基于WPF实现数字框控件
作者：WPF开发者
这篇文章主要介绍了如何利用WPF实现数字框控件，文中的示例代码讲解详细，对我们学习或工作有一定的帮助，需要的小伙伴可以参考一下
WPF 实现数字框控件
框架使用.NET4 至 .NET6；
Visual Studio 2022;
实现代码
1）新增 NumericBox.cs 代码如下:
OnPreviewKeyDown 方法：
- 处理
Enter键：调用DealInputText方法处理输入文本，选择所有文本，并标记事件为已处理。 - 处理向上箭头键：调用
ContinueChangeValue方法增加NumericBox值，并标记事件为已处理。 - 处理向下箭头键：调用
ContinueChangeValue方法减少NumericBox值，并标记事件为已处理。
OnPreviewKeyUp 方法：
处理释放的向上箭头键或向下箭头键：调用 ResetInternal 方法重置 NumericBox 内部状态。
尝试将输入的文本转换为 double 类型的数值。
如果转换成功：
检查转换后的值与当前值是否非常接近，如果是，则不做任何操作。
否则，根据转换后的值和最大值、最小值进行比较：
如果大于最大值，则将值设置为最大值。
如果小于最小值，则将值设置为最小值。
否则，将值设置为转换后的值。
如果转换失败，则将当前值设置回文本框。
Precision 可输入多少小数位。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using System.Windows;
using System.Xml.Linq;
using WPFDevelopers.Utilities;
using System.Windows.Controls;
using WPFDevelopers.Datas;
namespace WPFDevelopers.Controls
{
[DefaultEvent("ValueChanged"), DefaultProperty("Value")]
[TemplatePart(Name = TextBoxTemplateName, Type = typeof(TextBox))]
[TemplatePart(Name = NumericUpTemplateName, Type = typeof(RepeatButton))]
[TemplatePart(Name = NumericDownTemplateName, Type = typeof(RepeatButton))]
public class NumericBox : Control
{
private static readonly Type _typeofSelf = typeof(NumericBox);
private const double DefaultInterval = 1d;
private const int DefaultDelay = 500;
private const string TextBoxTemplateName = "PART_TextBox";
private const string NumericUpTemplateName = "PART_NumericUp";
private const string NumericDownTemplateName = "PART_NumericDown";
private static RoutedCommand _increaseCommand = null;
private static RoutedCommand _decreaseCommand = null;
private TextBox _valueTextBox;
private RepeatButton _repeatUp;
private RepeatButton _repeatDown;
private double _internalLargeChange = DefaultInterval;
private double _intervalValueSinceReset = 0;
private double? _lastOldValue = null;
private bool _isManual;
private bool _isBusy;
static NumericBox()
{
InitializeCommands();
DefaultStyleKeyProperty.OverrideMetadata(_typeofSelf, new FrameworkPropertyMetadata(_typeofSelf));
}
#region Command
private static void InitializeCommands()
{
_increaseCommand = new RoutedCommand("Increase", _typeofSelf);
_decreaseCommand = new RoutedCommand("Decrease", _typeofSelf);
CommandManager.RegisterClassCommandBinding(_typeofSelf, new CommandBinding(_increaseCommand, OnIncreaseCommand, OnCanIncreaseCommand));
CommandManager.RegisterClassCommandBinding(_typeofSelf, new CommandBinding(_decreaseCommand, OnDecreaseCommand, OnCanDecreaseCommand));
}
public static RoutedCommand IncreaseCommand
{
get { return _increaseCommand; }
}
public static RoutedCommand DecreaseCommand
{
get { return _decreaseCommand; }
}
private static void OnIncreaseCommand(object sender, RoutedEventArgs e)
{
var numericBox = sender as NumericBox;
numericBox.ContinueChangeValue(true);
}
private static void OnCanIncreaseCommand(object sender, CanExecuteRoutedEventArgs e)
{
var numericBox = sender as NumericBox;
e.CanExecute = (!numericBox.IsReadOnly && numericBox.IsEnabled && DoubleUtil.LessThan(numericBox.Value, numericBox.Maximum));
}
private static void OnDecreaseCommand(object sender, RoutedEventArgs e)
{
var numericBox = sender as NumericBox;
numericBox.ContinueChangeValue(false);
}
private static void OnCanDecreaseCommand(object sender, CanExecuteRoutedEventArgs e)
{
var numericBox = sender as NumericBox;
e.CanExecute = (!numericBox.IsReadOnly && numericBox.IsEnabled && DoubleUtil.GreaterThan(numericBox.Value, numericBox.Minimum));
}
#endregion
#region RouteEvent
public static readonly RoutedEvent ValueChangedEvent = EventManager.RegisterRoutedEvent("ValueChanged", RoutingStrategy.Bubble, typeof(RoutedPropertyChangedEventHandler<double>), _typeofSelf);
