在WPF中具有良好的NumericUpDown等价物？

在WPF中，NumericUpDown 控件没有直接的等价物。但是，您可以使用其他控件组合来实现类似的功能。以下是一个简单的示例，展示了如何使用Spinner和TextBox控件来创建一个类似于NumericUpDown的控件：

首先，在XAML文件中添加所需的命名空间：

xmlns:local="clr-namespace:WpfApplication1"

然后，创建一个自定义控件，包含一个Spinner和一个TextBox：

<UserControl x:Class="WpfApplication1.NumericUpDown"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
             xmlns:local="clr-namespace:WpfApplication1"
             mc:Ignorable="d"
             d:DesignHeight="30" d:DesignWidth="100">
    <Grid>
        <Grid.ColumnDefinitions>
           <ColumnDefinition Width="*"/>
           <ColumnDefinition Width="Auto"/>
        </Grid.ColumnDefinitions>
       <TextBox x:Name="txtValue" Text="{Binding Value, RelativeSource={RelativeSource AncestorType=UserControl}}" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"/>
        <Spinner x:Name="spinner" Grid.Column="1" HorizontalAlignment="Right" VerticalAlignment="Stretch" Width="20" Increment="{Binding Increment, RelativeSource={RelativeSource AncestorType=UserControl}}" Maximum="{Binding Maximum, RelativeSource={RelativeSource AncestorType=UserControl}}" Minimum="{Binding Minimum, RelativeSource={RelativeSource AncestorType=UserControl}}" Value="{Binding Value, RelativeSource={RelativeSource AncestorType=UserControl}}"/>
    </Grid>
</UserControl>

在代码隐藏文件中，添加所需的依赖属性和事件处理程序：

using System.Windows;
using System.Windows.Controls;

namespace WpfApplication1
{
    public partial class NumericUpDown : UserControl
    {
        public static readonly DependencyProperty ValueProperty = DependencyProperty.Register("Value", typeof(double), typeof(NumericUpDown), new FrameworkPropertyMetadata(0.0, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault));
        public static readonly DependencyProperty IncrementProperty = DependencyProperty.Register("Increment", typeof(double), typeof(NumericUpDown), new FrameworkPropertyMetadata(1.0));
        public static readonly DependencyProperty MaximumProperty = DependencyProperty.Register("Maximum", typeof(double), typeof(NumericUpDown), new FrameworkPropertyMetadata(100.0));
        public static readonly DependencyProperty MinimumProperty = DependencyProperty.Register("Minimum", typeof(double), typeof(NumericUpDown), new FrameworkPropertyMetadata(0.0));

        public double Value
        {
            get { return (double)GetValue(ValueProperty); }
            set { SetValue(ValueProperty, value); }
        }

        public double Increment
        {
            get { return (double)GetValue(IncrementProperty); }
            set { SetValue(IncrementProperty, value); }
        }

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

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

        public NumericUpDown()
        {
            InitializeComponent();
        }
    }
}

现在，您可以在WPF应用程序中使用自定义的NumericUpDown控件。这个控件将提供类似于NumericUpDown的功能，包括数值输入和上下箭头进行增减。

请注意，这只是一个简单的示例，您可能需要根据您的需求进行调整。