WPF -- 自定义控件 （UserControl）（二 下）

在自定义控件 （UserControl）（二 上）中转载大神的一篇博文。通过一个UserControl例子主要介绍了User Control后台添加依赖项属性，路由事件以及命令的添加以及使用，这篇我主要介绍一下通过通过项目应用后的一些总结。

首先来分析一段前台代码：

     <ScrollViewer Grid.Row="4" VerticalScrollBarVisibility="Auto" Margin="0,10,0,0">
                    <ItemsControl Margin="-20,0,0,0"   x:Name="ResourceList1" ScrollViewer.HorizontalScrollBarVisibility="Disabled"    Background="Transparent" BorderThickness="0"                                              
                   ItemsSource="{Binding PoliceBinding.MemberInfoData,Converter={StaticResource filterByMemberRoleConverter}, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}">
                        <ItemsControl.ItemTemplate>
                            <DataTemplate>
                                <Grid x:Name="ResourceGrid">
                                    <IMViews:SummaryScoreResource 
                                    UserName="{Binding DataContext.UserName,ElementName=ResourceGrid}" 
                                                        OrgName="{Binding DataContext.OrgName,ElementName=ResourceGrids}" 
                                                        ImageSource="{Binding DataContext.HeadImageSource,ElementName=ResourceGrid}"  
                                                        LoginId="{Binding DataContext.LoginId,ElementName=ResourceGrid}"
                                                        UserId="{Binding DataContext.UserId,ElementName=ResourceGrid}"                                  
                                                        Value="{Binding DataContext.UsersScores,ElementName=ResourceGrid,UpdateSourceTrigger=PropertyChanged}"
                                                        Colors="{Binding TextColor}"
                               ></IMViews:SummaryScoreResource>
                                </Grid>
                            </DataTemplate>
                        </ItemsControl.ItemTemplate>
                        <ItemsControl.ItemsPanel>
                        <ItemsPanelTemplate>
                            <StackPanel  Orientation="Vertical"  ScrollViewer.HorizontalScrollBarVisibility="Disabled"  ScrollViewer.VerticalScrollBarVisibility="Auto" >
                            </StackPanel>
                        </ItemsPanelTemplate>
                    </ItemsControl.ItemsPanel>
                 </ItemsControl>
                </ScrollViewer>

 /// <summary>
        /// 成员对象
        /// </summary>
        public ObservableCollection<MemberInfoModel> MemberInfoData
        {
            get
            {
                return _MemberInfoData??(_MemberInfoData=new ObservableCollection<MemberInfoModel>());
            }

            set
            {
                _MemberInfoData = value; RaisePropertyChanged(() => MemberInfoData); RaisePropertyChanged(() => MemberCount);
                RefreshUser();
            }
        }

