我是ASP.Net MVC的新手。我有三種型號Employee,Address,Store。該結構如下...一個視圖中的多個模型ASP.Net
EMPLOYEE:-
EmpID(PK), EmpName, Rank, StoreID, AddID
STORE:-
StoreID(pk), BranchName, AddID
ADDRESS:-
AddId(pk), Address, Phone, ID(fk EMPLOYEE.EmpID, fk STORE.StoreID)
如何使用這三種車型在一個控制器以及如何在控制器執行CRUD操作。在Employee的視圖中，我想顯示所有三種模型的所有字段，例如
EmpID, EmpName, Rank, Store.BranchName, Address, Phone
當我在視圖中更新這些字段時，應更新所有模型。我知道如何使用多個模型而沒有它們之間的關係。 謝謝。
這是視圖模型派上用場的地方。它允許您將數據庫層字段和邏輯與表示層字段分開。
您可以組合多個數據庫實體，只顯示要在前端顯示的每個實體的元素。
例如，你可以定義你的瀏覽模式，如：
public class EmployeeInfo
{
public string EmployeeName {get;set;}
// other properties
public EmployeeInfo(Employee emp, Store store, Address address)
{
EmployeeName = emp.EmpName;
// assign other properties
}
}
然後，在你的控制器，你可以創建視圖模型，並將其傳遞給視圖：
public class EmployeeController
{
public IActionResult Index()
{
var empInfo = new EmployeeInfo(employee, store, address); // retrieved from database somehow
return View(empInfo);
}
}
然後，您的視圖可以引用視圖模型並像通常那樣使用屬性。
員工有地址&商店，
型號
namespace Tester.Models
{
public class EMPLOYEEVIEWMODEL
{
public int EmpID { get; set; }
public string EmpName { get; set; }
public int Rank { get; set; }
public ADDRESSVIEWMODEL Address { get; set; }
public STOREVIEWMODEL Store { get; set; }
}
public class STOREVIEWMODEL
{
public int StoreID { get; set; }
public string BranchName { get; set; }
}
public class ADDRESSVIEWMODEL
{
public int AddId { get; set; }
public string Address { get; set; }
public string Phone { get; set; }
}
}
控制器
namespace Tester.Controllers
{
public class EmployeeController : Controller
{
//
// GET: /Employee/
public ActionResult Add()
{
return View();
}
}
}
查看
關係@using Tester.Models;
@model EMPLOYEEVIEWMODEL
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Add</title>
</head>
<body>
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
<div class="form-group">
@Html.LabelFor(model => model.EmpName, htmlAttributes: new { @class = "control-label col-md-4" })
<div class="col-md-4">
@Html.TextAreaFor(model => model.EmpName, new { @class = "form-control input-sm" })
@Html.ValidationMessageFor(model => model.EmpName, "", new { @class = "help-block" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Rank, htmlAttributes: new { @class = "control-label col-md-4" })
<div class="col-md-4">
@Html.TextAreaFor(model => model.Rank, new { @class = "form-control input-sm" })
@Html.ValidationMessageFor(model => model.Rank, "", new { @class = "help-block" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Store.BranchName, htmlAttributes: new { @class = "control-label col-md-4" })
<div class="col-md-4">
@Html.TextAreaFor(model => model.Store.BranchName, new { @class = "form-control input-sm" })
@Html.ValidationMessageFor(model => model.Store.BranchName, "", new { @class = "help-block" })
</div>
</div>}
<div class="form-group">
@Html.LabelFor(model => model.Address.Address, htmlAttributes: new { @class = "control-label col-md-4" })
<div class="col-md-4">
@Html.TextAreaFor(model => model.Address.Address, new { @class = "form-control input-sm" })
@Html.ValidationMessageFor(model => model.Address.Address, "", new { @class = "help-block" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Address.Phone, htmlAttributes: new { @class = "control-label col-md-4" })
<div class="col-md-4">
@Html.TextAreaFor(model => model.Address.Phone, new { @class = "form-control input-sm" })
@Html.ValidationMessageFor(model => model.Address.Phone, "", new { @class = "help-block" })
</div>
</div>
<input id="Submit" type="submit" value="submit" />
</body>
</html>
請看看這個&讓我知道您的反饋
使用動態模型
模型
public class Teacher
{
public int TeacherId { get; set; }
public string Code { get; set; }
public string Name { get; set; }
}
public class Student
{
public int StudentId { get; set; }
public string Code { get; set; }
public string Name { get; set; }
public string EnrollmentNo { get; set; }
}
Controller Code
public class HomeController : Controller
{
public ActionResult Index()
{
ViewBag.Message = "Welcome to my demo!";
dynamic mymodel = new ExpandoObject();
mymodel.Teachers = GetTeachers();
mymodel.Students = GetStudents();
return View(mymodel);
}
}
我們可以定義我們的動態模型（不是一個強類型的模型）使用@model動態關鍵字。
View Code
@using MultipleModelInOneView;
@model dynamic
@{
ViewBag.Title = "Home Page";
}
<h2>@ViewBag.Message</h2>
<p><b>Teacher List</b></p>
<table>
<tr>
<th>Id</th>
<th>Code</th>
<th>Name</th>
</tr>
@foreach (Teacher teacher in Model.Teachers)
{
<tr>
<td>@teacher.TeacherId</td>
<td>@teacher.Code</td>
<td>@teacher.Name</td>
</tr>
}
學生名單
標識 代碼 名稱 招生沒有 @foreach（斯圖登在Model.Students噸學生） { @ student.StudentId @ student.Code @ student.Name @ student.EnrollmentNo }
收件一類與3-屬性和每個屬性是你的每個模型的類型。所以這個類包裝了所有3個模型使用這個包裝類來玩。此包裝類在MVC中被稱爲ViewModel ...使用此視圖模型將數據從控制器傳遞到視圖.. –