WPF Templete & UserControl

1.Xaml 继承Style 用属性BaseOn

2.DataTemplete

<Style TargetType="{x:Type ListBox}">
                        <Setter Property="ItemTemplate">
                            <Setter.Value>
                                <DataTemplate DataType="{x:Type baseModel:FlowCheckDepRole}">
　　　　　　　　　　　　　　　　　　　　　　--摆放各个控件，形成想要的布局
                                    <TextBlock  Margin="10,5,0,0" Text="{Binding SpareName}" Height="25"   Width="210" TextWrapping="Wrap">
                                    </TextBlock>
                                </DataTemplate>
                            </Setter.Value>
                        </Setter>
</Style>

3.ControlTemplete

 <Style TargetType="{x:Type Control}" x:Key="mm">
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate>
                            <Border x:Name="Bd" BorderThickness="1" Background="White">
                                <ScrollViewer x:Name="Sv"/>
                            </Border>
                            <ControlTemplate.Triggers>
                                <Trigger Property="IsMouseOver" Value="True">
                                    <Setter Property="Background" TargetName="Bd" Value="White"/>
                                </Trigger>
                            </ControlTemplate.Triggers>
                        </ControlTemplate>
                        
                    </Setter.Value>
                </Setter>
            </Style>

 4.WindowState = "Maximized" --最大化显示

5.Popup

<Button Background="Green"  x:Name="btn" Click="btn_xianji_Click"/>
                        <Popup x:Name="Pop_bg"  PopupAnimation="Scroll" Width="88" Height="125" PlacementTarget="{Binding ElementName=btn}"  Placement="Bottom" AllowsTransparency="False" StaysOpen="False" IsOpen="True" >
                          
                        </Popup>

cs
Pop_bg.IsOpen = true;

6.依赖属性 静态存储，性能和控件较传统属性都是很大的提升。外部调用时可使用绑定。第二个Typeof(DependencyObject) 实现绑定数据的双向变化。还可以写成所在类名，或所属控件

xmal

  <local:UCButtonWithRedNum  Grid.Row="2" x:Name="btnWaitCheck"
  NumText="{Binding Path=WaitCheckNum,RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=UserControl}}" 
                                  ButtonClick="WaitCheck_Click"/>

cs

public static readonly DependencyProperty WaitCheckNumProperty =
          DependencyProperty.Register("WaitCheckNum", typeof(string), typeof(DependencyObject), new FrameworkPropertyMetadata(OnSelectedItemsChanged

, null)); 

public string WaitCheckNum 
{ 
get => (string)GetValue(WaitCheckNumProperty);
 set => SetValue(WaitCheckNumProperty, value); 
}

 private static void OnSelectedItemsChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            UCMultiSelectComboBox control = (UCMultiSelectComboBox)d;
            control.SelectNodes();
            control.SetText();
        }

7.依赖事件

xmal 如上一个xmal片段中的事件

ButtonClick="WaitCheck_Click"

cs

/// <summary>
/// 点击事件
/// </summary>
public event RoutedEventHandler WaitCheckClick
{
add => AddHandler(WaitCheckClickEvent, value);
remove => RemoveHandler(WaitCheckClickEvent, value);
}

/// <summary>
/// 点击事件
/// </summary>
public static readonly RoutedEvent WaitCheckClickEvent = EventManager.RegisterRoutedEvent(
"WaitCheckClick", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(UCFlowStatus));
private void WaitCheck_Click(object sender, RoutedEventArgs e)
{
　　RoutedEventArgs newEventArgs = new RoutedEventArgs(WaitCheckClickEvent);
　　RaiseEvent(newEventArgs);
}