是开发环境和运行环境的Windows主题不同造成的问题，所以准备自己写一些控件，这个时候就出现了这个奇怪的问题，在此记录，如有能够“正确解决”的朋友，欢迎留言讨论。

错误描述： “{DependencyProperty.UnsetValue}”不是 Setter 上“System.Windows.Controls.Border.BorderBrush”属性的有效值

详细图片如下：



项目目录如下：



App.xaml

<Application x:Class="WpfApplication_MyButton.App"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
StartupUri="MainWindow.xaml">
<Application.Resources>
<ResourceDictionary>
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="Dictionary1.xaml"/>
</ResourceDictionary.MergedDictionaries>
</ResourceDictionary>
</Application.Resources>
</Application>

Dictionary1.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

<!--自定义颜色-->
<LinearGradientBrush x:Key="LinearGradientBlueBackground" EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF377FED" Offset="0" />
<GradientStop Color="#FF074CC0" Offset="1" />
</LinearGradientBrush>
<!--<Color x:Key="MyBtnHoverBackgroundColor" >#000000</Color>-->
<!--END-->

<Style x:Key="MyWpfButton" TargetType="{x:Type Button}" >
<Setter Property="Background" Value="{StaticResource LinearGradientBlueBackground}"></Setter>
<Setter Property="Foreground" Value="White"></Setter>
<Setter Property="BorderBrush" Value="#000000"></Setter>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Button}">
<Border x:Name="border" BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}"
SnapsToDevicePixels="true" CornerRadius="3,3,3,3">
<ContentPresenter x:Name="contentPresenter"
Focusable="False"
HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
Margin="{TemplateBinding Padding}"
RecognizesAccessKey="True"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
VerticalAlignment="{TemplateBinding VerticalContentAlignment}"  />
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsMouseOver" Value="true">
<!--此处使用静态调用会报错误，必须使用具体的值才行-->
<!--<Setter Property="Background" TargetName="border" Value="{StaticResource MyBtnHoverBackgroundColor}"/>-->
<Setter Property="Background" TargetName="border" Value="Red"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</ResourceDictionary>

MainWindow.xaml

<Window x:Class="WpfApplication_MyButton.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<Button Content="Button1" Style="{StaticResource ResourceKey=MyWpfButton}" Height="40" Width="100" Margin="217,40,186,232"></Button>
<Button Content="Button2" HorizontalAlignment="Left" Height="40" Width="100" Margin="34,39,0,232"></Button>
</Grid>
</Window>

MainWindow.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace WpfApplication_MyButton
{
/// <summary>
/// MainWindow.xaml 的交互逻辑
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
}
}

就是Dictionary1.xaml内部注释掉的代码，使用静态资源会报错。即不能使用静态资源去实现，只能使用固定的值。