标签：控件 自定义 DependencyProperty double UpDownNumeric Value typeof WPF public
Winform有这个控件，WPF却没有，自己做一个吧。。
先看看效果
控件代码
1 [TemplatePart(Name = "Part_UpRepeatButton", Type = typeof(RepeatButton))]
2 [TemplatePart(Name = "Part_DownRepeatButton", Type = typeof(RepeatButton))]
3 [TemplatePart(Name = "Part_ValueContentPresenter", Type = typeof(ContentPresenter))]
4 public class UpDownNumeric : Control
5 {
6 // Using a DependencyProperty as the backing store for Increment. This enables animation, styling, binding, etc...
7 public static readonly DependencyProperty IncrementProperty =
8 DependencyProperty.Register("Increment", typeof(double), typeof(UpDownNumeric), new PropertyMetadata(1d));
9
10 // Using a DependencyProperty as the backing store for MaxValue. This enables animation, styling, binding, etc...
11 public static readonly DependencyProperty MaxValueProperty =
12 DependencyProperty.Register("MaxValue", typeof(double), typeof(UpDownNumeric), new PropertyMetadata(100d));
13
14 // Using a DependencyProperty as the backing store for MinValue. This enables animation, styling, binding, etc...
15 public static readonly DependencyProperty MinValueProperty =
16 DependencyProperty.Register("MinValue", typeof(double), typeof(UpDownNumeric), new PropertyMetadata(0d));
17
18 // Using a DependencyProperty as the backing store for Value. This enables animation, styling, binding, etc...
19 public static readonly DependencyProperty ValueProperty =
20 DependencyProperty.Register("Value", typeof(double), typeof(UpDownNumeric), new FrameworkPropertyMetadata(0d));
21
22 public double Increment
23 {
24 get { return (double)GetValue(IncrementProperty); }
25 set { SetValue(IncrementProperty, value); }
26 }
27
28 public double MaxValue
29 {
30 get { return (double)GetValue(MaxValueProperty); }
31 set { SetValue(MaxValueProperty, value); }
32 }
33
34 public double MinValue
35 {
36 get { return (double)GetValue(MinValueProperty); }
37 set { SetValue(MinValueProperty, value); }
38 }
39
40 public double Value
41 {
42 get { return (double)GetValue(ValueProperty); }
43 set { SetValue(ValueProperty, value); }
44 }
45
46 static UpDownNumeric()
47 {
48 DefaultStyleKeyProperty.OverrideMetadata(typeof(UpDownNumeric), new FrameworkPropertyMetadata(typeof(UpDownNumeric)));
49 }
50
51 public override void OnApplyTemplate()
52 {
53 //样式应用这里绕了个大弯，开始以为数字呈现应该用TextBox,结果TextBox的Text属性无法绑定Value值，类型不统一
54 //后面把内容控件换成了ContentControl,解决了问题
55 base.OnApplyTemplate();
56 var up = GetTemplateChild("Part_UpRepeatButton") as RepeatButton;
57 var down = GetTemplateChild("Part_DownRepeatButton") as RepeatButton;
58 up.Click += (s, e) =>
59 {
60 if (Value >= MaxValue)
61 {
62 Value = MaxValue;
63 }
64 else
65 {
66 Value += Increment;
67 }
68 };
69 down.Click += (s, e) =>
70 {
71 if (Value <= MinValue)
72 {
73 Value = MinValue;
74 }
75 else
76 {
77 Value -= Increment;
78 }
79 };
80 }
81 }
样式代码
1 <Style TargetType="{x:Type local:UpDownNumeric}">
2
3 <Setter Property="Template">
4 <Setter.Value>
5 <ControlTemplate TargetType="{x:Type local:UpDownNumeric}">
6 <Grid Height="{TemplateBinding Height}">
7 <Grid.ColumnDefinitions>
8 <ColumnDefinition Width="8*"/>
9 <ColumnDefinition Width="2*"/>
10 </Grid.ColumnDefinitions>
11 <Border
12 Grid.Column="0"
13 BorderBrush="Gray"
14 BorderThickness=".5">
15 <ContentControl
16 x:Name="Part_ValueContentPresenter"
17 VerticalAlignment="Center"
18 Content="{TemplateBinding Value}"
19 FontSize="{TemplateBinding FontSize}"/>
20 </Border>
21 <Grid Grid.Column="1">
22 <Grid.RowDefinitions>
23 <RowDefinition Height="*"/>
24 <RowDefinition Height="*"/>
25 </Grid.RowDefinitions>
26 <RepeatButton
27 x:Name="Part_UpRepeatButton"
28 Grid.Row="0"
29 Padding="0"
30 HorizontalContentAlignment="Center"
31 VerticalContentAlignment="Center"
32 Content="+"/>
33 <RepeatButton
34 x:Name="Part_DownRepeatButton"
35 Grid.Row="1"
36 Padding="0"
37 HorizontalContentAlignment="Center"
38 VerticalContentAlignment="Center"
39 Content="-"/>
40 </Grid>
41 </Grid>
42 </ControlTemplate>
43 </Setter.Value>
44 </Setter>
45 </Style>
使用
1 <Window
2 x:Class="MvvmToolkit学习.MainWindow"
3 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
4 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
5 xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
6 xmlns:local="clr-namespace:MvvmToolkit学习"
7 xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
8 Title="MainWindow"
9 Width="800"
10 Height="600"
11 d:DataContext="{d:DesignInstance Type=local:TestViewModel}"
12 mc:Ignorable="d">
13 <Grid>
14 <StackPanel
15 HorizontalAlignment="Center"
16 VerticalAlignment="Center"
17 Orientation="Vertical">
18 <local:UpDownNumeric
19 Width="200"
20 Height="70"
21 VerticalAlignment="Center"
22 FontSize="25"
23 Increment="2"
24 MaxValue="10"
25 MinValue="-10"
26 Value="5"/>
27 </StackPanel>
28 </Grid>
29 </Window>
标签：控件,自定义,DependencyProperty,double,UpDownNumeric,Value,typeof,WPF,public 来源： https://www.cnblogs.com/AtTheMoment/p/16066583.html
本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享； 2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关； 3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关； 4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除； 5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。