Question

我有一个具有属性的类，基于在combobox属性中选择一个项目，将显示或隐藏其他属性。我使用[RefreshProperties（RefreshProperties.All）]作为combobox属性。绑定到属性网格的类：

[TypeConverter(typeof(PropertySubsetConverter<FileSystemOperation>))]
 public class FileSystemOperation : IPropertySubsetObject
 { 
    [Description("File system operations like Copy, Move, Delete & Check file.")]
    [Category("Mandatory")]
    [RefreshProperties(RefreshProperties.All)]
    public Op Operation { get; set; }

 public enum Op
{
  /// <summary>
  /// Copy file
  /// </summary>
  CopyFile,
  /// <summary>
  /// Move file
  /// </summary>
  MoveFile,
  /// <summary>
  /// Delete file
  /// </summary>
  DeleteFile,
  /// <summary>
  /// Delete directory
  /// </summary>
  DeleteDirectory,
  /// <summary>
  /// Check if file exists
  /// </summary>
  ExistFile
}
 }

如果用户选择“DeleteDirectory”，则应显示以下属性，并隐藏其他属性

[AppliesTo(Op.DeleteDirectory)]
public bool Recursive { get; set; }

我的Xaml：

<xctk:PropertyGrid x:Name="pk"  HorizontalAlignment="Stretch"  VerticalAlignment="Stretch" FontWeight="ExtraBold" IsEnabled="{Binding PropertyGridIsEnabled}"  SelectedObject="{Binding SelectedElement, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}" Background="#FF4A5D80" Foreground="White"/>

这适用于Winform属性网格，但不适用于Xceed wpf属性网格。如果我遗漏任何要设置的属性，需要帮助。

Answer 1

修改属性的ReadOnly属性时遇到同样的问题。 WinForm PropertyGrid工作，Xceed PropertyGrid没有。可能是付费Plus版本可行。它具有DependsOn属性。

我使用PropertyGrid的PropertyValueChanged事件解决了它。

private void propertyGrid_PropertyValueChanged(object sender, PropertyValueChangedEventArgs e)
{
    // get the descriptor of the changed property
    PropertyDescriptor propDesc = ((PropertyItem)e.OriginalSource).PropertyDescriptor;

    // try to get the RefreshPropertiesAttribute
    RefreshPropertiesAttribute attr
        = (RefreshPropertiesAttribute)propDesc.Attributes[typeof(RefreshPropertiesAttribute)];

    // if the attribute exists and it is set to All
    if (attr != null && attr.RefreshProperties == RefreshProperties.All)
    {
        // invoke PropertyGrid.UpdateContainerHelper
        MethodInfo updateMethod = propertyGrid.GetType().GetMethod(
            "UpdateContainerHelper", BindingFlags.NonPublic | BindingFlags.Instance);
        updateMethod.Invoke(propertyGrid, new object[0]);
    }
}

Xceed属性网格 - [RefreshProperties（RefreshProperties.All）]属性不起作用

1 个答案: