一、说明

1. 通过判断关联数据包是否存在来确定是否下推而来

2. 判断整张单据是否下推而来，只要判断存在任何一个关联数据包即可

3. 判断分录是否下推而来，需要判断此分录下的关联数据包是否存在

二、判断代码类

使用了两种判断方式，一种调用封装好的接口，一种直接判断关联数据包

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Kingdee.BOS.Core.Metadata;
using Kingdee.BOS.Core.Metadata.EntityElement;
using Kingdee.BOS.Core.DependencyRules;
using Kingdee.BOS.ServiceHelper;
using Kingdee.BOS.Orm.DataEntity;
using Kingdee.BOS.Util;
namespace Kingdee.BOS.TestPlugIn.Common
{
    public class BillLinkUtil
    {
        /// <summary>
        /// 单据是否下推而来
        /// </summary>
        /// <param name="ctx"></param>
        /// <param name="bInfo"></param>
        /// <param name="dynObj">整单数据包</param>
        /// <returns></returns>
        public bool BillIsDraw(Context ctx,BusinessInfo bInfo, DynamicObject dynObj)
        {
            var linkEntity = bInfo.GetForm().LinkSet.LinkEntitys[0];
            var parentEntity = bInfo.GetEntity(linkEntity.ParentEntityKey);
            DynamicObject parentObj = null;//关联主实体数据包
            //关联主实体是单据头,绝大部分关联主实体为单据体，少部分为单据头
            if (parentEntity is HeadEntity)
            {
                parentObj = dynObj;
            }
            else
            {
                var entryDynObjs = parentEntity.DynamicProperty.GetValue(dynObj) as DynamicObjectCollection;
                parentObj = entryDynObjs[0];
            }
            var isLink = this.IsLink(linkEntity, parentObj);
            //或通过调用接口判断
            var isLink2 = this.IsLinkByInterface(ctx,bInfo, parentEntity, parentObj);
            return isLink;
        }
       
        /// <summary>
        /// 判断每行是否下推而来
        /// </summary>
        /// <param name="ctx"></param>
        /// <param name="bInfo"></param>
        /// <param name="dynObj"></param>
        public void EntryIsDraw(Context ctx, BusinessInfo bInfo, DynamicObject dynObj)
        {
            var linkEntity = bInfo.GetForm().LinkSet.LinkEntitys[0];
            var parentEntity = bInfo.GetEntity(linkEntity.ParentEntityKey);
            var entryDynObjs = parentEntity.DynamicProperty.GetValue(dynObj) as DynamicObjectCollection;
            //判断每行分录是否下推而来
            foreach (var entryObj in entryDynObjs)
            {
                var isLink = this.IsLink(linkEntity, entryObj);
                //或通过调用接口判断
                var isLink2 = this.IsLinkByInterface(ctx,bInfo, parentEntity, entryObj);
            }
        }
        /// <summary>
        /// 调用接口判断是否关联
        /// </summary>
        /// <param name="ctx"></param>
        /// <param name="bInfo"></param>
        /// <param name="parentEntity">关联主实体</param>
        /// <param name="parentObj">关联主实体对应的主数据包</param>
        /// <returns></returns>
        public bool IsLinkByInterface(Context ctx, BusinessInfo bInfo, Entity parentEntity, DynamicObject parentObj)
        {
            var dynamicRow = new BOSDynamicRow(parentObj, parentEntity.Key, bInfo);
            var isDraw = ConvertServiceHelper.IsDraw(ctx, bInfo, dynamicRow);
            return isDraw;
        }
        /// <summary>
        /// 是否关联
        /// </summary>
        /// <param name="linkEntity"></param>
        /// <param name="parentObj">关联主实体对应的主数据包</param>
        /// <returns></returns>
        private bool IsLink(LinkEntity linkEntity, DynamicObject parentObj)
        {
            var linkDynObjs = parentObj[linkEntity.Key] as DynamicObjectCollection;
            if (linkDynObjs != null && linkDynObjs.Count > 0)
            {
                var sId = Convert.ToString(linkDynObjs[0]["SId"]);
                if (!(sId.IsNullOrEmptyOrWhiteSpace() || sId == "0"))
                {
                    return true;
                }
            }
            return false;
        }
    }
}

三、插件中调用代码

1. 表单插件调用代码

  BillLinkUtil linkUtil = new BillLinkUtil();
  linkUtil.BillIsDraw(this.Context,this.View.BillBusinessInfo, this.Model.DataObject);
  linkUtil.EntryIsDraw(this.Context, this.View.BillBusinessInfo, this.Model.DataObject);

   2. 操作插件调用代码

 BillLinkUtil linkUtil = new BillLinkUtil();
 linkUtil.BillIsDraw(this.Context,this.BusinessInfo, e.DataEntitys[0]);
 linkUtil.EntryIsDraw(this.Context,this.BusinessInfo, e.DataEntitys[0])