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wpf 数据转换器Convert的基本使用_wpfconvert转换器放在哪

作者：Monodyee | 2024-05-05 06:33:39

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wpfconvert转换器放在哪

使用场景

        数据实体中常有用INT值属性保存对应该枚举的数据，在界面显示时想显示枚举的描述时使用。

效果

示例

        实体

  1. /// <summary>
  2. /// 点位表 实体
  3. /// </summary>
  4. [MfTable("Point")]
  5. public class PointModel : BaseModelExtendIdAndName<int>
  6. {
  7. 	/// <summary>
  8. 	/// 编号
  9. 	/// </summary>		
  10. 	public int No { get; set; }
  11.  
  12. 	/// <summary>
  13. 	/// X轴坐标
  14. 	/// </summary>		
  15. 	public decimal PointX { get; set; }
  16.  
  17. 	/// <summary>
  18. 	/// Y轴坐标
  19. 	/// </summary>		
  20. 	public decimal PointY { get; set; }
  21.  
  22.     /// <summary>
  23.     /// 另外增加的修正值X
  24.     /// </summary>
  25.     public decimal AddX { get; set; }
  26.  
  27.     /// <summary>
  28.     /// 另外增加的修正值Y
  29.     /// </summary>
  30.     public decimal AddY { get; set; }
  31.  
  32.     /// <summary>
  33.     /// 类型[焊接点位:0,相机点位:1,标定点位:2,轴点位:3] PointTypeEnum
  34.     /// </summary>		
  35.     public int Type { get; set; }
  36.  
  37. 	/// <summary>
  38. 	/// 配方ID
  39. 	/// </summary>
  40. 	public int FormulaId { get; set; }
  41.  
  42. 	/// <summary>
  43. 	/// 轴卡 ID
  44. 	/// </summary>
  45. 	public int AxisId { get; set; }
  46.  
  47.     /// <summary>
  48.     /// 获取X轴总值
  49.     /// </summary>
  50.     /// <returns></returns>
  51.     public decimal GetPointXSum()
  52.     {
  53.         return PointX + AddX;
  54.     }
  55.  
  56.     /// <summary>
  57.     /// 获取Y轴总值
  58.     /// </summary>
  59.     /// <returns></returns>
  60.     public decimal GetPointYSum()
  61.     {
  62.         return PointY + AddY;
  63.     }
  64.  
  65.     /// <summary>
  66.     /// 获取类型描述
  67.     /// </summary>
  68.     /// <returns></returns>
  69.     public string GetPointTypeDesc()
  70.     {
  71.         return ((PointTypeEnum)Enum.Parse(typeof(PointTypeEnum), this.Type.ToString())).GetEnumDesc();
  72.     }
  73. }    
  74.  
  75. /// <summary>
  76. /// 点位类型
  77. /// </summary>
  78. public enum PointTypeEnum
  79. {
  80. 	/// <summary>
  81. 	/// 焊接点位
  82. 	/// </summary>
  83. 	[Description("焊接点位")]
  84. 	WeldPoint = 0,
  85.  
  86. 	/// <summary>
  87. 	/// 相机点位
  88. 	/// </summary>
  89. 	[Description("相机点位")]
  90. 	CameraPoint = 1,
  91.  
  92.     /// <summary>
  93.     /// 标定点位
  94.     /// </summary>
  95.     [Description("标定点位")]
  96.     StandardizationPoint = 2,
  97.  
  98.     /// <summary>
  99.     /// 轴点位
  100.     /// </summary>
  101.     [Description("轴点位")]
  102.     AxisPoint = 3,
  103.  
  104.     /// <summary>
  105.     /// CAD图点位
  106.     /// </summary>
  107.     [Description("CAD图点位")]
  108.     CADPoint = 4,
  109. }

转换器

  1. /// <summary>
  2. /// 转换器
  3. /// </summary>
  4. public class PointTypeConvert : IValueConverter
  5. {
  6.     //正转
  7.     public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
  8.     {
  9.         //根据枚举值获取对应的描述
  10.         return ((PointTypeEnum)value).GetEnumDesc();
  11.     }
  12.  
  13.     //反转
  14.     public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
  15.     {
  16.         return value;
  17.     }
  18. }

界面绑定

注意看

1.引用转换器所在命名空间 xmlns:dc="clr-namespace:SZCLKJ.Weld.App.DataConvert"

2.在界面资源中创建资源key :<dc:PointTypeConvert x:Key="pointTypeCon"/>

3.在要使用的地方调用: <DataGridTextColumn Header="类型" Binding="{Binding Type,Converter={StaticResource pointTypeCon}}" Width="100"/>

  1. <UserControl x:Class="SZCLKJ.Weld.App.Views.PointListView"
  2.              xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  3.              xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  4.              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
  5.              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
  6.              xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
  7.              xmlns:local="clr-namespace:SZCLKJ.Weld.App.Views"
  8.              xmlns:dc="clr-namespace:SZCLKJ.Weld.App.DataConvert"
  9.              mc:Ignorable="d" 
  10.              d:DesignHeight="450" d:DesignWidth="800">
  11.     <UserControl.Resources>
  12.         <ResourceDictionary>
  13.             <ResourceDictionary.MergedDictionaries>
  14.                 <ResourceDictionary Source="/SZCLKJ.Weld.App;component/Asset/Styles/BaseResources.xaml"/>
  15.                 <ResourceDictionary Source="/SZCLKJ.Weld.App;component/Asset/Styles/ButtonStyles.xaml"/>
  16.                 <ResourceDictionary Source="/SZCLKJ.Weld.App;component/Asset/Styles/TextBoxStyle.xaml"/>
  17.             </ResourceDictionary.MergedDictionaries>
  18.             <dc:PointTypeConvert x:Key="pointTypeCon"/>
  19.         </ResourceDictionary>        
  20.     </UserControl.Resources>
  21.     <Grid>
  22.         <Grid.RowDefinitions>
  23.             <RowDefinition Height="50"/>
  24.             <RowDefinition/>
  25.         </Grid.RowDefinitions>
  26.  
  27.         <!--<Border BorderBrush="#DDD" BorderThickness="0,0,0,1"/>-->
  28.         <WrapPanel VerticalAlignment="Center" >
  29.             <!--搜索框-->
  30.             <Label Grid.Row="0" Content="配方：" BorderThickness="0" FontSize="20" Height="35" Margin="10,0,0,0" 
  31.                 HorizontalAlignment="Left" VerticalAlignment="Center" Foreground="#AAFFFFFF" />
  32.             <ComboBox Grid.Row="0" x:Name="cboFormulaList" 
  33.                 ItemsSource="{Binding FormulaList}" DisplayMemberPath="Name" SelectedValuePath="Id" 
  34.                 SelectedItem="{Binding SearchModel.FormulaId, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" 
  35.                 SelectionChanged="cboFormulaList_SelectionChanged"
  36.                 Width="150" Height="35" FontSize="20" Margin="10,10,0,6" HorizontalAlignment="Left" VerticalAlignment="Center" />
  37.             <Label Content="点位名称：" BorderThickness="0" FontSize="20" Height="35" Margin="10,0,0,0" 
  38.                    VerticalAlignment="Center" 
  39.                    Foreground="#AAFFFFFF" />
  40.             <TextBox Text="{Binding SearchModel.NameLike}" VerticalAlignment="Center" HorizontalAlignment="Left" 
  41.                     Width="100" Height="35" Margin="10,0,0,0" 
  42.                      Style="{DynamicResource SearchTextBoxStyle}"/>
  43.             <Label Content="类型：" BorderThickness="0" FontSize="20" Height="35" Margin="10,0,0,0" 
  44.                     HorizontalAlignment="Left" VerticalAlignment="Center" Foreground="#AAFFFFFF" />
  45.             <!--<ComboBox x:Name="cboPointTypes" 
  46.                 ItemsSource="{Binding PointTypes}" DisplayMemberPath="Name" SelectedValuePath="Id" 
  47.                 SelectedItem="{Binding SearchModel.Type}" 
  48.                 Width="150" Height="35" FontSize="20" Margin="10,10,0,6" HorizontalAlignment="Left" 
  49.                 VerticalAlignment="Center" />-->
  50.  
  51.             <ComboBox Name="cboPointType" Width="150" Height="35" FontSize="20" Margin="10,10,0,6" 
  52.                       HorizontalAlignment="Left" VerticalAlignment="Center"
  53.                 ItemsSource="{Binding PointTypes}"
  54.                 DisplayMemberPath="Description"
  55.                 SelectedValuePath="Val"
  56.                 SelectedItem="{Binding PointTypeSelect, Mode=TwoWay}"
  57.             >
  58.                 <i:Interaction.Triggers>
  59.                     <i:EventTrigger EventName="SelectionChanged">
  60.                         <i:InvokeCommandAction Command="{Binding PointTypeSelectionChangedCommand}"   
  61. CommandParameter="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=ComboBox}}"/>
  62.                     </i:EventTrigger>
  63.                 </i:Interaction.Triggers>
  64.             </ComboBox>
  65.         </WrapPanel>
  66.         
  67.         <!--右边按钮-->
  68.         <StackPanel VerticalAlignment="Center" HorizontalAlignment="Right" Orientation="Horizontal">
  69.             <Button Content="查询" Style="{StaticResource NormalButtonStyle}" Background="#FF0ABEFF" 
  70.                     Width="70" Margin="5,0" Command="{Binding QueryCommand}"/>
  71.             <Button Content="添加" 
  72.                     Style="{StaticResource IconWithContentButtonStyle}" Width="100"
  73.                     Tag="&#xe603;" Background="#FFF05005"
  74.                     Command="{Binding AddCommand}"/>    
  75.         </StackPanel>
  76.         <DataGrid Grid.Row="1" ItemsSource="{Binding DataList}" AutoGenerateColumns="False" CanUserAddRows="False" ColumnWidth="*" 
  77.             >
  78.             <DataGrid.Columns>
  79.                 <DataGridTextColumn Header="序号" Binding="{Binding No}" Width="150" />
  80.                 <DataGridTextColumn Header="名称" Binding="{Binding Name}" Width="100" />
  81.                 <DataGridTextColumn Header="X坐标" Binding="{Binding PointX}" Width="100"/>
  82.                 <DataGridTextColumn Header="Y坐标" Binding="{Binding PointY}" Width="100"/>
  83.                 <DataGridTextColumn Header="补偿X" Binding="{Binding AddX}" Width="100"/>
  84.                 <DataGridTextColumn Header="补偿Y" Binding="{Binding AddY}" Width="100"/>
  85.                 <!--<DataGridTextColumn Header="类型" Binding="{Binding TypeDesc}" Width="100"/>-->
  86.                 <DataGridTextColumn Header="类型" Binding="{Binding Type,Converter={StaticResource pointTypeCon}}" Width="100"/>
  87.                 <DataGridTextColumn Header="备注" Binding="{Binding Remark}"/>
  88.                 <DataGridTemplateColumn Width="120" Header="操作">
  89.                     <DataGridTemplateColumn.CellTemplate>
  90.                         <DataTemplate>
  91.                             <StackPanel Orientation="Horizontal">
  92.                                 <Button x:Name="gridEdit"
  93.                                         Width="40"
  94.                                         Height="20"
  95.                                         Background="#409EFF"
  96.                                         Foreground="White"
  97.                                         Margin="10,0,0,0"
  98.                                         Command="{Binding DataContext.EditCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=DataGrid}}"
  99.                                         CommandParameter="{Binding Id}"
  100.                                         Content="编辑" />
  101.  
  102.                                 <Button
  103.                                         x:Name="gridDele"
  104.                                         Width="40"
  105.                                         Height="20"
  106.                                         Background="#F56C6C"
  107.                                         Foreground="White"
  108.                                         Margin="10,0,0,0"
  109.                                         Command="{Binding DataContext.DeleteCommand, RelativeSource={RelativeSource Mode=FindAncestor, AncestorType=DataGrid}}"
  110.                                         CommandParameter="{Binding Id}"
  111.                                         Content="删除" />
  112.                             </StackPanel>
  113.                         </DataTemplate>
  114.                     </DataGridTemplateColumn.CellTemplate>
  115.                 </DataGridTemplateColumn>
  116.             </DataGrid.Columns>
  117.         </DataGrid>
  118.     </Grid>
  119. </UserControl>

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