public event RoutedPropertyChangedEventHandler<double> ValueChanged
{
add { AddHandler(ValueChangedEvent, value); }
remove { RemoveHandler(ValueChangedEvent, value); }
}
#endregion
#region Properties
public static readonly DependencyProperty DisabledValueChangedWhileBusyProperty = DependencyProperty.Register("DisabledValueChangedWhileBusy", typeof(bool), _typeofSelf,
new PropertyMetadata(false));
[Category("Common")]
[DefaultValue(true)]
public bool DisabledValueChangedWhileBusy
{
get { return (bool)GetValue(DisabledValueChangedWhileBusyProperty); }
set { SetValue(DisabledValueChangedWhileBusyProperty, value); }
}
public static readonly DependencyProperty IntervalProperty = DependencyProperty.Register("Interval", typeof(double), _typeofSelf,
new FrameworkPropertyMetadata(DefaultInterval, IntervalChanged, CoerceInterval));
[Category("Behavior")]
[DefaultValue(DefaultInterval)]
public double Interval
{
get { return (double)GetValue(IntervalProperty); }
set { SetValue(IntervalProperty, value); }
}
private static object CoerceInterval(DependencyObject d, object value)
{
var interval = (double)value;
return DoubleUtil.IsNaN(interval) ? 0 : Math.Max(interval, 0);
}
private static void IntervalChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var numericBox = (NumericBox)d;
numericBox.ResetInternal();
}
public static readonly DependencyProperty SpeedupProperty = DependencyProperty.Register("Speedup", typeof(bool), _typeofSelf,
new PropertyMetadata(true));
[Category("Common")]
[DefaultValue(true)]
public bool Speedup
{
get { return (bool)GetValue(SpeedupProperty); }
set { SetValue(SpeedupProperty, value); }
}
public static readonly DependencyProperty DelayProperty = DependencyProperty.Register("Delay", typeof(int), _typeofSelf,
new PropertyMetadata(DefaultDelay, null, CoerceDelay));
[DefaultValue(DefaultDelay)]
[Category("Behavior")]
public int Delay
{
get { return (int)GetValue(DelayProperty); }
set { SetValue(DelayProperty, value); }
}
private static object CoerceDelay(DependencyObject d, object value)
{
var delay = (int)value;
return Math.Max(delay, 0);
}
public static readonly DependencyProperty UpDownButtonsWidthProperty = DependencyProperty.Register("UpDownButtonsWidth", typeof(double), _typeofSelf,
new PropertyMetadata(20d));
[Category("Appearance")]
[DefaultValue(20d)]
public double UpDownButtonsWidth
{
get { return (double)GetValue(UpDownButtonsWidthProperty); }
set { SetValue(UpDownButtonsWidthProperty, value); }
}
public static readonly DependencyProperty TextAlignmentProperty = TextBox.TextAlignmentProperty.AddOwner(_typeofSelf);
[Category("Common")]
public TextAlignment TextAlignment
{
get { return (TextAlignment)GetValue(TextAlignmentProperty); }
set { SetValue(TextAlignmentProperty, value); }
}
public static readonly DependencyProperty IsReadOnlyProperty = TextBoxBase.IsReadOnlyProperty.AddOwner(_typeofSelf,
new FrameworkPropertyMetadata(false, FrameworkPropertyMetadataOptions.Inherits, IsReadOnlyPropertyChangedCallback));
[Category("Appearance")]
public bool IsReadOnly
{
get { return (bool)GetValue(IsReadOnlyProperty); }
set { SetValue(IsReadOnlyProperty, value); }
}
private static void IsReadOnlyPropertyChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
if (e.OldValue == e.NewValue || e.NewValue == null)
return;
((NumericBox)d).ToggleReadOnlyMode((bool)e.NewValue);
}
public static readonly DependencyProperty PrecisionProperty = DependencyProperty.Register("Precision", typeof(int?), _typeofSelf,
new PropertyMetadata(null, OnPrecisionChanged, CoercePrecision));
[Category("Common")]
