一、概述

本篇主要介绍单据插件.根据单据类型动态切换视图。

二、详情

客户案例：客户通过实体服务规则设置了单据类型在不同条件的值，在新增打开后，单据类型是按预期设置正确的，但单据类型对应的视图并未刷新。

以下通过【表单插件】方式实现动态切换视图，参考如下：

using Kingdee.BOS.Core.Bill;
using Kingdee.BOS.Core.Bill.PlugIn;
using Kingdee.BOS.Core.DynamicForm;
using Kingdee.BOS.Core.Metadata;
using Kingdee.BOS.Orm.DataEntity;
using Kingdee.BOS.Util;
using System;
using System.Collections.Generic;
using System.Linq;

namespace BOS.Debug.PCPlugIn
{
    /// <summary>
    /// 表单插件
    /// </summary>
    [System.ComponentModel.Description("表单插件---根据单据类型切换视图"),HotUpdate]
    public class BillPlugIn_BillTypeChangeView : AbstractBillPlugIn
    {
        public override void AfterBindData(EventArgs e)
        {
            base.AfterBindData(e); 
            
            //按单据类型切换视图（这里只是按当前案例需要放在AfterBindData，实际以业务需要调整如：BarItemClick）
            var billTypeId = ((DynamicObject)this.Model.GetValue("FBillTypeID"))[0] as String;
            this.BillTypeChanged(billTypeId); 
        }

        /// <summary>
        /// 获取单据类型对应的视图ID
        /// </summary>
        /// <param name="billTypeId">单据类型ID</param>
        /// <returns></returns>
        private string GetLayoutId(string billTypeId=null) {
            var billTypeField = this.View.BillBusinessInfo.GetBillTypeField();
            if (string.IsNullOrWhiteSpace(billTypeId))
            { 
                //获取单据类型ID
                //var enumList = billTypeField.BuildEnumList();
                billTypeId = ((DynamicObject)this.Model.GetValue(billTypeField))[0].ToString();
            }
            var BillType = billTypeField.BillTypeInfo.First(o => o["Id"].ToString() == billTypeId);
            var layoutId = BillType["LayoutSolution_Id"].ToString();
            return layoutId;
        }

        /// <summary>
        /// 切换单据类型（通过ShowForm刷新视图）
        /// </summary>
        /// <param name="billTypeId"></param>
        /// <param name="layoutId"></param>
        private void BillTypeChanged(string billTypeId)
        {
            //只在新增时可切换单据类型的视图
            if (this.View.OpenParameter.Status == OperationStatus.ADDNEW)
            {
                var layoutId = GetLayoutId(billTypeId);
                if (layoutId == this.View.OpenParameter.LayoutId) return;
                var para = new BillShowParameter();
                this.CopyCustomeParameter(para);
                para.OpenStyle.ShowType = ShowType.InCurrentForm;
                para.FormId = this.View.OpenParameter.FormId;
                para.DefaultBillTypeId = billTypeId;
                para.LayoutId = layoutId;
                para.Status = this.View.OpenParameter.Status;
                para.PKey = null;
                para.ParentPageId = this.View.OpenParameter.ParentPageId;
                // PageId必须确保一致
                para.PageId = this.View.PageId;
                // 本view标记为已经失效，需要重新构建
                this.View.OpenParameter.IsOutOfTime = true;
                this.View.ShowForm(para);
            }
        }

        /// <summary>
        /// 复制用户定制的属性
        /// </summary>
        /// <param name="para"></param>
        private void CopyCustomeParameter(BillShowParameter para)
        {
            Type openParamType = this.View.OpenParameter.GetType();
            var properties = openParamType.GetProperties();
            List<string> IsnotCustomerPropertyKeys = new List<string>() { "pk", "billType" };

            // 复制定制参数
            var customerParams = this.View.OpenParameter.GetCustomParameters();
            if (customerParams != null && customerParams.Count > 0)
            {
                foreach (var item in customerParams)
                {
                    if (IsnotCustomerPropertyKeys.Contains(item.Key)) continue;
                    if (item.Value == null) continue;
                    if (!(item.Value is string)) continue;            // 只复制字符串参数
                    var prop = properties.FirstOrDefault((p) => p.Name.EqualsIgnoreCase(item.Key));
                    if (prop != null) continue;
                    para.CustomParams[item.Key] = Convert.ToString(item.Value);
                }
            }
        }
    }
}

注：编译的组件需要放在站点的bin目录，并注册在【表单插件】中，保存后，记得IIS重启