如何通過樣式和數據綁定

設置一個WPF按鈕邊框CornerRadius我有一個簡單的WPF按鈕下： -如何通過樣式和數據綁定

<Button Height="150" Width="145" Canvas.Top="8" Canvas.Left="9" x:Name="cmdButton_Template" Background="{Binding Button_BackGround}" Style="{StaticResource MyLocalButton}" Mouse.PreviewMouseUp="cmdButton_Template_PreviewMouseUp" > 
    <Label> 
     <ContentControl HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" Height="131" Canvas.Left="10" Canvas.Top="10" Width="142" > 
     <Canvas x:Name="ContentCanvas"> 
      <TextBlock Canvas.Left="{Binding Text_2_Left,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" Canvas.Top="{Binding Text_2_Top,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" Text="{Binding Text, ElementName=txtItem_Cat_Name2,UpdateSourceTrigger=PropertyChanged}" FontSize="{Binding Font_Size_2}" FontFamily="{Binding Font_Name_2}" Foreground="{Binding Font_Color_2}" FontStyle="{Binding ElementName=chkItalic_2,Path=IsChecked,Converter={StaticResource FIC}, UpdateSourceTrigger=PropertyChanged}" TextDecorations="{Binding Font_Underline_2,Converter={StaticResource FUC}}" FontWeight="{Binding Font_Bold_2,Converter={StaticResource FVT}}" x:Name="Button_Text_2" MouseLeftButtonUp="Button_Text_2_MouseLeftButtonUp" Grid.RowSpan="3"/> 
     </Canvas> 
     </ContentControl> 
    </Label> 
</Button>

和我有這樣的userControl.Resources這樣的風格：

<UserControl.Resources> 
<Style x:Key="MyLocalButton" TargetType="Button"> 
     <Setter Property="OverridesDefaultStyle" Value="True" /> 
     <Setter Property="Cursor" Value="Hand" /> 
     <Setter Property="Template"> 
      <Setter.Value> 
       <ControlTemplate TargetType="Button"> 
        <Border Name="borderZero" BorderThickness="0" BorderBrush="Black" Background="{TemplateBinding Background}" CornerRadius="{Binding AllCorners,Mode=OneWay,UpdateSourceTrigger=PropertyChanged}"> 
         <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" /> 
        </Border> 
        <ControlTemplate.Triggers> 
         <Trigger Property="IsMouseOver" Value="True"> 
          <Setter Property="Opacity" Value="0.8" /> 
         </Trigger> 

        </ControlTemplate.Triggers> 
       </ControlTemplate> 
      </Setter.Value> 
     </Setter> 
    </Style> 

<Style x:Key="SomeButtonStyle" TargetType="Button"> 
      <Setter Property="Background" Value="Black" /> 
      <Setter Property="Template"> 
       <Setter.Value> 
        <ControlTemplate TargetType="Button"> 
         <Grid Background="{TemplateBinding Background}"> 
          <ContentPresenter /> 
         </Grid> 
        </ControlTemplate> 
       </Setter.Value> 
      </Setter> 
    </Style> 
    </UserControl.Resources>

這是我的DataModel：

public class DM_ButtonSettings 
    { 
    public CornerRadius _AllCorners = new CornerRadius(10, 10, 10, 10); 
     public CornerRadius AllCorners 
     { 
      get { return _AllCorners; } 
      set 
      { 
       if (_AllCorners != value) 
       { 
        _AllCorners = value; 

       } 
      } 
     } 
    }

，這是我的ViewModel：

public class DC_ButtonSettings:INotifyPropertyChanged 
{ 
public CornerRadius _AllCorners = new CornerRadius(10, 10, 10, 10); 
     public CornerRadius AllCorners 
     { 
      get { return _AllCorners; } 
      set 
      { 
       if (_AllCorners != value) 
       { 
        _AllCorners = value; 
        RaisePropertyChangedEvent("AllCorners"); 
       } 
      } 
    } 
}

我有一個名爲CornerRadius和我一個ViewModel屬性正在嘗試使用該屬性由用戶控制的本地resoources綁定到風格在運行時更改按鈕角的半徑。我將此ViewModel的對象傳遞給Button所在的窗體，並試圖通過根據程序邏輯以編程方式更改CornerRadius來更改Button的圓角半徑。儘管ViewModel中的值發生了更改，但View沒有得到更新。我知道我錯過了一些非常簡單的東西，但我無法自己弄清楚。我該怎麼做對不對？

來源

2017-07-16 Jatinder Walia

我剛剛從樣式中刪除了您的模式& updatesourcetrigger。它爲我工作。

<Style x:Key="MyLocalButton" TargetType="Button"> 
       <Setter Property="OverridesDefaultStyle" Value="True" /> 
       <Setter Property="Cursor" Value="Hand" /> 
       <Setter Property="Template"> 
        <Setter.Value> 
         <ControlTemplate TargetType="Button"> 
          <Border Name="borderZero" BorderThickness="2" BorderBrush="Black" Background="{TemplateBinding Background}" CornerRadius="{Binding AllCorners}"> 
           <ContentPresenter HorizontalAlignment="Center" VerticalAlignment="Center" /> 
          </Border> 
          <ControlTemplate.Triggers> 
           <Trigger Property="IsMouseOver" Value="True"> 
            <Setter Property="Opacity" Value="0.8" /> 
           </Trigger> 
          </ControlTemplate.Triggers> 
         </ControlTemplate> 
        </Setter.Value> 
       </Setter> 
      </Style>

來源

2017-07-16 15:35:58

damnnn ...它也適用於我...： - ）....我使用了錯誤的對象...： - ）... tx Sushil –

如何通過樣式和數據綁定

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