MemberInfoModel.cs

using System;using System.Collections.Generic;using System.Linq;using System.Text;using Telewave.CompositeOperations.Model.BusinessModel.Base;using Telewave.CompositeOperations.Model.BusinessModel.UserInfo;namespace Telewave.CompositeOperations.Model.BusinessModel{ public class MemberInfoModel: HeadImgBaseModel { public MemberInfoModel(UserInfoModel model):base() { UserId = model.UserId; LoginId = model.LoginId; UserName = model.Name; HeadImageSource = model.HeadImg; OrgId = model.OrgId; OrgName = model.OrgName; Role = model.Roles; TelNumber = model.Mobile; switch(Role) { case "2": ShowRoles = "指挥员"; break; case "3": ShowRoles = "成员"; break; } } public MemberInfoModel() { } private string _UserId; /// <summary> /// 用户id（GUID） /// </summary> public string UserId { get { return _UserId; } set { _UserId = value;RaisePropertyChanged(() => UserId); } } private string _LoginId; /// <summary> /// 登陆ID（警号） /// </summary> public string LoginId { get { return _LoginId; } set { _LoginId = value; RaisePropertyChanged(() => LoginId); } } private string _Tips; /// <summary> /// /// </summary> public string Tips { get { return _Tips; } set { _Tips = value; RaisePropertyChanged(() => Tips); } } private string _Role; /// <summary> /// 角色 /// </summary> public string Role { get { return _Role; } set { _Role = value; RaisePropertyChanged(() => Role); } } private string _TelNumber; /// <summary> /// 电话 /// </summary> public string TelNumber { get { return _TelNumber; } set { _TelNumber = value; RaisePropertyChanged(() => _TelNumber); } } /// <summary> /// 部门名称 /// </summary> private string _OrgName; public string OrgName { get { return _OrgName; } set { _OrgName = value; RaisePropertyChanged(() => OrgName); } } private string _ShowRoles; /// <summary> /// 作战室角色 /// </summary> public string ShowRoles { get { return _ShowRoles; } set { _ShowRoles = value; RaisePropertyChanged(() => ShowRoles); } } private string _OrgId; /// <summary> /// 部门编号 /// </summary> public string OrgId { get { return _OrgId; } set { _OrgId = value; RaisePropertyChanged(() => OrgId); } } private bool _AllowDelete = true; public bool AllowDelete { get { return _AllowDelete; } set { _AllowDelete = value; RaisePropertyChanged(() => AllowDelete); } } private bool _IsSelected; public bool IsSelected { get { return _IsSelected; } set { _IsSelected = value; RaisePropertyChanged(() => IsSelected); } } private bool _AllowSelected; public bool AllowSelected { get { return _AllowSelected; } set { _AllowSelected = value; RaisePropertyChanged(() => AllowSelected); } } private string _UsersScores="0"; /// <summary> /// 作战室成员打分与成员顺序对应 /// </summary> public string UsersScores { get { return _UsersScores; } set { _UsersScores = value; RaisePropertyChanged(() => UsersScores); } } }}

大概需求就是展示群组人员信息的一个列表。

一般展示列表，首先想到的是用ListBox控件，当然可以实现，但是这里的这个列表中内容较多，还又一个打分图框操作（已实现），用ListBox自定义控件实现起来会比较麻烦，而且这个列表中的一些内容已经有过实现，综合考虑，最后还是用ItemsControl ，通过数据模板展示MemberInfoModel对象，数据模板的内容用到UserControl(用户控件)。

 <IMViews:SummaryScoreResource 
                                    UserName="{Binding DataContext.UserName,ElementName=ResourceGrid}" 
                                                        OrgName="{Binding DataContext.OrgName,ElementName=ResourceGrids}" 
                                                        ImageSource="{Binding DataContext.HeadImageSource,ElementName=ResourceGrid}"  
                                                        LoginId="{Binding DataContext.LoginId,ElementName=ResourceGrid}"
                                                        UserId="{Binding DataContext.UserId,ElementName=ResourceGrid}"                                  
                                                        Value="{Binding DataContext.UsersScores,ElementName=ResourceGrid,UpdateSourceTrigger=PropertyChanged}"
                                                        Colors="{Binding TextColor}"
                               ></IMViews:SummaryScoreResource>

可以看到，数据模板的内容是名为SummaryScoreResource 的一个UserControl,SummaryScoreResource 中的UserName，OrgName等属性都是通过绑定DataContext.UserName,ElementName=ResourceGrid 对应的属性绑定的。

后台操作：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Telewave.CompositeOperations.Views.IMViews
{
    /// <summary>
    /// SummaryScoreResource.xaml 的交互逻辑
    /// </summary>
    public partial class SummaryScoreResource : UserControl
    {
        public SummaryScoreResource()
        {
            InitializeComponent();
        }

        #region 单例

        private static SummaryScoreResource _instance;

        public static SummaryScoreResource Instance
        {
            get
            {
                if (_instance == null)
                {
                    _instance = new SummaryScoreResource();
                }
                return _instance;
            }
        }

