/// <summary>
        /// 新增表单实例,新增表单实体对象
        /// </summary>
        public int SaveFormInstance(BizDataContext db)
        {
            SysFormInstance fi = new SysFormInstance()
            {
                FormInstanceId = db.GetNextIdentity_Int(),
                FormId         = this.FormId,
                //--------------//
                FormDate        = Convert.ToDateTime(this.lblFormDate.Text.Trim()),
                FormCode        = this.lblFormCode.Text.Trim(),
                FormDescription = Server.HtmlDecode(this.lblFormDescription.Text.Trim()).Replace("<br />", "\r\n"),
                FormTitle       = this.lblFormTitle.Text.Trim(),
                State           = (int)FormInstanceState.New,
                //---------------//
                CreateTime   = DateTime.Now,
                CreateUserId = this.BasePage.LoginUserID,
                OwnerId      = this.BasePage.LoginUserID,
            };

            #region 收集实体字段的值,创建实体对象
            List <SysFormField>         ffList    = db.Where <SysFormField>(p => p.FormId == this.FormId);
            Dictionary <string, object> valueDict = new Dictionary <string, object>();
            foreach (var ff in ffList)
            {
                string          controlId = string.Format("ff_{0}", ff.FormFieldId);
                IDrisionControl control   = this.BasePage.GetControlById <IDrisionControl>(controlId);
                if (control == null)
                {
                    throw new Exception("表单控件解析出错");
                }
                valueDict[control.FieldName] = control.GetValue();
            }
            SysEntity entity = this.BasePage.EntityCache.FindById <SysEntity>(this.EntityId);
            if (entity != null) //元数据预置实体,利用EntitySchema创建对象插入
            {
                var es = IEntitySchemaHelper.Get(this.EntityId);
                if (es == null)
                {
                    throw new Exception("元数据实体EntitySchema找不到");
                }

                object obj      = es.CreateInstance();
                int    objectId = db.GetNextIdentity_Int();
                obj.SetPropertyConvertValue(es.KeyName, objectId); //主键
                foreach (var p in valueDict)
                {
                    obj.SetPropertyConvertValue(p.Key, p.Value);
                }

                //一些默认字段
                if (es.RequiredLevel() != RequireLevelEnum.PlatForm)
                {
                    if (obj.GetPropertyValue(ConstFieldNames.CreateTime) == null)
                    {
                        obj.SetPropertyConvertValue(ConstFieldNames.CreateTime, DateTime.Now);
                    }
                    if (obj.GetPropertyValue(ConstFieldNames.CreateUserId) == null)
                    {
                        obj.SetPropertyConvertValue(ConstFieldNames.CreateUserId, this.BasePage.LoginUserID);
                    }
                    if (obj.GetPropertyValue(ConstFieldNames.OwnerId) == null)
                    {
                        obj.SetPropertyConvertValue(ConstFieldNames.OwnerId, this.BasePage.LoginUserID);
                    }
                    if (obj.GetPropertyValue(ConstFieldNames.State) == null)
                    {
                        obj.SetPropertyConvertValue(ConstFieldNames.State, 0);
                    }
                    if (obj.GetPropertyValue(ConstFieldNames.StateDetail) == null)
                    {
                        obj.SetPropertyConvertValue(ConstFieldNames.StateDetail, 0);
                    }
                }

                db.Insert(obj);

                fi.ObjectId = objectId;
            }
            else //自定义实体
            {
                entity      = this.DataHelper.FindById <SysEntity>(this.EntityId);
                fi.ObjectId = db.DynamicInsert(entity, valueDict);
            }
            #endregion

            db.Insert(fi);
            return(fi.FormInstanceId);
        }