Hello all,
Some of coolest topics , I came across, ExpandoObject in C#
dynamic dynamicObject = new ExpandoObject();
While addiing into code base, found compile time error,
Error CS0656 Missing compiler required member 'Microsoft.CSharp.RuntimeBinder.CSharpArgumentInfo.Create'
To over come from this, You need to add a reference to the DLL Microsoft.CSharp.dll.
It will resolve your compile time error, and you can take benifitws of ExpandoObject.
HttpPost. Many developers try to get the list of data through an array. But I'll tell you without using array also, we can get those list of model objects in a simpler way. Let's go step by step. Create an ASP.NET MVC 4 application. First, create two model classes, for example, EmployeeModelClass.cs and DepartmentModelClass.cs inside Model folder in solution.Controllerpublic class EmployeeModelClass { public string Name { get; set; } public string Address { get; set; } public string Contact { get; set; } public IEnumerable<DepartmentModelClass> DeptList { get; set; } } public class DepartmentModelClass { public string DepartmentCode { get; set; } public string DepartmentName { get; set; } }
public class EmployeeController : Controller
{
//
// GET: /Employee/
public ActionResult Index()
{
return View(new EmployeeModelClass());
}
[HttpPost]
public ActionResult Index(EmployeeModelClass emp, IEnumerable<DepartmentModelClass> dept)
{
emp.DeptList = dept;
return View(emp);
}
}
Employee details with list of department names which belong to that employee. The business logic is multiple departments should assign to a single employee.HttpPost Action, I am not using any array to get the Department list from view page while HttpPost. Simply, I am passing two parameters inHttpPost like below:[HttpPost]
public ActionResult Index(EmployeeModelClass emp, IEnumerable<DepartmentModelClass> dept)
{
emp.DeptList = dept;
return View(emp);
}
EmployeeModelClass emp and IEnumerable<DepartmentModelClass> dept. We can get the employee data from emp object and list of department data from dept object very easily here.for loop I am putting DepartmentCode and Departmentname four times. This property name should be the same as the property in Model object.@{
if (Model.Name != null)
{
<div>
Employee Name : @Model.Name <br/>
Address : @Model.Address <br/>
Contact : @Model.Contact <br/>
@{
if (Model.DeptList != null)
{
<table>
<tr>
<th>Dept code</th>
<th>Dept Name</th>
</tr>
@{
foreach (var dept in Model.DeptList)
{
<tr>
<td>@dept.DepartmentCode</td>
<td>@dept.DepartmentName</td>
</tr>
}
}
</table>
}
}
</div>
}
}
namespace MultipleModelsDemo.ViewModels{ public class IndexViewModel { public string HeaderText { get; set; } public TestOneModel TestOne { get; set; } public TestTwoModel TestTwo { get; set; } }}
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| using System.ComponentModel.DataAnnotations;namespace MultipleModelsDemo.ViewModels{ public class TestOneModel { [Required] public string PropertyOne { get; set; } [Required] public string PropertyTwo { get; set; } }} |
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| using System.ComponentModel.DataAnnotations;namespace MultipleModelsDemo.ViewModels{ public class TestTwoModel { [Required] public string PropertyThree { get; set; } [Required] public string PropertyFour { get; set; } }} |
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| using System;using System.Web.Mvc;using MultipleModelsDemo.ViewModels;namespace MultipleModelsDemo.Controllers{ public class HomeController : Controller { public ActionResult Index() { var model = new IndexViewModel(); model.HeaderText = "Strongly typed model used here, no view bag"; return View(model); } public ActionResult MyEditActionOne(IndexViewModel model) { if (ModelState.IsValid) { return View("Index", model); } throw new Exception("My Model state is not valid"); } }} |
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| @model MultipleModelsDemo.ViewModels.IndexViewModel<div> @using (Html.BeginForm("MyEditActionOne", "Home")) { <div> <h4>Send Model One</h4> <fieldset> @Html.ValidationSummary(true, "ValidationSummary") <ol> <li> @Html.LabelFor(m => m.TestOne.PropertyOne) @Html.TextBoxFor(m => m.TestOne.PropertyOne) @Html.ValidationMessageFor(m => m.TestOne.PropertyOne) </li> <li> @Html.LabelFor(m => m.TestOne.PropertyTwo) @Html.TextBoxFor(m => m.TestOne.PropertyTwo) @Html.ValidationMessageFor(m => m.TestOne.PropertyTwo) </li> </ol> </fieldset> <input class="btn" type="submit" value="Send" /> </div> }</div> |
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| <div> @using (Html.BeginForm("MyEditActionOne", "Home")) { <div> <h4>Send both Models</h4> <fieldset> @Html.ValidationSummary(true, "ValidationSummary") <ol> <li> @Html.LabelFor(m => m.TestOne.PropertyOne) @Html.TextBoxFor(m => m.TestOne.PropertyOne) @Html.ValidationMessageFor(m => m.TestOne.PropertyOne) </li> <li> @Html.LabelFor(m => m.TestOne.PropertyTwo) @Html.TextBoxFor(m => m.TestOne.PropertyTwo) @Html.ValidationMessageFor(m => m.TestOne.PropertyTwo) </li> <li> @Html.LabelFor(m => m.TestTwo.PropertyThree) @Html.TextBoxFor(m => m.TestTwo.PropertyThree) @Html.ValidationMessageFor(m => m.TestTwo.PropertyThree) </li> <li> @Html.LabelFor(m => m.TestTwo.PropertyFour) @Html.TextBoxFor(m => m.TestTwo.PropertyFour) @Html.ValidationMessageFor(m => m.TestTwo.PropertyFour) </li> </ol> </fieldset> <input class="btn" type="submit" value="Send" /> </div> }</div> |