【应用场景】

通过工序计划下推生成的二开单据（配置转换规则），下推行的问题，因为工序计划的特殊性（单据头单据体子单据体三层结构），下推的时候默认都是找第一行数据。所以需要二开代码特殊处理下。

【实现步骤】

<1>配置好工序计划到二开单据的单据转换规则

<2>编写二开插件，参考示例如下：

using Kingdee.BOS.Core;
using Kingdee.BOS.Core.Const;
using Kingdee.BOS.Core.Metadata.ConvertElement.PlugIn.Args;
using Kingdee.BOS.Core.Metadata.EntityElement;
using Kingdee.BOS.Orm.DataEntity;
using Kingdee.BOS.Util;
using Kingdee.K3.Core.MFG.EnumConst;
using Kingdee.K3.MFG.App;
using Kingdee.K3.MFG.App.ConvertPlugIn;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using Kingdee.BOS;
using Kingdee.BOS.Core.Metadata;
using Kingdee.K3.Core.MFG.EntityHelper;
using Kingdee.K3.MFG.SFC.App.BillConvertServicePlugIn.Utils;
using Kingdee.K3.Core.MFG;

namespace Kingdee.K3.MFG.SFC.App.BillConvertServicePlugIn
{
    public class Class1 : BaseBillConvertServicePlugIn
    {

        /// <summary>
        /// 下推、从选单界面选择行返回后
        /// </summary>
        /// <param name="e"></param>
        public override void OnInSelectedRow(InSelectedRowEventArgs e)
        {
            base.OnInSelectedRow(e);
            string subFilter = GetPlanSubEntryFilter(e);
            if (!subFilter.IsNullOrEmpty()) e.InSelectedRowsSQL = e.InSelectedRowsSQL.JoinFilterString(subFilter, "AND");

        }

        /// <summary>
        /// 获取源单中子单据体选择行的过滤条件
        /// </summary>
        /// <param name="e">下推事件</param>
        /// <returns>过滤条件</returns>
        private string GetPlanSubEntryFilter(BOS.Core.Metadata.ConvertElement.PlugIn.Args.InSelectedRowEventArgs e)
        {
            string filterStr = string.Empty;
            List<long> detailIds = new List<long>();
            string subEntityKey = "FSubEntity";
            Entity subEntity = e.SourceBusinessInfo.GetEntity(subEntityKey);

            foreach (var selectRow in e.SelectedRows)
            {
                string detailId = "0";
                //从选择行中获取子弹据体主键
                if (selectRow.FieldValues.TryGetValue(subEntityKey, out detailId))
                {
                    detailIds.Add(Convert.ToInt64(detailId));
                }
            }

            if (detailIds.Count > 0)
            {
                //生成过滤条件：FSubEntity_FDetailId in (10001,10002)
                filterStr = string.Format("{0}_{1} in ({2})",
                subEntityKey, subEntity.EntryPkFieldName, string.Join(",", detailIds));
            }
            return filterStr;
        }
    }
}

<3>BOSIDE上面注册二开插件，保存，重启IIS

【参考资料】

【二开案例.基础资料.联动查询(GetValue)】

https://vip.kingdee.com/article/127710528226504960

【金蝶云星空BOS二次开发案例演示】

https://vip.kingdee.com/article/94751030918525696