c# - 可扩展属性仅返回计数和容量 C#

Question

我想将联名持有人的详细信息包括在主要账户持有人的个人资料中，多个联名持有人将在这里我使用派生自 collectiobass 类的“shareholdercolection”类，将联名持有人的详细信息分配给它。在应用程序属性的执行只返回容量和计数。为什么不叫属性描述符？

public class ShareholderCollection : CollectionBase, ICustomTypeDescriptor
{
    public void Add( UiclsJointHolderSummary sh)
    {
        this.List.Add(sh);
    }

    public void Remove( UiclsJointHolderSummary sh)
    {
        
        this.List.Remove(sh);
    }

   
    public UiclsJointHolderSummary this[int index]
    {
        get{
            return (UiclsJointHolderSummary)this.List[index];
        }
        set
        {
            base.List[index] = (UiclsJointHolderSummary)value;
        }

    }

    public AttributeCollection GetAttributes()
    {
        return TypeDescriptor.GetAttributes(this, noCustomTypeDesc: true);
    }

    public string GetClassName()
    {
        return TypeDescriptor.GetClassName(this, true);
    }


    public string GetComponentName()
    {
        return TypeDescriptor.GetComponentName(this, true);
    }


    public TypeConverter GetConverter()
    {
        return TypeDescriptor.GetConverter(this, true);
    }


    public EventDescriptor GetDefaultEvent()
    {
        return TypeDescriptor.GetDefaultEvent(this, true);
    }


    public PropertyDescriptor GetDefaultProperty()
    {
        return TypeDescriptor.GetDefaultProperty(this, true);
    }


    public object GetEditor(System.Type editorBaseType)
    {
        return TypeDescriptor.GetEditor(this, editorBaseType, true);
    }


    public EventDescriptorCollection GetEvents()
    { 
        return TypeDescriptor.GetEvents(this, true);
    }
    public EventDescriptorCollection GetEvents(Attribute[] attributes)
    {
        return TypeDescriptor.GetEvents(this, attributes, true);
    }

      

     PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties()
    {
        PropertyDescriptorCollection pds = new PropertyDescriptorCollection(null);
         

        for (int i = 0; i < this.Count; i = i + 1)
        {
            ShareholderCollectionPropertyDescriptor pd = new 
 `      `ShareholderCollectionPropertyDescriptor( this,i);

            pds.Add(pd);
        }
        return pds;
    }

    public PropertyDescriptorCollection GetProperties(Attribute[] attributes)
    {
        return GetProperties(attributes);

    }

    public object GetPropertyOwner(PropertyDescriptor pd )
    {
        return this;
    }

}

描述符类

 public class ShareholderCollectionPropertyDescriptor : PropertyDescriptor
{
    private ShareholderCollection collection;
    private int index = 1;
    public ShareholderCollectionPropertyDescriptor(ShareholderCollection _Coll,int _id) : base("#" + _id.ToString(), null)
    {

        this.collection = _Coll;
        this.index = _id;

    }

    public override AttributeCollection Attributes
    {
        get
        {
           // var attributes = TypeDescriptor.GetAttributes(GetValue(null), false);
            return new AttributeCollection(null);
            //return attributes;
        }
    }

    public override bool CanResetValue(object component)
    {
        return true;
    }
    public override Type ComponentType
    {
        get => this.collection.GetType();
    }

    public override string DisplayName
    {
        get
        {
            UiclsJointHolderSummary sh =  this.collection[index];
            return "[" + sh.NDX.ToString().Trim() + "] " + sh.INITIALS.ToString() + " " + sh.LASTNAME.ToString();
        }
    }

    public override string Description
    {
        get
        {
            UiclsJointHolderSummary sh = this.collection[index];
            StringBuilder sb = new StringBuilder();
            sb.Append(sh.ADDRESS.ADDRESS1);
            sb.Append(",");
            sb.Append(sh.ADDRESS.ADDRESS2);
            sb.Append(",");
            sb.Append(sh.ADDRESS.ADDRESS3);
            sb.Append(",");
            sb.Append(sh.ADDRESS.CITY);
            sb.Append(",");
            sb.Append(sh.ADDRESS.PCODE);

            return sb.ToString();
        }
    }


    public override object GetValue(object component)
    {
        return this.collection[index];
    }

    public override bool IsReadOnly
    { get => false; }


    //public override string Name
    //{
    //    get { return "#" + index.ToString(); }
    //}
    public override Type PropertyType
    {
        get => this.collection[index].GetType();

    }

    

   

    public override void ResetValue(object component)
    {
        throw new NotImplementedException();
    }

    public override void SetValue(object component, object value)
    {
        throw new NotImplementedException();
    }

    public override bool ShouldSerializeValue(object component)
    {
        return true;
    }


    //private static string GetDisplayName(ShareholderCollection ilst, int ind )
    //{
    //    UiclsJointHolderSummary sh = ilst.Item(ind);
    //    return "[" + sh.NDX.ToString().Trim() + "] " + sh.INITIALS.ToString() + " " + sh.LASTNAME.ToString();
    //    //return str=DisplayName;
    //}

    


    
}

转换器类

public class ShareholderCollectionConverter: ExpandableObjectConverter
{
    public override object ConvertTo(ITypeDescriptorContext context , CultureInfo culture , Object pvalue , Type destType )
    {
        if ((destType == typeof(string) )&& (pvalue.GetType()==typeof( ShareholderCollection)))
        {
            return "Joint Shareholders";
                
        }
        return base.ConvertTo(context, culture, pvalue, destType);


    }
}

属性类

ShareholderCollection JointHolder= new ShareholderCollection ();

[TypeConverter(typeof(ShareholderCollectionConverter))]
    [Category("23. Joint Members")]
    [DisplayName("10. Shareholders")]
    [Browsable(true)] 
    [ReadOnly(true)]
    public ShareholderCollection JointHolders
    {
        get
        {
            return JointHolder;
          
        }
        set { JointHolder = value; }
        
    }

在运行时分配的属性值

 clsJoinShareholderCollSub objJointShareholderCollSub = new clsJoinShareholderCollSub();
                        ShareholderCollection sb = objJointShareholderCollSub.getJointHolders(objUIclsFolio);
                        
                        objUIclsFolio.JointHolders = sb;
                        pgGeneralFrmFolio.SelectedObject = objUIclsFolio;
                        pgGeneralFrmFolio.Refresh();

标签： c#