Question

i 在我的首饰3中,有习惯控制,有一页称<代码>。 LineStrokeDashArray dp 定义如下:

testControl : Control
{
public DoubleCollection LineStrokeDashArray
{
    get { return (DoubleCollection)GetValue(LineStrokeDashArrayProperty); }
    set { SetValue(LineStrokeDashArrayProperty, value); }
}

public static readonly DependencyProperty LineStrokeDashArrayProperty =
    DependencyProperty.Register("LineStrokeDashArray", typeof(DoubleCollection), typeof(testControl), new PropertyMetadata(default(DoubleCollection)));

}

and in my style and ControlTemplate:

 <Line 
       VerticalAlignment="Center"
       Stretch="Fill"
       Stroke="{TemplateBinding LineStroke}"
       StrokeDashArray="{TemplateBinding LineStrokeDashArray}"
       StrokeEndLineCap="Square"
       StrokeStartLineCap="Square"
       StrokeThickness="{TemplateBinding LineStrokeThickness}"
       X2="1" />

now when i want to use my control like this:

< local:testControl LineStrokeDashArray=2,2”/>

my app crash, i also tried new PropertyMetadata(new DoubleCollection())); and my app still crashing. i dont know why this is happening, and since this is a winui 3 app, there is no more info for crash and i get this :

https://i.stack.imgur.com/aspYB.png”rel=“nofollow noreferer”>。

Update: sample app:

https://github.com/WinUICommunity/files/13761523/App9.zip”rel=“nofollow noreferer”>App9.zip

Answer 1

它由以下人士确定:Shape.StrokeDashArray。财产。

根据我的测验,你不能把<条码>DoubleCollection约束在一个以上的形状上!

Answer 2

您可在单一海关控制范围内,对一个<代码>DoubleCollection至几个ListView进行约束。因此,它似乎对几个<代码>具有约束力。

您可以做的是,为每个<代码>Line建立内部<代码>。

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