【场景】实现一个表单操作，实现大部分表单、列表通用的逻辑，避免通过写表单插件、挂表单插件等频繁逻辑
【案例】自定义一个表单操作，实现打开下推界面（整单计算），显示下推界面得到选择的转换规则
<1>表单层操作代码案例
```chsarp
using Kingdee.BOS.BusinessEntity.ConvertTracker;
using Kingdee.BOS.Core;
using Kingdee.BOS.Core.DynamicForm;
using Kingdee.BOS.Core.List;
using Kingdee.BOS.Core.List.PlugIn.Args;
using Kingdee.BOS.Core.Metadata.ConvertElement.ServiceArgs;
using Kingdee.BOS.ServiceHelper;
using System;
using System.Collections.Generic;
using System.Linq;
namespace DynamicFormPlugIn.Operation
{
[System.ComponentModel.Description("自定义操作")]
public class CustomOperate_ShowPush : AbstractDynamicFormOperation
{
public override IFormOperation GetNewInstance()
{
return new CustomOperate_ShowPush();
}
/// <summary>
/// 创建操作结果
/// </summary>
/// <returns></returns>
protected override IOperationResult CreateOperationResult()
{
return base.CreateOperationResult();
}
/// <summary>
/// 验权
/// </summary>
/// <param name="result"></param>
/// <returns></returns>
protected override bool DoAuthPermission(IOperationResult result)
{
return base.DoAuthPermission(result);
}
/*
* Execute是操作实现的核心
* 包括创建操作结果-》验权-》表单插件操作前事件-》操作执行-》表单插件操作后事件
* 如无需要不建议重写此方法；
* 但是特别的：目前表单插件事件操作后事件仅支持同步触发，不支持在打开窗体异步回调的处理
* 可参考本案例实现，返回空结果，自行调用操作后事件
public override bool Execute()
{
return base.Execute();
}
*/
/// <summary>
/// 操作实现的核心
/// </summary>
/// <returns></returns>
protected override IOperationResult ExecuteOperation()
{
var selectedPkVal = GetPkIds();
if (selectedPkVal == null || selectedPkVal.Count <= 0)
return null;
/*
* 实现单据列表默认整单下推
*/
//<0>构造选中行，全部使用单据头实体
string formId = this.View.BillBusinessInfo.GetForm().Id;
List<ListSelectedRow> selectedRows = new List<ListSelectedRow>();
for (int i = 0; i < selectedPkVal.Count; ++i)
{
var pk = selectedPkVal[i];
var row = new ListSelectedRow(pk, string.Empty, i, formId);
selectedRows.Add(row);
}
GetConvertBusinessFlowsArgs getFlowArgs = new GetConvertBusinessFlowsArgs()
{
FormId = formId,
EntityKey = string.Empty,
Operation = FormOperationEnum.Push,
SelectedRows = selectedRows.ToArray(),
};
var getFlowResult = ConvertServiceHelper.GetConvertBusinessFlows(this.View.Context, getFlowArgs);
Dictionary<string, object> convertOpData = new Dictionary<string, object>();
convertOpData["SrcBillTypeId"] = getFlowResult.SrcBillTypeId;
convertOpData["SrcMainOrgId"] = getFlowResult.SrcMainOrgId;
convertOpData["Bills"] = getFlowResult.Bills;
convertOpData["ReplaceRelations"] = new List<ReplaceRelation>();//第三方下推关系
convertOpData["OptionalTargetOrgIds"] = new Dictionary<string, List<long>>();//插件限定的可选组织内码
convertOpData["SelectedRows"] = selectedRows; //选择的上游单据数据包，可以被插件修改
convertOpData["ThisViewSelectedRows"] = selectedPkVal; //原始数据，没有被插件修改
string sessionName = FormConst.ConvParamKey_BillsSessionName;
// 把可下推的单据放在交换区，供子页面取用
this.View.Session[sessionName] = convertOpData;
//打开单据转换操作界面，返回目标单Id
DynamicFormShowParameter param = new DynamicFormShowParameter();
param.FormId = FormIdConst.BOS_ConvertOpForm;
