Question

我有一个自定义用户控件，在尝试将其添加到设计器视图时触发异常。（More information on that bug here）

有人告诉我，我必须告诉设计师不承认该控件，因此不会将其序列化。我发现这MSDN article似乎做了我想做的事。我假设这将解决我的错误，希望！ :) （如果您有更好的想法，请告诉我如何修复此错误。）

如何将我的课程元数据添加到隐藏或内容？谢谢！

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Collections.ObjectModel;
using System.Runtime.Serialization;
using System.ComponentModel.Design.Serialization;

namespace WinformsPlayground
{
    [DesignerSerializerAttribute()] //THE QUESTION IS HERE!
    public partial class HorizontalPictureScroller : UserControl
    {
        public HorizontalPictureScroller()
        {
            InitializeComponent();
            Pictures = new ObservableCollection<SelectablePicture>();
            Pictures.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler(Pictures_CollectionChanged);
        }       

        #region "Properties"
        public ObservableCollection<SelectablePicture> Pictures { get; set; }
        private int PositionControlX = 0;
        #endregion

        #region "Methods"
        private void RedrawPictures()
        {
            PositionControlX = 0;

            foreach (var picture in Pictures)
            {
                picture.Location = new Point(PositionControlX + panelPicturesWrapper.AutoScrollPosition.X, 0);
                PositionControlX += 130;
                panelPicturesWrapper.Controls.Add(picture);
            }
        }

        public void AddPicture(SelectablePicture picture)
        {
            Pictures.Add(picture);
        }

        public void RemovePicture(SelectablePicture picture)
        {
            Pictures.Remove(picture);
        }

        public void MovePictureLeft(int index)
        {
            SelectablePicture tmpPicture = Pictures[index];
            Pictures[index] = Pictures[index - 1];
            Pictures[index - 1] = tmpPicture;
        }

        public void MovePictureRight(int index)
        {
            SelectablePicture tmpPicture = Pictures[index];
            Pictures[index] = Pictures[index + 1];
            Pictures[index + 1] = tmpPicture;
        }
        #endregion

        #region "Events"
        void Pictures_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
        {
            RedrawPictures();
        }
        #endregion
    }
}

编辑：根据这里的建议我将其添加到课程顶部，但编译时收到错误。

namespace WinformsPlayground
{
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
    public partial class HorizontalPictureScroller : UserControl
    {
        public HorizontalPictureScroller()
        {
            InitializeComponent();
            Pictures = new ObservableCollection<SelectablePicture>();
            Pictures.CollectionChanged += new System.Collections.Specialized.NotifyCollectionChangedEventHandler(Pictures_CollectionChanged);
        }

错误是：

错误1属性 'DesignerSerializationVisibility'是对此声明类型无效。它仅适用于'方法，财产，索引器，字段，事件' 声明。 C：\ Users \用户Sergio.Tapia \文档\ Visual 工作室 2010 \ Projects \ WinformsPlayground \ WinformsPlayground \ HorizontalPictureScroller.cs 15 6 WinformsPlayground

Answer 1

我不确定，但它可能会阻塞您的公共可序列化图片列表。只是为了测试，我会尝试在您的班级

上面的这个属性上方添加以下内容

[DesignerSerializationVisibility（DesignerSerializationVisibility.Hidden）]

我相信如果你把它隐藏起来，它就不会使它成为属性表中的可编辑值，因此实际上并没有尝试编写对象的序列化内容。

Answer 2

我尝试了以下内容，似乎对我有用：

internal class HorizontalPictureScrollerSerializer : CodeDomSerializer
    {
        public override object Deserialize(IDesignerSerializationManager manager, object codeObject)
        {
            var baseClassSerializer = (CodeDomSerializer) manager.
                                                              GetSerializer(
                                                                  typeof (HorizontalPictureScroller).BaseType,
                                                                  typeof (CodeDomSerializer));

            return baseClassSerializer.Deserialize(manager, codeObject);
        }

        public override object Serialize(IDesignerSerializationManager manager, object value)
        {

            var baseClassSerializer = (CodeDomSerializer) manager.GetSerializer(
                                                                  typeof (HorizontalPictureScroller).BaseType,
                                                                  typeof (CodeDomSerializer));

            object codeObject = baseClassSerializer.Serialize(manager, value);


            return codeObject;
        }
    }

    [DesignerSerializerAttribute(typeof (HorizontalPictureScrollerSerializer), typeof (CodeDomSerializer))]
    //THE QUESTION IS HERE!
    public partial class HorizontalPictureScroller : UserControl
    {
                         .......
    }

如何在自定义用户控件上使用DesignerSerializerAttribute？

2 个答案: