WPF 自定义用户控件(Content根据加减按钮改变值)

 前端代码：

    <UserControl.Resources><Style x:Key="Num_Button_Style" TargetType="Button"><Setter Property="MinWidth" Value="30" /><Setter Property="Height" Value="35" /><Setter Property="Margin" Value="0" /><Setter Property="VerticalContentAlignment" Value="Center" /><Setter Property="HorizontalContentAlignment" Value="Center" /><Setter Property="FontSize" Value="16" /><Setter Property="Foreground" Value="White" /><Setter Property="BorderThickness" Value="0" /><Setter Property="Background" Value="#12D269" /><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="Button"><Borderx:Name="border"Background="{TemplateBinding Background}"BorderBrush="{TemplateBinding BorderBrush}"BorderThickness="{TemplateBinding BorderThickness}"SnapsToDevicePixels="True"><TextBlockHorizontalAlignment="Center"VerticalAlignment="Center"FontSize="{TemplateBinding FontSize}"Foreground="{TemplateBinding Foreground}"Text="{TemplateBinding Content}" /></Border><ControlTemplate.Triggers><Trigger Property="IsMouseOver" Value="True"><Setter TargetName="border" Property="Background" Value="#4662D9" /></Trigger><Trigger Property="IsPressed" Value="True"><Setter TargetName="border" Property="Background" Value="#4662D9" /></Trigger><Trigger Property="IsEnabled" Value="False"><Setter TargetName="border" Property="Background" Value="#7Ec0EE" /></Trigger></ControlTemplate.Triggers></ControlTemplate></Setter.Value></Setter></Style><Style x:Key="btnStyle" TargetType="Button"><Setter Property="Foreground" Value="#12D269" /><Setter Property="Width" Value="20" /><Setter Property="Height" Value="35" /><Setter Property="Template"><Setter.Value><ControlTemplate TargetType="{x:Type Button}"><BorderName="PART_Background"Background="Transparent"BorderBrush="#12D269"BorderThickness="1,1,0,1"CornerRadius="3,0,0,3"><ContentPresenterHorizontalAlignment="Center"VerticalAlignment="Center"Content="{TemplateBinding ContentControl.Content}" /></Border></ControlTemplate></Setter.Value></Setter><Style.Triggers><Trigger Property="IsMouseOver" Value="True"><Setter Property="FontWeight" Value="Bold" /><Setter Property="Cursor" Value="Hand" /><Setter Property="Foreground" Value="Black" /></Trigger></Style.Triggers></Style>       </UserControl.Resources><Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch"><Grid.ColumnDefinitions><ColumnDefinition Width="1*" /><ColumnDefinition Width="3*" /><ColumnDefinition Width="1*" /></Grid.ColumnDefinitions><Buttonx:Name="up"Grid.Column="2"Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:NumericUpDown}, Path=UpCommand}"CommandParameter="{Binding}"Content="+"Style="{StaticResource btnStyle}"><Button.Template><ControlTemplate TargetType="{x:Type Button}"><BorderName="PART_Background"Background="Transparent"BorderBrush="#12D269"BorderThickness="0,1,1,1"CornerRadius="0,3,3,0"><ContentPresenterHorizontalAlignment="Center"VerticalAlignment="Center"Content="{TemplateBinding ContentControl.Content}" /></Border></ControlTemplate></Button.Template></Button><ButtonGrid.Column="1"MinWidth="50"Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:NumericUpDown}, Path=ConfirmCommand}"CommandParameter="{Binding}"Content="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:NumericUpDown}, Path=Text, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"Style="{StaticResource Num_Button_Style}" /><Buttonx:Name="down"Grid.Column="0"Command="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=local:NumericUpDown}, Path=DownCommand}"CommandParameter="{Binding}"Content="-"Style="{StaticResource btnStyle}" /></Grid></UserControl>

