Question

我会尝试在Windows应用中创建用户控件。我试着输入这段代码：

public double Minimum
{
    get { return (double)GetValue(MinimumProperty); }
    set { SetValue(MinimumProperty, value); }
}

public static readonly DependencyProperty MinimumProperty =
    DependencyProperty.Register("Minimum", typeof(double), typeof(RangeSlider), new UIPropertyMetadata(0d));

public double LowerValue
{
    get { return (double)GetValue(LowerValueProperty); }
    set { SetValue(LowerValueProperty, value); }
}

public static readonly DependencyProperty LowerValueProperty =
    DependencyProperty.Register("LowerValue", typeof(double), typeof(RangeSlider), new UIPropertyMetadata(0d));

public double UpperValue
{
    get { return (double)GetValue(UpperValueProperty); }
    set { SetValue(UpperValueProperty, value); }
}

public static readonly DependencyProperty UpperValueProperty =
    DependencyProperty.Register("UpperValue", typeof(double), typeof(RangeSlider), new UIPropertyMetadata(0d));

public double Maximum
{
    get { return (double)GetValue(MaximumProperty); }
    set { SetValue(MaximumProperty, value); }
}

public static readonly DependencyProperty MaximumProperty =
    DependencyProperty.Register("Maximum", typeof(double), typeof(RangeSlider), new UIPropertyMetadata(1d));

然后我插入了xaml控件，所以：

<UserControl
    x:Class="Doppio_Cursore.MyUserControl1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:Doppio_Cursore"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d"
    d:DesignHeight="300"
    d:DesignWidth="400"
    x:name= "root">

    <Grid>
        <Slider x:Name="LowerSlider"
        Minimum="{Binding ElementName=root, Path=Minimum}"
        Maximum="{Binding ElementName=root, Path=Maximum}"
        Value="{Binding ElementName=root, Path=LowerValue}" />

        <Slider x:Name="UpperSlider"
        Minimum="{Binding ElementName=root, Path=Minimum}"
        Maximum="{Binding ElementName=root, Path=Maximum}"
        Value="{Binding ElementName=root, Path=UpperValue}" />

    </Grid>

</UserControl>

我相信使用此代码如果我没有弄错，我应该看到一个滑块滑块，不是吗？相反，我得到一个带有单个滑块的简单滑块。我哪里错了？

如何用2检查创建一个控件滑块？

0 个答案: