打開表格時，按鈕和單選按鈕顯示爲禁用

Question

我不理解一件事。如果LicencePlate很糟糕，我的表單已經打開。在這種形式中，我有幾個按鈕，文本框和單選按鈕。這些按鈕和單選按鈕根據條件啓用和禁用。

有一段文本框LicencePlate的代碼，它將禁用或啓用這些單選按鈕和按鈕。

// <summary> 
    /// Fill Licence Plate with LicencePlateFinal from NotifiedTruck. 
    /// </summary> 
    public String LicencePlate 
    { 
     get { return PlateInformation.LicencePlateFinal; } 
     set 
     { 
      PlateInformation.LicencePlateFinal = value;    

      // Musí volat domeček - pokud se avizovaná a skutečná liší. 
      // Call house - if avizo != LicencePlateNotified 
      if (LicencePlate != Avizo) 
      { 
       _canEnableBtn = false; 
       NotifyPropertyChanged("CanEnableButton"); 
       _canEnableAcpt = true; 
       NotifyPropertyChanged("CanEnableAccept"); 
       _canEnableRadio = true; 
       NotifyPropertyChanged("CanEnableRadio");     
      } 

      // Avizovaná se rovná skutečné, ale liší se od OCRkované: povolují nakládku tlačítkem Pokračovat v nakládce která otevře detail vozidla v samostatném formuláři 
      // Avizo == LicencePlateFinal , but Avizo != OCR or LicencePlateFinal != OCR; then you can continue in loading process. 
      else if (LicencePlate == Avizo || LicencePlate != PlateInformation.LicencePlateOCR || Avizo != PlateInformation.LicencePlateOCR) 
      { 
       _canEnableBtn = true; 
       NotifyPropertyChanged("CanEnableButton"); 
       _canEnableAcpt = false; 
       NotifyPropertyChanged("CanEnableAccept"); 
       _canEnableRadio = false; 
       NotifyPropertyChanged("CanEnableRadio");     
      } 
      NotifyPropertyChanged("LicencePlate"); 
     } 
    }  

當我打開窗體。所有字段都禁用。當我點擊LicencePlate TextBox並寫一些想法時，條件激活。但是我想在表單打開時激活條件。不是在我在LicencePlate文本框中寫入一些文本之後。我還在特定的單選按鈕和按鈕上綁定了更新源觸發器。

這裏是屬性集：

public bool CanEnableButton 
    { 
     get 
     { 
      return _canEnableBtn; 
     } 

     set 
     { 
      if (_canEnableBtn != value) 
      { 
       _canEnableBtn = value; 
       NotifyPropertyChanged("CanEnableButton"); 
      } 
     } 
    } 

    public bool CanEnableRadio 
    { 
     get 
     {    

      return _canEnableRadio; 
     } 

     set 
     { 
      if (_canEnableRadio != value) 
      { 
       _canEnableRadio = value; 
       NotifyPropertyChanged("CanEnableRadio"); 
      } 
     } 
    } 

    public bool CanEnableAccept 
    { 
     get 
     { 
      return _canEnableAcpt; 
     } 

     set 
     { 
      if (_canEnableAcpt != value) 
      { 
       _canEnableAcpt = value; 
       NotifyPropertyChanged("CanEnableAccept"); 
      } 
     } 
    }   

這裏單選按鈕和按鈕的XAML：

<Button x:Name="btnContinueLoading" IsEnabled="{Binding CanEnableButton, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" Command="{Binding ContinueLoadingCmd}" Style="{StaticResource DialogButton}" Content="POKRAČOVAT V NÁKLADCE" Grid.Column="1" Height="31" Width="181" HorizontalAlignment="Right" Margin="0,11,10,0" VerticalAlignment="Top"> 

    </Button> 

    <RadioButton x:Name="chcxReturnState" Content="VRÁTIT" GroupName="Requests" IsChecked="{Binding IsReturned, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" 
          IsEnabled="{Binding CanEnableRadio, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" Grid.Column="1" HorizontalAlignment="Left" Margin="130,22,0,0" Grid.Row="1" VerticalAlignment="Top" Width="61"/> 
    <RadioButton x:Name="chcxWaitState" Content="POČKAT" GroupName="Requests" IsChecked="{Binding IsWaiting, UpdateSourceTrigger=PropertyChanged,Mode=TwoWay}" 
          IsEnabled="{Binding CanEnableRadio, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" Grid.Column="1" HorizontalAlignment="Left" Margin="10,22,0,0" Grid.Row="1" VerticalAlignment="Top"/> 
    <Button x:Name="button" Content="POTVRDIT" Command="{Binding ConfirmRequestCmd, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" IsEnabled="{Binding CanEnableAccept,UpdateSourceTrigger=PropertyChanged, Mode=OneWay}" Grid.Column="1" HorizontalAlignment="Left" Margin="10,14,0,0" Grid.Row="2" Height="31" VerticalAlignment="Top" Width="181" Style="{StaticResource DialogButton}"/> 

任何提示嗎？非常感謝。

Answer 1

這

public bool CanEnableButton 
{ 
    get 
    { 
     return _canEnableBtn; 
    } 

    set 
    { 
     _canEnableBtn = value; 
     NotifyPropertyChanged("CanEnableButton"); 
    } 
} 

public bool CanEnableRadio 
{ 
    get 
    {    

     return _canEnableRadio; 
    } 

    set 
    { 
     _canEnableRadio = value; 
     NotifyPropertyChanged("CanEnableRadio"); 
    } 
} 

public bool CanEnableAccept 
{ 
    get 
    { 
     return _canEnableAcpt; 
    } 

    set 
    { 
     _canEnableAcpt = value; 
     NotifyPropertyChanged("CanEnableAccept"); 
    }   

在你的構造insted的設置任何你想要的標誌。 這是行得通的。

假設我們假設你的構造類似這樣的

public YourConstructor() 
{ 
CanEnableAccept=true; 
CanEnableRadio=true; 
CanEnableButton=true; 
}