public int? Precision
{
get { return (int?)GetValue(PrecisionProperty); }
set { SetValue(PrecisionProperty, value); }
}
private static object CoercePrecision(DependencyObject d, object value)
{
var precision = (int?)value;
return (precision.HasValue && precision.Value < 0) ? 0 : precision;
}
private static void OnPrecisionChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var numericBox = (NumericBox)d;
var newPrecision = (int?)e.NewValue;
var roundValue = numericBox.CorrectPrecision(newPrecision, numericBox.Value);
if (DoubleUtil.AreClose(numericBox.Value, roundValue))
numericBox.InternalSetText(roundValue);
else
numericBox.Value = roundValue;
}
public static readonly DependencyProperty MinimumProperty = DependencyProperty.Register("Minimum", typeof(double), _typeofSelf,
new PropertyMetadata(double.MinValue, OnMinimumChanged));
[Category("Common")]
public double Minimum
{
get { return (double)GetValue(MinimumProperty); }
set { SetValue(MinimumProperty, value); }
}
private static void OnMinimumChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var numericBox = (NumericBox)d;
numericBox.CoerceValue(MaximumProperty, numericBox.Maximum);
numericBox.CoerceValue(ValueProperty, numericBox.Value);
}
public static readonly DependencyProperty MaximumProperty = DependencyProperty.Register("Maximum", typeof(double), _typeofSelf,
new PropertyMetadata(double.MaxValue, OnMaximumChanged, CoerceMaximum));
[Category("Common")]
public double Maximum
{
get { return (double)GetValue(MaximumProperty); }
set { SetValue(MaximumProperty, value); }
}
private static object CoerceMaximum(DependencyObject d, object value)
{
var minimum = ((NumericBox)d).Minimum;
var val = (double)value;
return DoubleUtil.LessThan(val, minimum) ? minimum : val;
}
private static void OnMaximumChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var numericBox = (NumericBox)d;
numericBox.CoerceValue(ValueProperty, numericBox.Value);
}
public static readonly DependencyProperty ValueProperty = DependencyProperty.Register("Value", typeof(double), _typeofSelf,
new FrameworkPropertyMetadata(0d, FrameworkPropertyMetadataOptions.BindsTwoWayByDefault, OnValueChanged, CoerceValue));
[Category("Common")]
public double Value
{
get { return (double)GetValue(ValueProperty); }
set { SetValue(ValueProperty, value); }
}
private static object CoerceValue(DependencyObject d, object value)
{
var numericBox = (NumericBox)d;
var val = (double)value;
if (DoubleUtil.LessThan(val, numericBox.Minimum))
return numericBox.Minimum;
if (DoubleUtil.GreaterThan(val, numericBox.Maximum))
return numericBox.Maximum;
return numericBox.CorrectPrecision(numericBox.Precision, val);
}
private static void OnValueChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var numericBox = (NumericBox)d;
numericBox.OnValueChanged((double)e.OldValue, (double)e.NewValue);
}
#endregion
#region Virtual
protected virtual void OnValueChanged(double oldValue, double newValue)
{
InternalSetText(newValue);
InvalidateRequerySuggested(newValue);
if ((!_isBusy || !DisabledValueChangedWhileBusy) && !DoubleUtil.AreClose(oldValue, newValue))
{
RaiseEvent(new TextBoxValueChangedEventArgs<double>(oldValue, newValue, _isManual, _isBusy, ValueChangedEvent));
}
_isManual = false;
}
#endregion
#region Override
public override void OnApplyTemplate()
{
base.OnApplyTemplate();
UnsubscribeEvents();
_valueTextBox = GetTemplateChild(TextBoxTemplateName) as TextBox;
_repeatUp = GetTemplateChild(NumericUpTemplateName) as RepeatButton;
_repeatDown = GetTemplateChild(NumericDownTemplateName) as RepeatButton;
if (_valueTextBox == null || _repeatUp == null || _repeatDown == null)