        #endregion

        /// <summary>
        ///   姓名
        /// </summary>
        public string UserName
        {
            get { return (string)GetValue(UserNameProperty); }
            set { SetValue(UserNameProperty, value); }
        }

        /// <summary>
        ///   提示信息(部门)
        /// </summary>
        public string OrgName
        {
            get { return (string)GetValue(OrgNameProperty); }
            set { SetValue(OrgNameProperty, value); }
        }
        /// <summary>
        ///   图片路径
        /// </summary>
        public string ImageSource
        {
            get
            {
                return (string)GetValue(ImageSourceProperty);
            }
            set
            {
                SetValue(ImageSourceProperty, value);
            }
        }

        /// <summary>
        /// 登录名（警号)
        /// </summary>
        public string LoginId
        {
            get { return (string)GetValue(LoginIdProperty); }
            set { SetValue(LoginIdProperty, value); }
        }
        /// <summary>
        /// 用户id(guid)
        /// </summary>
        public string UserId
        {
            get { return (string)GetValue(UserIdProperty); }
            set { SetValue(UserIdProperty, value); }
        }

        /// <summary>
        /// 评分间隔值
        /// </summary>
        public string Increment
        {
            get { return (string)GetValue(IncrementProperty); }
            set { SetValue(IncrementProperty, value); }
        }

        public static readonly DependencyProperty IncrementProperty =
     DependencyProperty.Register("Increment", typeof(string), typeof(SummaryScoreResource),
                                 new FrameworkPropertyMetadata(string.Empty,
                                                                      FrameworkPropertyMetadataOptions.AffectsRender));
        /// <summary>
        /// 最大值
        /// </summary>
        public string MaxValue
        {
            get { return (string)GetValue(MaxValueProperty); }
            set { SetValue(MaxValueProperty, value); }
        }

        public static readonly DependencyProperty MaxValueProperty =
     DependencyProperty.Register("MaxValue", typeof(string), typeof(SummaryScoreResource),
                                 new FrameworkPropertyMetadata(string.Empty,
                                                                      FrameworkPropertyMetadataOptions.AffectsRender));

        /// <summary>
        /// 最小值
        /// </summary>
        public string MinValue
        {
            get { return (string)GetValue(MinValueProperty); }
            set { SetValue(MinValueProperty, value); }
        }

        public static readonly DependencyProperty MinValueProperty =
     DependencyProperty.Register("MinValue", typeof(string), typeof(SummaryScoreResource),
                                 new FrameworkPropertyMetadata(string.Empty,
                                                                      FrameworkPropertyMetadataOptions.AffectsRender));
        /// <summary>
        /// 评分值
        /// </summary>
        public string Value
        {
            get { return (string)GetValue(ValueProperty); }
            set { SetValue(ValueProperty, value); }
        }

        public static readonly DependencyProperty ValueProperty =
     DependencyProperty.Register("Value", typeof(string), typeof(SummaryScoreResource),
                                 new FrameworkPropertyMetadata(string.Empty,
                                                                      FrameworkPropertyMetadataOptions.AffectsRender));
        /// <summary>
        /// 状态颜色
        /// </summary>
        public Brush Colors
        {
            get { return (Brush)GetValue(ColorsProperty); }
            set { SetValue(ColorsProperty, value); }
        }

        public static readonly DependencyProperty ColorsProperty = DependencyProperty.Register("Colors"
            , typeof(Brush), typeof(SummaryScoreResource), new FrameworkPropertyMetadata(new SolidColorBrush(Color.FromRgb(40, 139, 225))));

        /// <summary>
        /// 初始评分
        /// </summary>
        public string Score
        {
            get { return (string)GetValue(ScoreProperty); }
            set { SetValue(ScoreProperty, value); }
        }

        public static readonly DependencyProperty ScoreProperty =
     DependencyProperty.Register("Score", typeof(string), typeof(SummaryScoreResource),
                                 new FrameworkPropertyMetadata(string.Empty,
                                                                      FrameworkPropertyMetadataOptions.AffectsRender));

        public static readonly DependencyProperty LoginIdProperty =
            DependencyProperty.Register("LoginId", typeof(string), typeof(SummaryScoreResource),
                                        new FrameworkPropertyMetadata(string.Empty,
                                                                      FrameworkPropertyMetadataOptions.AffectsRender));
        public static readonly DependencyProperty UserIdProperty =
         DependencyProperty.Register("UserId", typeof(string), typeof(SummaryScoreResource),
                                     new FrameworkPropertyMetadata(string.Empty,
                                                                   FrameworkPropertyMetadataOptions.AffectsRender));
        public static readonly DependencyProperty UserNameProperty =
         DependencyProperty.Register("UserName", typeof(string), typeof(SummaryScoreResource), new FrameworkPropertyMetadata(string.Empty,new PropertyChangedCallback(ImageSourcePropertyChangedCallback)));

        public static readonly DependencyProperty ImageSourceProperty =
DependencyProperty.Register("ImageSource", typeof(string), typeof(SummaryScoreResource),
                         new FrameworkPropertyMetadata(string.Empty,
                                                       FrameworkPropertyMetadataOptions.AffectsRender));

        public static readonly DependencyProperty OrgNameProperty =
DependencyProperty.Register("OrgName", typeof(string), typeof(SummaryScoreResource),
                        new FrameworkPropertyMetadata(string.Empty,
                                                      FrameworkPropertyMetadataOptions.AffectsRender));
        private static void ImageSourcePropertyChangedCallback(DependencyObject sender, DependencyPropertyChangedEventArgs arg)
        {
        }

