在同一视图中调用多个SQL表
本文关键字:SQL 调用 视图 | 更新日期: 2023-09-27 18:25:19
我需要在一个视图中显示多个表。这似乎是一个问题,因为视图只允许根据我所能判断的一个模型定义。我尝试过实现一个变通解决方案,但没有成功。具体来说,我得到了错误消息:"传递到字典中的模型项的类型为"System.Data.Entity.DbSet 1[BillingApp.Models.HEADER_RECORD]', but this dictionary requires a model item of type 'System.Collections.Generic.IEnumerable
1[BillingApp.Models.tbl1join]"。"
查看
@model IEnumerable<BillingApp.Models.tbl1join>
@{
ViewBag.Title = "TABLE 01 DISPLAY";
Layout = "../Shared/Layout2.cshtml";
}
@section featured2 {
<html>
<body>
~excluding tables because there are too many fields~
</body></html>
}
类连接其中两个表(tbl1join.cs)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace BillingApp.Models
{
public class tbl1join
{
public HEADER_RECORD HeaderRecord { get; set; }
public HEADER_EXTENSION_RECORD ExtensionRecord { get; set; }
}
}
模型定义:
HEADER_RECORD.cs
namespace BillingApp.Models
{
using System;
using System.Collections.Generic;
public partial class HEADER_RECORD
{
public int HRID { get; set; }
public string TABLE_NUMBER { get; set; }
public string COMPANY { get; set; }
public string STATE_CODE { get; set; }
public string BILL_CODE { get; set; }
public string RECORD_TYPE { get; set; }
public string MASK_EXTENSION_ID { get; set; }
public string OVERPAYMENT_LIMIT { get; set; }
public string UNDERPAYMENT_LIMIT { get; set; }
public string REFUND_ACTION_OVR { get; set; }
public string REFUND_ACTION_PAR { get; set; }
public string REFUND_ACTION_RTN_PRM { get; set; }
public string REFUND_ACTION_CNC { get; set; }
public string EFT_PAC_OPTION { get; set; }
public string EFT_PAC_NOTICE { get; set; }
public string EFT_PAC_NSF_LIMIT { get; set; }
public string PREMIUM_ROUNDING { get; set; }
public string DB_CC_OPTION { get; set; }
public string NSF_CHECK_LIMIT { get; set; }
public string NSF_CHECK_OPTION { get; set; }
public string FIRST_TERM_BILLING { get; set; }
public string CARRY_DATE_OPTION { get; set; }
public string ENDORSEMENT_DAYS { get; set; }
public string DATE_METHOD { get; set; }
public string RENEWAL_OPTION { get; set; }
public string DROP_DAYS { get; set; }
public string MULTI_PAY_IND { get; set; }
public string MINIMUM_INSTALLMENT { get; set; }
public string ENDORSEMENT_ACTION { get; set; }
public string I_OR_S_OPTION_DAYS { get; set; }
public string S_OPTION_PERCENT { get; set; }
public string SERVICE_CHARGE_PREPAID { get; set; }
public string REINSTATE_OPTION { get; set; }
public string CASH_WITH_APPLICATION { get; set; }
public string DB_CC_NOTICE { get; set; }
public string DOWN_PAY_DAYS { get; set; }
public string MONTH_BY_TERM { get; set; }
public string LEAD_MONTHS { get; set; }
public string INITIAL_MONTHS { get; set; }
public string DB_CC_REJECTS { get; set; }
public string RETURN_ENDORSEMENT_OPTION { get; set; }
public string RETURN_SPLIT_OPTION_PERCENT { get; set; }
public string AUTOMATED_REFUND_DAYS { get; set; }
public string RENEWAL_OPTION_BILL_PLAN { get; set; }
public string EFFECTIVE_DATE { get; set; }
public string MISC_DATA { get; set; }
public string MISC_DATA2 { get; set; }
}
}
HEADER_EXTENSION_RECORD.cs
namespace BillingApp.Models
{
using System;
using System.Collections.Generic;
public partial class HEADER_EXTENSION_RECORD
{
public int ERID { get; set; }
public string ETABLE_NUMBER { get; set; }
public string ECOMPANY { get; set; }
public string ESTATE_CODE { get; set; }
public string EBILL_CODE { get; set; }
public string ERECORD_TYPE { get; set; }
public string EMASK_EXTENSION_ID { get; set; }
public string OVERPAYMENT_TOLERANCE_PERCENT { get; set; }
public string UNDERPAYMENT_TOLERANCE_PERCENT { get; set; }
}
}
控制器(BillingController.cs)
public ActionResult HeaderExtensionRecord()
{
{
return View(db.HEADER_EXTENSION_RECORD);
}
}
public ActionResult HeaderRecordTable1()
{
{
return View(db.HEADER_RECORD);
}
}
更新:
在控制器中添加了tbl1join作为返回类型,但给出了一个错误,称其为用作变量的类型。
public ActionResult HeaderRecordTable1()
{
{
return View(IEnumerable<tbl1join>);
}
}
将其包装到ViewModel 中
public class RecordVM
{
public HEADER_RECORD header { get; set; }
public HEADER_EXTENSION_RECORD ext { get; set; }
}
return View(new RecordVM { header = db.HEADER_RECORD, ext = db.HEADER_EXTENSION_RECORD });
错误消息表明您传入了错误的类型,您需要查询数据库并创建视图所需的合适模型。看起来您正试图使用视图模型tbl1join将2个模型传递给视图。
您可以为指定的id值填充视图模型,如下所示:
public ActionResult ViewModelExtension(int id)
{
var viewModel = new tbl1join();
viewModel.HEADER_RECORD = db.HEADER_RECORD.Where(h => h.id == id).SingleOrDefault;
viewModel.HEADER_EXTENSION_RECORD = db.HEADER_EXTENSION_RECORD.Where(h => h.id == id).SingleOrDefault;
return View(viewModel);
}
如果这两个模型之间没有某种关系,我会感到惊讶。如果这是在您的2个模型中指定的,那么以上操作可能会有所不同。