{
throw new NullReferenceException(string.Format("You have missed to specify {0}, {1} or {2} in your template", NumericUpTemplateName, NumericDownTemplateName, TextBoxTemplateName));
}
_repeatUp.PreviewMouseUp += OnRepeatButtonPreviewMouseUp;
_repeatDown.PreviewMouseUp += OnRepeatButtonPreviewMouseUp;
ToggleReadOnlyMode(IsReadOnly);
OnValueChanged(Value, Value);
}
protected override void OnGotFocus(RoutedEventArgs e)
{
base.OnGotFocus(e);
if (Focusable && !IsReadOnly)
{
Focused();
SelectAll();
}
}
protected override void OnPreviewMouseWheel(MouseWheelEventArgs e)
{
base.OnPreviewMouseWheel(e);
if (e.Delta != 0 && (IsFocused || _valueTextBox.IsFocused))
ContinueChangeValue(e.Delta >= 0, false);
}
protected override void OnPreviewKeyDown(KeyEventArgs e)
{
base.OnPreviewKeyDown(e);
switch (e.Key)
{
case Key.Enter:
DealInputText(_valueTextBox.Text);
SelectAll();
e.Handled = true;
break;
case Key.Up:
ContinueChangeValue(true);
e.Handled = true;
break;
case Key.Down:
ContinueChangeValue(false);
e.Handled = true;
break;
}
}
protected override void OnPreviewKeyUp(KeyEventArgs e)
{
base.OnPreviewKeyUp(e);
switch (e.Key)
{
case Key.Down:
case Key.Up:
ResetInternal();
break;
}
}
#endregion
#region Event
private void OnRepeatButtonPreviewMouseUp(object sender, MouseButtonEventArgs e)
{
ResetInternal();
}
private void OnPreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
if (Focusable && !IsReadOnly && !_valueTextBox.IsKeyboardFocusWithin)
{
e.Handled = true;
Focused();
SelectAll();
}
}
private void OnTextBoxLostFocus(object sender, RoutedEventArgs e)
{
var tb = (TextBox)sender;
DealInputText(tb.Text);
}
private void OnValueTextBoxPaste(object sender, DataObjectPastingEventArgs e)
{
var textBox = (TextBox)sender;
var textPresent = textBox.Text;
if (!e.SourceDataObject.GetDataPresent(DataFormats.Text, true))
return;
var text = e.SourceDataObject.GetData(DataFormats.Text) as string;
var newText = string.Concat(textPresent.Substring(0, textBox.SelectionStart), text, textPresent.Substring(textBox.SelectionStart + textBox.SelectionLength));
double number;
if (!double.TryParse(newText, out number))
e.CancelCommand();
}
#endregion
#region Private
private void UnsubscribeEvents()
{
if (_valueTextBox != null)
{
_valueTextBox.LostFocus -= OnTextBoxLostFocus;
_valueTextBox.PreviewMouseLeftButtonDown -= OnPreviewMouseLeftButtonDown;
DataObject.RemovePastingHandler(_valueTextBox, OnValueTextBoxPaste);
}
if (_repeatUp != null)
_repeatUp.PreviewMouseUp -= OnRepeatButtonPreviewMouseUp;
if (_repeatDown != null)
_repeatDown.PreviewMouseUp -= OnRepeatButtonPreviewMouseUp;
}
private void Focused()
{
_valueTextBox?.Focus();
}
private void SelectAll()
{
_valueTextBox?.SelectAll();
}
private void DealInputText(string inputText)
{
double convertedValue;
if (double.TryParse(inputText, out convertedValue))
{
if (DoubleUtil.AreClose(Value, convertedValue))
{
InternalSetText(Value);
return;
}
_isManual = true;
if (convertedValue > Maximum)
{
if (DoubleUtil.AreClose(Value, Maximum))
OnValueChanged(Value, Value);
else
Value = Maximum;
}
else if (convertedValue < Minimum)
{
if (DoubleUtil.AreClose(Value, Minimum))
OnValueChanged(Value, Value);
else
Value = Minimum;
}
else
Value = convertedValue;
}
else
InternalSetText(Value);
}
private void MoveFocus()
{
var request = new TraversalRequest((Keyboard.Modifiers & ModifierKeys.Shift) == ModifierKeys.Shift ? FocusNavigationDirection.Previous : FocusNavigationDirection.Next);
var elementWithFocus = Keyboard.FocusedElement as UIElement;
elementWithFocus?.MoveFocus(request);
}
private void ToggleReadOnlyMode(bool isReadOnly)
{
if (_valueTextBox == null)
return;
if (isReadOnly)
{
_valueTextBox.LostFocus -= OnTextBoxLostFocus;
_valueTextBox.PreviewMouseLeftButtonDown -= OnPreviewMouseLeftButtonDown;
DataObject.RemovePastingHandler(_valueTextBox, OnValueTextBoxPaste);
}
else
{
_valueTextBox.LostFocus += OnTextBoxLostFocus;
_valueTextBox.PreviewMouseLeftButtonDown += OnPreviewMouseLeftButtonDown;
DataObject.AddPastingHandler(_valueTextBox, OnValueTextBoxPaste);
}
}
private void InternalSetText(double newValue)
{
var text = newValue.ToString(GetPrecisionFormat());
if (_valueTextBox != null && !Equals(text, _valueTextBox.Text))
_valueTextBox.Text = text;
}
private string GetPrecisionFormat()
{
return Precision.HasValue == false
? "g"
: (Precision.Value == 0
? "#0"
: ("#0.0" + string.Join("", Enumerable.Repeat("#", Precision.Value - 1))));
}
private void CoerceValue(DependencyProperty dp, object localValue)
{
SetCurrentValue(dp, localValue);
CoerceValue(dp);
}
private double CorrectPrecision(int? precision, double originValue)
{
return Math.Round(originValue, precision ?? 0, MidpointRounding.AwayFromZero);
}
private void ContinueChangeValue(bool isIncrease, bool isContinue = true)
{
if (IsReadOnly || !IsEnabled)
return;
if (isIncrease && DoubleUtil.LessThan(Value, Maximum))
{
if (!_isBusy && isContinue)
{
_isBusy = true;
if (DisabledValueChangedWhileBusy)
_lastOldValue = Value;
}
_isManual = true;
Value = (double)CoerceValue(this, Value + CalculateInterval(isContinue));
}
if (!isIncrease && DoubleUtil.GreaterThan(Value, Minimum))
{
if (!_isBusy && isContinue)
{
_isBusy = true;
if (DisabledValueChangedWhileBusy)
_lastOldValue = Value;
}
_isManual = true;
Value = (double)CoerceValue(this, Value - CalculateInterval(isContinue));
}
}
private double CalculateInterval(bool isContinue = true)
{
if (!Speedup || !isContinue)
return Interval;
if (DoubleUtil.GreaterThan((_intervalValueSinceReset += _internalLargeChange), _internalLargeChange * 100))
_internalLargeChange *= 10;
return _internalLargeChange;
}
private void ResetInternal()
{
_internalLargeChange = Interval;
_intervalValueSinceReset = 0;
_isBusy = false;
if (_lastOldValue.HasValue)
{
_isManual = true;
OnValueChanged(_lastOldValue.Value, Value);
_lastOldValue = null;
}
}
private void InvalidateRequerySuggested(double value)
{
if (_repeatUp == null || _repeatDown == null)
return;
if (DoubleUtil.AreClose(value, Maximum) && _repeatUp.IsEnabled
|| DoubleUtil.AreClose(value, Minimum) && _repeatDown.IsEnabled)
CommandManager.InvalidateRequerySuggested();
else
{
if (!_repeatUp.IsEnabled || !_repeatDown.IsEnabled)
CommandManager.InvalidateRequerySuggested();
}
}
#endregion
}
}2）新增 NumericBox.xaml 代码如下:
- 上下按钮部分使用了一个垂直的
Grid，其中包含三个行定义。第一行是上按钮，第二行是一个高度为1的占位行，第三行是下按钮。 - 上按钮和下按钮都是
RepeatButton类型，并分别命名为PART_NumericUp和PART_NumericDown。它们分别与controls:NumericBox.IncreaseCommand和controls:NumericBox.DecreaseCommand命令关联。 - 样式的触发器部分定义了一个触发条件，当
UpDownButtonsWidth属性的值为0时，将隐藏上下按钮。
<ResourceDictionary
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:controls="clr-namespace:WPFDevelopers.Controls">
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="Basic/ControlBasic.xaml" />
</ResourceDictionary.MergedDictionaries>
<Style
x:Key="WD.NumericBox"
BasedOn="{StaticResource WD.ControlBasicStyle}"
TargetType="{x:Type controls:NumericBox}">
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Disabled" />
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Disabled" />
<Setter Property="BorderThickness" Value="1" />
<Setter Property="BorderBrush" Value="{DynamicResource WD.BaseSolidColorBrush}" />
<Setter Property="Background" Value="{DynamicResource WD.BackgroundSolidColorBrush}" />
