默认情况下，表单的数据模型创建及赋值由BOS基类实现，一些特殊场景需要在插件中动态创建及赋值绑定。

下面为动态表单“付款单明细列表”的表单插件，PurchaseServiceHelper.GetPayBillList获取要展示的数据，重写CreateNewData构建表单数据模型。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Kingdee.BOS.Util;
using Kingdee.BOS.Core;
using Kingdee.BOS.Core.Bill.PlugIn;
using Kingdee.BOS.Core.DynamicForm.PlugIn;
using Kingdee.BOS.Core.DynamicForm;
using Kingdee.BOS.Core.Metadata.FieldElement;
using Kingdee.BOS.Core.Metadata.StateTracker;
using Kingdee.BOS.Orm.DataEntity;
using Kingdee.BOS.ServiceHelper;
using Kingdee.BOS.Core.Metadata;
using Kingdee.BOS.Core.Bill;
using Kingdee.BOS.Orm;
using Kingdee.BOS.Orm.Metadata.DataEntity;
using Kingdee.BOS.Core.Metadata.EntityElement;
using Kingdee.BOS.Core.DynamicForm.PlugIn.ControlModel;
using Kingdee.BOS.JSON;
using Kingdee.BOS.Core.Const;
using Kingdee.BOS.Core.DynamicForm.PlugIn.Args;
using Kingdee.BOS.Core.Metadata.BarElement;
using Kingdee.BOS.Core.SqlBuilder;
using Kingdee.K3.SCM.ServiceHelper;
namespace Kingdee.K3.SCM.Purchase.Business.PlugIn
{public class PurPayBill : AbstractDynamicFormPlugIn{DynamicObjectCollection payBillData = null;public override void OnInitialize(BOS.Core.DynamicForm.PlugIn.Args.InitializeEventArgs e){if (e.Paramter.GetCustomParameter("SessionPayKey") == null){return;}string sessionKey = e.Paramter.GetCustomParameter("SessionPayKey").ToString();// 读取数据，返回的数据包，包含了必要的属性，可以直接使用payBillData = PurchaseServiceHelper.GetPayBillList(this.Context, Convert.ToInt64(sessionKey));}public override void CreateNewData(BOS.Core.DynamicForm.PlugIn.Args.BizDataEventArgs e){DynamicObjectType dtType = this.View.BusinessInfo.GetDynamicObjectType();EntryEntity recEntity = (EntryEntity)this.View.BusinessInfo.GetEntity("FPayDetailList");if (payBillData != null){DynamicObject objData = new DynamicObject(dtType);DynamicObject recObj = null;int seq = 1;foreach (DynamicObject dy in payBillData){recObj = new DynamicObject(recEntity.DynamicObjectType);recEntity.DynamicProperty.GetValue<DynamicObjectCollection>(objData).Add(recObj);recObj["BillNo"] = Convert.ToString(dy["FBILLNO"]);     //预收单号recObj["CURRENCY"] = dy["FCURRENCY"];   recObj["Date"] = dy["FDATE"];recObj["Seq"] = seq;       //行号recObj["Amount"] = dy["FREALPAYAMOUNTFOR"];              //实付金额recObj["ORGNAME"] = dy["FORGNAME"];              //结算组织seq++;}e.BizDataObject = objData;}}public override void AfterBindData(EventArgs e){int count = this.View.Model.GetEntryRowCount("FPayDetailList");for (int i = 0; i < payBillData.Count(); i++){this.View.GetFieldEditor<DecimalFieldEditor>("FAmount", i).Scale = Convert.ToInt16(payBillData[i]["FAMOUNTDIGITS"]);//设置精度}}}
}