    }
}

SummaryScoreResource.xaml

<UserControl x:Class="Telewave.CompositeOperations.Views.IMViews.SummaryScoreResource"
             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:Telewave.CompositeOperations.Views.IMViews"
             xmlns:converters="clr-namespace:Telewave.CompositeOperations.Converters"
             xmlns:customControl="clr-namespace:Telewave.CompositeOperations.CustomControl"
             xmlns:IMViews="clr-namespace:Telewave.CompositeOperations.Views.IMViews"
             mc:Ignorable="d" 
             d:DesignHeight="80" d:DesignWidth="900">
    <UserControl.Resources>
        <converters:StringToImageConverter x:Key="stringToImageConverter"/>
        <Storyboard x:Key="showControl">
            <DoubleAnimation Storyboard.TargetName="mainGrid" 
                        Storyboard.TargetProperty="Height" 
                        To="70" Duration="0:0:0.5">
            </DoubleAnimation>
            <DoubleAnimation Storyboard.TargetName="mainGrid" 
                        Storyboard.TargetProperty="Width" 
                        To="740" Duration="0:0:0.5">
            </DoubleAnimation>
        </Storyboard>
        <!--<Storyboard x:Key="closeControl">
            <DoubleAnimation Storyboard.TargetName="Grid1" 
                        Storyboard.TargetProperty="Height" 
                        To="0" Duration="0:0:0.5">
            </DoubleAnimation>
            <DoubleAnimation Storyboard.TargetName="Grid1" 
                        Storyboard.TargetProperty="Width" 
                        To="0" Duration="0:0:0.5">
            </DoubleAnimation>
        </Storyboard>-->
        <GeometryGroup x:Key="clipGeometry" FillRule="Nonzero">
            <EllipseGeometry RadiusX="30" RadiusY="30" Center="30,30"></EllipseGeometry>
        </GeometryGroup>
        <ControlTemplate x:Key="SummaryResourceTemplate" TargetType="{x:Type Button}">
            <Grid x:Name="Grid1" Background="Transparent"  >
                <Grid.RowDefinitions>
                    <RowDefinition Height="*"/>
                    <RowDefinition Height="2"/>
                </Grid.RowDefinitions>
                <Grid>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="Auto" />
                    <ColumnDefinition  />
                    <ColumnDefinition  />
                    <ColumnDefinition />
                </Grid.ColumnDefinitions>
                    <Image Source="{Binding Path=ImageSource,RelativeSource={RelativeSource AncestorType=IMViews:SummaryScoreResource},ConverterParameter=/headimg/defaultHeadImg.jpg,Converter={StaticResource stringToImageConverter}}"  
             Height="60" HorizontalAlignment="Center" VerticalAlignment="Center"  
             Name="image1"   
             Stretch="Fill"   
             Width="60"   Margin="30,0,0,0"
             Clip="{StaticResource ResourceKey=clipGeometry}"/>
                    <TextBlock Grid.Column="1"  Margin="-50,0,0,0" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="14px"  Foreground="{Binding DataContext.TextColor,RelativeSource={RelativeSource AncestorType=IMViews:SummaryScoreWindow}}" Text="{Binding Path=UserName,RelativeSource={RelativeSource AncestorType=IMViews:SummaryScoreResource}}">
                </TextBlock>
                    <!--<TextBlock Grid.Column="2"  Text="[网侦]"  HorizontalAlignment="Center" VerticalAlignment="Center"  Margin="-95,0,0,0" >                   
                </TextBlock>-->
                <!--<customControl:NumericUpDown x:Name="numeric" Grid.Column="3"  Increment="{   DataContext.Increment,ElementName=numeric}" MaxValue="{Binding DataContext.MaxValue,ElementName=numeric}" MinValue="{Binding DataContext.MinValue,ElementName=numeric}" Value="{Binding DataContext.Value,ElementName=numeric}"/>-->
                    <customControl:NumericUpDown x:Name="numeric" Grid.Column="3" HorizontalAlignment="Right"   Value="{Binding DataContext.UsersScores,RelativeSource={RelativeSource AncestorType=IMViews:SummaryScoreResource}, UpdateSourceTrigger=PropertyChanged}"
                                          UserId="{Binding DataContext.UserId,RelativeSource={RelativeSource AncestorType=IMViews:SummaryScoreResource}}"/>
                </Grid>
                <Border BorderBrush="{Binding DataContext.TextColor,RelativeSource={RelativeSource AncestorType=IMViews:SummaryScoreWindow}}" Background="{Binding DataContext.TextColor,RelativeSource={RelativeSource AncestorType=IMViews:SummaryScoreWindow}}" Margin="20,0,0,0" Grid.Row="1" />
            </Grid>
            <!--<ControlTemplate.Triggers>
                <MultiDataTrigger>
                    <MultiDataTrigger.Conditions>
                        <Condition Binding="{Binding Path=IsMouseOver, ElementName=Grid1}" Value="True"></Condition>
                    </MultiDataTrigger.Conditions>
                    <Setter   TargetName="Grid1" Property="Background" Value="LightBlue" />
                </MultiDataTrigger>
            </ControlTemplate.Triggers>-->
        </ControlTemplate>
        <Style TargetType="{x:Type Button}"  x:Key="SummaryResourceStyle">
            <Setter Property="Template" Value="{StaticResource SummaryResourceTemplate}" />
        </Style>
    </UserControl.Resources>
    <UserControl.Triggers>
        <EventTrigger RoutedEvent="IMViews:SummaryScoreResource.Loaded">
            <BeginStoryboard Name="showQueryCanvasStoryboard2"  
                      Storyboard="{StaticResource showControl}">
            </BeginStoryboard>
        </EventTrigger>

        <!--弹回窗体--><!--
        <EventTrigger RoutedEvent="IMViews:SummaryScoreResource.StartRemoveButton">
            <BeginStoryboard Name="closeQueryCanvasStoryboard"  
                      Storyboard="{StaticResource closeControl}">
            </BeginStoryboard>
        </EventTrigger>-->

    </UserControl.Triggers>
    <Grid x:Name="mainGrid" Width="600" Height="40">
        <Button x:Name="btnControl"  Style="{StaticResource SummaryResourceStyle}"  ></Button>
    </Grid>
</UserControl>