1.描述

如果您定义了一个有三个按钮的按钮组单元格类型，您需要为每个按钮设置命令。

2.为属性添加命令设置

为按钮设置命令如下所示：

public class ButtonGroupCellType : CellType
{
    public List<Command> AddButtonCommandList
    {
        get; set;
    }
    public List<Command> EditButtonCommandList
    {
        get; set;
    }
    public List<Command> DeleteButtonCommandList
    {
        get; set;
    }
}

在这个例子中，如果您为按钮设置一个“设置单元格属性”的命令，选择A1单元格，设置其值。右击这个单元格查找所有的引用时，您会发现查找不到任何引用，这是为什么呢？

在上面的例子中，应实现IReferenceCommand接口，返回属性中使用的所有命令，这样当您查找命令中的引用时，就会将其查找出来。

[Designer(typeof(ButtonGroupCellTypeDesigner))]
public class ButtonGroupCellType : CellType, IReferenceCommand
{
    public List<Command> AddButtonCommandList
    {
        get; set;
    }
    public List<Command> EditButtonCommandList
    {
        get; set;
    }
    public List<Command> DeleteButtonCommandList
    {
        get; set;
    }
    public IEnumerable<LocatedObject<List<Command>>> GetCommandList(LocationIndicator location)
    {
        if (AddButtonCommandList != null)
        {
            yield return new LocatedObject<List<Command>>(AddButtonCommandList, location.AppendProperty("AddButtonCommandList"));
        }
        if (EditButtonCommandList != null)
        {
            yield return new LocatedObject<List<Command>>(EditButtonCommandList, location.AppendProperty("EditButtonCommandList"));
        }
        if (DeleteButtonCommandList != null)
        {
            yield return new LocatedObject<List<Command>>(DeleteButtonCommandList, location.AppendProperty("DeleteButtonCommandList"));
        }
    }
}

手动打开命令对话框

当您定义了属性List<Command>，您不需要指定其编辑器，会自动生成命令对话框。还有一种方法手动打开命令对话框。

[Designer("ButtonGroupCellType.ButtonGroupCellTypeDesigner,ButtonGroupCellType")]
public class ButtonGroupCellType : CellType, IReferenceCommand
{

    // CellType code...
}

public class ButtonGroupCellTypeDesigner : CellTypeDesigner<ButtonGroupCellType>
{
    public override EditorSetting GetEditorSetting(PropertyDescriptor property, IBuilderContext builderContext)
    {
        if (property.Name == "AddButtonCommandList")
        {
            return new HyperlinkEditorSetting(new ShowCommandDialogCommand(builderContext));
        }
        return base.GetEditorSetting(property, builderContext);
    }
}

定义ShowCommandDialogCommand如下，在一些复杂的属性设置对话框中，命令设置窗口常使用此方法。

internal class ShowCommandDialogCommand : ICommand
{
    private IBuilderContext builderContext;
    public ShowCommandDialogCommand(IBuilderContext builderContext)
    {
        this.builderContext = builderContext;
    }
    public event EventHandler CanExecuteChanged;
    public bool CanExecute(object parameter)
    {
        return true;
    }
    public void Execute(object parameter)
    {
        var commandList = (parameter as IEditorSettingsDataContext).Value as List<Command>;
        var window = builderContext.GetCommandWindow(CommandScope.Cell);
        window.InitCommandEvent += () => 
        {
            return commandList;
        };
        window.UpdateCommandEvent += (object sender, List<Command> newCommandList) => 
        {
            (parameter as IEditorSettingsDataContext).Value = newCommandList;
        };
         
        window.ShowDialog();
    }
}

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为属性添加命令设置

1.描述

2.为属性添加命令设置