后台注册的 属性及事件：

  public string Text {get { return  (string)GetValue(TextProperty); }set { SetValue(TextProperty, value); }} public static readonly DependencyProperty TextProperty =DependencyProperty.Register("Text", typeof(string), typeof(NumericUpDown), new PropertyMetadata(default(string)));private void Button_PreviewKeyDown(object sender, System.Windows.Input.KeyEventArgs e){if (e.Key == Key.Enter){e.Handled = true; // 禁用回车键}}public object CommandParameter{get{return GetValue(CommandParameterProperty);}set{SetValue(CommandParameterProperty, value);}}public static readonly DependencyProperty CommandParameterProperty =DependencyProperty.Register("CommandParemeter", typeof(object), typeof(NumericUpDown), new PropertyMetadata(default(object)));public ICommand UpCommand{get { return (ICommand)GetValue(UpCommandProperty); }set { SetValue(UpCommandProperty, value); }}public static readonly DependencyProperty UpCommandProperty =DependencyProperty.Register("UpCommand", typeof(ICommand), typeof(NumericUpDown), new PropertyMetadata(default(ICommand)));public ICommand DownCommand{get { return (ICommand)GetValue(DownCommandProperty); }set { SetValue(DownCommandProperty, value); }}public static readonly DependencyProperty DownCommandProperty =DependencyProperty.Register("DownCommand", typeof(ICommand), typeof(NumericUpDown), new PropertyMetadata(default(ICommand)));public ICommand ConfirmCommand{get { return (ICommand)GetValue(ConfirmCommandProperty); }set { SetValue(ConfirmCommandProperty, value); }}public static readonly DependencyProperty ConfirmCommandProperty =DependencyProperty.Register("ConfirmCommand", typeof(ICommand), typeof(NumericUpDown), new PropertyMetadata(default(ICommand)));

功能引用的部分：

<DataGridGrid.Column="0"Height="{Binding ElementName=DGHeight, Path=ActualHeight}"AutoGenerateColumns="False"Background="White"CanUserReorderColumns="False"CanUserResizeColumns="False"CanUserResizeRows="False"HorizontalScrollBarVisibility="Hidden"IsReadOnly="True"ItemsSource="{Binding DataGridList_BindSources, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}"SelectedItem="{Binding SelectBindItem}"SelectionMode="Single"SelectionUnit="FullRow"VerticalScrollBarVisibility="Hidden"><DataGrid.ColumnHeaderStyle><Style TargetType="DataGridColumnHeader"><Setter Property="HorizontalContentAlignment" Value="Center" /><Setter Property="Background" Value="#E8e8e8" /><Setter Property="BorderThickness" Value="1,1,1,1" /><Setter Property="BorderBrush" Value="#ffffff" /><Setter Property="Height" Value="50" /></Style></DataGrid.ColumnHeaderStyle><DataGrid.Columns><DataGridTemplateColumnWidth="50*"MinWidth="50"Header="BindName"><DataGridTemplateColumn.CellTemplate><DataTemplate><Grid><TextBlockHorizontalAlignment="Center"VerticalAlignment="Center"Text="{Binding BindName}" /></Grid></DataTemplate></DataGridTemplateColumn.CellTemplate></DataGridTemplateColumn> <DataGridTemplateColumn Width="550*" Header="Button"> <DataGridTemplateColumn.CellTemplate><DataTemplate><Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch"> <Grid Margin="0,0,10,0"><uc:NumericUpDownConfirmCommand="{Binding DataContext.NumvalueCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=DataGrid}}"DownCommand="{Binding DataContext.NumValueSubCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=DataGrid}}"IsEnabled="{Binding NumvalueBtnEnableLst, Converter={StaticResource ButtonEnable}, ConverterParameter=Numvalue_ADD, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"Text="{Binding Numvalue, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}"UpCommand="{Binding DataContext.NumvalueAddCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=DataGrid}}" /></Grid></Grid></DataTemplate></DataGridTemplateColumn.CellTemplate></DataGridTemplateColumn></DataGrid.Columns></DataGrid>