提示类型初始化失败 有大佬知道是怎么回事吗

public class SizeAdjustChrome : Control {
    static SizeAdjustChrome() {
      FrameworkElement.DefaultStyleKeyProperty.OverrideMetadata(typeof(SizeAdjustChrome), new FrameworkPropertyMetadata(typeof(SizeAdjustChrome)));
    }



    public double GripCornerSize {
      get { return (double)GetValue(GripCornerSizeProperty); }
      set { SetValue(GripCornerSizeProperty, value); }
    }

    // Using a DependencyProperty as the backing store for GripCornerSize.  This enables animation, styling, binding, etc...
    public static readonly DependencyProperty GripCornerSizeProperty = DependencyProperty.Register("GripCornerSize", typeof(double), typeof(SizeAdjustChrome), new PropertyMetadata(7));
}
  <Style TargetType="{x:Type local:SizeAdjustChrome}">
    <Setter Property="Template">
      <Setter.Value>
        <ControlTemplate TargetType="{x:Type local:SizeAdjustChrome}">
          <Grid>

            <Grid Opacity="0" Margin="-7">
              <!--左-->
              <local:SizeAdjustThumb Height="{TemplateBinding GripCornerSize}" Cursor="SizeWE" 
                                   VerticalAlignment="Center" HorizontalAlignment="Left"/>

Height="{TemplateBinding GripCornerSize}"

提示类型初始化失败 有大佬知道是怎么回事吗

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