在属性网格中隐藏可扩展属性的省略号(...)按钮，例如font属性的"..."按钮 [英] Hide ellipsis (…) button of expandable property like “…” button of font property in the property grid

问题描述

我已经在我的自定义控件中添加了一个新属性，作为可扩展属性，如Property Grid中的font属性.在Windows窗体应用程序项目中使用自定义控件后，在属性网格"中看到一个省略号(...)按钮，如font属性的"..."按钮. (有关更多信息，请参见下图.)
我的一个自定义控件属性 [

I''ve added a new property to my custom control as expandable property like font property in Property Grid. After using from my custom control in a Windows Forms Application project, I see an ellipsis (…) button like "…" button of font property in Property Grid. (For more information, please see the following picture.)
One of my custom control properties[^]
Now, I want to hide the ellipsis (…) button for my new expandable property.
Expandable property codes are:

[DisplayName("Floors Information")]
[Description("Floors Informationnnnnnnnnnnnnnnn")]
[DefaultProperty("TitleText")]
[DesignerCategory("Component")]
public class FloorsInformation : DockContainerItem
{
    private SimilarFloorsInformation similarFloorsInformation = new SimilarFloorsInformation();

    public FloorsInformation()
    {

    }

    [Category("Data")]
    [DisplayName("Similar Floors Panel")]
    [Description("Similar Floors Panellllllllllllllllllll")]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
    [Editor(typeof(ItemsCollectionEditor), typeof(UITypeEditor))]
    //[TypeConverter(typeof(ExpandableObjectConverter))]
    //[TypeConverter(typeof(SimilarFloorsInformationTypeConverter))]
    public SimilarFloorsInformation SimilarFloorsInfo
    {
        get
        {
            return similarFloorsInformation;
        }
    }
}

[DisplayName("Similar Floors Information")]
[Description("Similar Floors Informationnnnnnnnnnnnnnnn")]
[DefaultProperty("Text")]
[DesignerCategory("Component")]
[TypeConverter(typeof(SimilarFloorsInformationTypeConverter))]
//[TypeConverter(typeof(ExpandableObjectConverter))]
public class SimilarFloorsInformation : ExpandablePanel
{
    private Color canvasColor = SystemColors.Control;
    private eCollapseDirection collapseDirection = eCollapseDirection.LeftToRight;
    private eDotNetBarStyle colorSchemeStyle = eDotNetBarStyle.StyleManagerControlled;
    private DockStyle dock = DockStyle.Right;
    private eTitleButtonAlignment expandButtonAlignment = eTitleButtonAlignment.Left;
    private bool expanded = false;
    private bool markupUsesStyleAlignment = true;
    private Size size = new Size(30, 177);

    public SimilarFloorsInformation()
    {

    }
}

public class SimilarFloorsInformationTypeConverter : ExpandableObjectConverter//TypeConverter
{
    public override bool CanConvertTo(ITypeDescriptorContext context, Type destinationType)
    {
        if (destinationType == typeof(SimilarFloorsInformation))
        {
            return true;
        }
        return base.CanConvertTo(context, destinationType);
    }

    public override object ConvertTo(ITypeDescriptorContext context, CultureInfo culture, object value, Type destinationType)
    {
        if (destinationType == typeof(String) && value is SimilarFloorsInformation)
        {
            SimilarFloorsInformation similarFloorsInformation = (SimilarFloorsInformation)value;
            return similarFloorsInformation.TitleText;
        }
        return base.ConvertTo(context, culture, value, destinationType);
    }

    public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
    {
        if (sourceType == typeof(string))
        {
            return true;
        }
        return base.CanConvertFrom(context, sourceType);
    }

    public override object ConvertFrom(ITypeDescriptorContext context, CultureInfo culture, object value)
    {
        if (value is string)
        {
            SimilarFloorsInformation similarFloorsInformation = new SimilarFloorsInformation();
            similarFloorsInformation.TitleText = (string)value;
            return similarFloorsInformation;
        }
        return base.ConvertFrom(context, culture, value);
    }
}

推荐答案

这不是属性网格的工作方式和自定义方式.您不显示或隐藏网格特征，而是更改数据模型.这个想法是:您分配PropertyGrid的SelectedObject属性，它表示您的对象.如何自定义它:您使用一些不同的对象，这些对象仅通过实现接口System.ComponentModel.ICustomTypeDescriptor间接表示您的目标对象.这样，您可以禁用显示.NET Framework类库(FCL)中已经可用的字体对象的自定义编辑器，并以某种不同的方式显示字体:例如，您可以将字体显示为网格的子节点.树，并将其属性显示为单独的子节点.

在我过去的回答中更详细地描述了这种技术:
如何在单击PropertyGrid时获得响应 [ ^ ].

—SA

This is not how property grid works and customized. You don''t show or hide the grid features, you change the data model. The idea is: you assign SelectedObject property of the PropertyGrid, and it presents your object. How to customize it: you use some different object, which only represents your target object indirectly, through implementing of the interface System.ComponentModel.ICustomTypeDescriptor. This way, you can disable showing the custom editor for font object already available in the .NET Framework Class Library (FCL), and present the font in some different way: for example, you can show a font as a child node of the grid tree, and show its properties as separate sub-nodes.

This technique is described in more detain in my past answer:
How to get response when click PropertyGrid[^].

—SA

我解决了我的问题.对于我已应用于自定义控件的" SimilarFloorsInfo "属性的以下代码行(属性)，显示了省略号(...)按钮:

I solved my problem. Ellipsis (...) button is shown for following line of code (Attribute) that I''ve applied to the "SimilarFloorsInfo" property of my custom control:

[Editor(typeof(ItemsCollectionEditor), typeof(UITypeEditor))]

因此，必须删除或注释此代码行.现在，在属性网格中没有为我的属性显示省略号(...)按钮.

So, this line of code must be deleted or commented. Now, Ellipsis (...) button not shown for my property in the property grid.

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