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
<Setter Property="VerticalContentAlignment" Value="Center" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="Padding" Value="{StaticResource WD.DefaultPadding}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type controls:NumericBox}">
<controls:SmallPanel Width="{TemplateBinding Width}" Height="{TemplateBinding Height}">
<Border
x:Name="PART_Border"
Background="{TemplateBinding Background}"
BorderBrush="{TemplateBinding BorderBrush}"
BorderThickness="{TemplateBinding BorderThickness}"
CornerRadius="{Binding Path=(helpers:ElementHelper.CornerRadius), RelativeSource={RelativeSource TemplatedParent}}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<TextBox
x:Name="PART_TextBox"
MinHeight="{TemplateBinding MinHeight}"
Padding="{TemplateBinding Padding}"
HorizontalAlignment="Stretch"
VerticalAlignment="Center"
HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}"
VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"
Background="{x:Null}"
BorderThickness="0"
FocusVisualStyle="{x:Null}"
Focusable="{TemplateBinding Focusable}"
FontFamily="{TemplateBinding FontFamily}"
FontSize="{TemplateBinding FontSize}"
Foreground="{TemplateBinding Foreground}"
HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}"
InputMethod.IsInputMethodEnabled="False"
IsReadOnly="{TemplateBinding IsReadOnly}"
IsTabStop="{TemplateBinding IsTabStop}"
SelectionBrush="{DynamicResource WD.WindowBorderBrushSolidColorBrush}"
SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}"
Style="{x:Null}"
TabIndex="{TemplateBinding TabIndex}"
TextAlignment="{TemplateBinding TextAlignment}"
VerticalScrollBarVisibility="{TemplateBinding ScrollViewer.VerticalScrollBarVisibility}" />
<Grid Grid.Column="1" Width="{TemplateBinding UpDownButtonsWidth}">
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition Height="1" />
<RowDefinition />
</Grid.RowDefinitions>
<RepeatButton
x:Name="PART_NumericUp"
Grid.Row="0"
Margin="0,1,1,0"
Command="{x:Static controls:NumericBox.IncreaseCommand}"
Delay="{TemplateBinding Delay}"
IsTabStop="False"
Style="{StaticResource WD.DefaultRepeatButton}">
<controls:PathIcon Kind="ChevronUp" Style="{StaticResource WD.MiniPathIcon}" />
</RepeatButton>
<RepeatButton
x:Name="PART_NumericDown"
Grid.Row="2"
Margin="0,0,1,1"
Command="{x:Static controls:NumericBox.DecreaseCommand}"
Delay="{TemplateBinding Delay}"
IsTabStop="False">
<controls:PathIcon Kind="ChevronDown" Style="{StaticResource WD.MiniPathIcon}" />
</RepeatButton>
</Grid>
</Grid>
</Border>
</controls:SmallPanel>
<ControlTemplate.Triggers>
<Trigger Property="UpDownButtonsWidth" Value="0">
<Setter TargetName="PART_NumericDown" Property="Visibility" Value="Collapsed" />
<Setter TargetName="PART_NumericUp" Property="Visibility" Value="Collapsed" />
</Trigger>
<Trigger Property="IsReadOnly" Value="True">
<Setter Property="Focusable" Value="False" />
<Setter TargetName="PART_NumericDown" Property="IsEnabled" Value="False" />
<Setter TargetName="PART_NumericUp" Property="IsEnabled" Value="False" />
</Trigger>
<Trigger Property="IsMouseOver" Value="True">
<Setter Property="BorderBrush" Value="{DynamicResource WD.PrimaryNormalSolidColorBrush}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style BasedOn="{StaticResource WD.NumericBox}" TargetType="{x:Type controls:NumericBox}" />
</ResourceDictionary>3）示例 代码如下:
<wd:NumericBox Width="100" Maximum="100" Minimum="0" /> <wd:NumericBox Width="100" Margin="10,0" Maximum="1000" Minimum="100" UpDownButtonsWidth="0" /> <wd:NumericBox Width="100" Precision="3" />
效果图
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