C# 设计器中未序列化派生集合属性

我有一个类，它派生自一个集合，该集合有一个属性MyString，即

  public class CollectionItem
  {
    public bool MyBoolean { get; set; }

    public int MyInteger { get; set; }
  }

  public class MyCollection : List<CollectionItem>
  {
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
    public string MyString { get; set; }

    public MyCollection()
    {
      MyString = "Hello";
    }
  }

---

谁能告诉我，为了将MyString属性序列化到表单设计器，我还需要做些什么

默认CodeDom集合序列化程序不会序列化集合的属性。您可以通过从

CodeDomSerializer

派生来创建自定义序列化程序。然后为类注册自定义序列化程序：

[DesignerSerializer(typeof(MyCollectionSerializer), typeof(CodeDomSerializer))]
public class MyCollection : List<CollectionItem>

然后，

MyString

属性也将被序列化：

// 
// dummyControl1
// 
...
this.dummyControl1.MyCollection.Add(collectionItem1);
this.dummyControl1.MyCollection.Add(collectionItem2);
this.dummyControl1.MyCollection.Add(collectionItem3);
this.dummyControl1.MyCollection.MyString = "Hello";
...

[DesignerSerializer(typeof(MyCollectionSerializer), typeof(CodeDomSerializer))]
public class MyCollection : List<CollectionItem>

using System.CodeDom;
using System.ComponentModel;
using System.ComponentModel.Design.Serialization;
public class MyCollectionSerializer : CodeDomSerializer
{
    public override object Serialize(IDesignerSerializationManager manager, object value)
    {
        var baseSerializer = (CodeDomSerializer)manager.GetSerializer(
            typeof(MyCollection).BaseType, typeof(CodeDomSerializer));
        var statements = (CodeStatementCollection)baseSerializer.Serialize(manager, value);
        var property = TypeDescriptor.GetProperties(value)[nameof(MyCollection.MyString)];
        if (property.ShouldSerializeValue(value))
        {
            var targetObject = base.GetExpression(manager, value);
            var cpre = new CodePropertyReferenceExpression(targetObject, property.Name);
            var cpe = new CodePrimitiveExpression(property.GetValue(value));
            var cas = new CodeAssignStatement(cpre, cpe);
            statements.Add(cas);
        }
        return statements;
    }
} 

// 
// dummyControl1
// 
...
this.dummyControl1.MyCollection.Add(collectionItem1);
this.dummyControl1.MyCollection.Add(collectionItem2);
this.dummyControl1.MyCollection.Add(collectionItem3);
this.dummyControl1.MyCollection.MyString = "Hello";
...