二开案例.单据插件.切换视图

【应用场景】

通过插件的方式，切换单据视图，刷新单据界面。

【案例演示】

采购订单，通过下拉列表显示所有扩展上的视图，并且可任意切换视图。

【实现步骤】

<1>编写单据插件，代码如下。

using Kingdee.BOS;
using Kingdee.BOS.App.Data;
using Kingdee.BOS.Core.Bill;
using Kingdee.BOS.Core.Bill.PlugIn;
using Kingdee.BOS.Core.DynamicForm;
using Kingdee.BOS.Core.DynamicForm.PlugIn.Args;
using Kingdee.BOS.Core.DynamicForm.PlugIn.ControlModel;
using Kingdee.BOS.Core.Metadata;
using Kingdee.BOS.Orm.DataEntity;
using Kingdee.BOS.Util;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
namespace Jac.XkDemo.BOS.Business.PlugIn
{
    /// <summary>
    /// 【单据插件】切换视图
    /// </summary>
    [Description("【单据插件】切换视图"), HotUpdate]
    public class ChangeLayoutFormPlugIn : AbstractBillPlugIn
    {
        public override void AfterBindData(EventArgs e)
        {
            base.AfterBindData(e);
            BindComboField();
            var layoutId = Convert.ToString(this.View.OpenParameter.GetCustomParameter("Jac_LayoutId", true));
            if (!string.IsNullOrWhiteSpace(layoutId))
            {
                // 切换视图后，下拉列表绑定当前视图
                this.Model.DataObject["F_Jac_Combo"] = layoutId;
                this.View.UpdateView("F_Jac_Combo");
            }
        }
        public override void DataChanged(DataChangedEventArgs e)
        {
            base.DataChanged(e);
            if (e.Field.Key.EqualsIgnoreCase("F_Jac_Combo"))
            {
                var layoutId = e.NewValue as string;
                var para = new BillShowParameter();
                CopyCustomeParameter(para);
                para.OpenStyle.ShowType = ShowType.InCurrentForm;
                para.FormId = this.View.OpenParameter.FormId;
                para.DefaultBillTypeId = ((DynamicObject)this.Model.GetValue(this.View.BillBusinessInfo.GetBillTypeField())).ToString();
                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;
                para.CustomParams["Jac_LayoutId"] = layoutId;
                this.View.ShowForm(para);
            }
        }
        /// <summary>
        /// 复制用户定制的属性
        /// </summary>
        /// <param name="para"></param>
        private void CopyCustomeParameter(BillShowParameter para)
        {
            var openParamType = this.View.OpenParameter.GetType();
            var properties = openParamType.GetProperties();
            var 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[i