我使用.NET API来使用它。但是代码不起作用。你可以给我解决下面的代码吗？
// State object
List<SelectListItem> state = new List<SelectListItem>();
// Client
HttpClient client1 = new HttpClient();
client1.BaseAddress = new Uri("http://localhost:2585/");
// JSON type
client1.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json")
);
// Web API controller
var response1 = client1.GetAsync("api/State");
if (response1.IsSuccessStatusCode) // Response type
{
state = JsonConvert.DeserializeObject<List<SelectListItem>>(response1.Content.ReadAsStringAsync().Result);
return Json(state, JsonRequestBehavior.AllowGet);
答案 0 :(得分：0)
[HttpGet]
public ActionResult Index()
{
List<Student> EmpInfo = new List<Student>();
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:2585/");
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
var response = client.GetAsync("api/StudentApi").Result;
if (response.IsSuccessStatusCode)
{
EmpInfo = JsonConvert.DeserializeObject<List<Student>>(response.Content.ReadAsStringAsync().Result);
return View(EmpInfo);
}
return View();
}
[HttpGet]
public PartialViewResult Edit(int id)
{
StudentViewModel EmpInfo = new StudentViewModel();
HttpClient client1 = new HttpClient();
client1.BaseAddress = new Uri("http://localhost:2585/");
client1.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
var responsecountry = client1.GetAsync("api/Country/").Result;
List<SelectListItem> country = new List<SelectListItem>();
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:2585/");
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
var response = client.GetAsync("api/StudentApi/" + id).Result;
if (response.IsSuccessStatusCode)
{
EmpInfo = JsonConvert.DeserializeObject<StudentViewModel>(response.Content.ReadAsStringAsync().Result);
if (responsecountry.IsSuccessStatusCode)
{
country = JsonConvert.DeserializeObject<List<SelectListItem>>(responsecountry.Content.ReadAsStringAsync().Result);
EmpInfo.Country = country;
}
return PartialView(EmpInfo);
}
return PartialView();
}
public ActionResult Create()
{
StudentViewModel student = new StudentViewModel();
List<SelectListItem> country = new List<SelectListItem>();
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:2585/");
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
var response = client.GetAsync("api/Country/").Result;
List<SelectListItem> state = new List<SelectListItem>();
HttpClient client1 = new HttpClient();
client1.BaseAddress = new Uri("http://localhost:2585/");
client1.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
if (response.IsSuccessStatusCode)
{
country = JsonConvert.DeserializeObject<List<SelectListItem>>(response.Content.ReadAsStringAsync().Result);
student.Country = country;
var response1 = client1.GetAsync("api/State/" + Convert.ToInt32(country.FirstOrDefault().Value)).Result;
if (response1.IsSuccessStatusCode)
{
state = JsonConvert.DeserializeObject<List<SelectListItem>>(response1.Content.ReadAsStringAsync().Result);
student.State = state;
}
}
return View(student);
}
public JsonResult GetStates(int countryId)
{
List<SelectListItem> state = new List<SelectListItem>();
HttpClient client1 = new HttpClient();
client1.BaseAddress = new Uri("http://localhost:2585/");
client1.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
var response1 = client1.GetAsync("api/State/" + countryId).Result;
if (response1.IsSuccessStatusCode)
{
state = JsonConvert.DeserializeObject<List<SelectListItem>>(response1.Content.ReadAsStringAsync().Result);
return Json(state, JsonRequestBehavior.AllowGet);
}
return Json(state);
}
[HttpPost]
public ActionResult Create(Student student)
{
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:2585/");
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
HttpResponseMessage response = client.PostAsJsonAsync("api/StudentApi", student).Result;
if (response.IsSuccessStatusCode)
{
return RedirectToAction("Index");
}
return null;
}
[HttpPost]
public ActionResult Update(StudentViewModel student)
{
HttpClient client = new HttpClient();
client.BaseAddress = new Uri("http://localhost:2585/");
client.DefaultRequestHeaders.Accept.Add(
new MediaTypeWithQualityHeaderValue("application/json"));
var stu = new Student()
{
Id = student.Id,
FirstName = student.FirstName,
LastName = student.LastName,
DateOfBirth = student.DateOfBirth,
Email = student.Email,
Phone = student.Phone,
CountryId = student.CountryId
};
HttpResponseMessage response = client.PutAsJsonAsync("api/StudentApi/", stu).Result;
if (response.IsSuccessStatusCode)
{
return RedirectToAction("Index");
}
return null;
}
[HttpPost]
public JsonResult EmailExists(string email)
{
return Json(!String.Equals(email, "h@h.com", StringComparison.OrdinalIgnoreCase));
//var user = Membership.GetUser(UserName);
//return Json(user == null);
}
}
-----------
Create
-----------
@model Practice.Web.Models.StudentViewModel
@{
ViewBag.Title = "Create";
}
<h2>Create</h2>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>SignUp</title>
<script src="@Url.Content("~/Scripts/jquery-1.12.4.js")"></script>
<script type="text/javascript">
$(document).ready(function () {
//Dropdownlist Selectedchange event
$("#CountryId").change(function () {
$("#StateId").empty();
$.ajax({
type: 'GET',
url: '@Url.Action("GetStates")', // we are calling json method
dataType: 'json',
data: { countryId: $("#CountryId").val() },
success: function (state) {
//debugger;
$.each(state, function (i, s) {
$("#StateId").append('<option value="' + s.Value + '">' +
s.Text + '</option>');
});
},
error: function (ex) {
alert('Failed to retrieve states.' + ex);
}
});
return false;
})
});
</script>
@section Scripts {
@Scripts.Render("~/bundles/jqueryval")
}
</head>
<body>
@using (Html.BeginForm("Create", "Student", FormMethod.Post))
{
<table cellpadding="0" cellspacing="0">
<tr>
<th colspan="2" align="center">Person Details</th>
</tr>
<tr>
<td>First Name: </td>
<td>
@Html.TextBoxFor(m => m.FirstName)
</td>
</tr>
<tr>
<td>Last Name: </td>
<td>
@Html.TextBoxFor(m => m.LastName)
</td>
</tr>
<tr>
<td>Date Of Birth: </td>
<td>
@Html.TextBoxFor(m => m.DateOfBirth)
</td>
</tr>
<tr>
<td>Email: </td>
<td>
@Html.TextBoxFor(m => m.Email)
@Html.ValidationMessageFor(model => model.Email)
</td>
</tr>
<tr>
<td>Phone: </td>
<td>
@Html.TextBoxFor(m => m.Phone)
</td>
</tr>
<tr>
<td>Country: </td>
<td>
@Html.DropDownListFor(m => m.CountryId, Model.Country)
</td>
</tr>
<tr>
<td>State: </td>
<td>
@Html.DropDownListFor(m => m.StateId, Model.State)
</td>
</tr>
<tr>
<td></td>
<td><input type="submit" value="Submit" /></td>
</tr>
</table>
}
</body>
</html>
-----------------
Edit
---------------------
@model Practice.Web.Models.StudentViewModel
@{
ViewBag.Title = "Edit";
}
<style>
.button {
background-color: #4CAF50; /* Green */
border: none;
color: white;
padding: 15px 32px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 16px;
margin: 4px 2px;
cursor: pointer;
}
.button1 {
border-radius: 2px;
}
.button2 {
border-radius: 4px;
}
.button3 {
border-radius: 8px;
}
.button4 {
border-radius: 12px;
}
.button5 {
border-radius: 50%;
}
</style>
<div class="modal-body">
@using (Ajax.BeginForm("Update", new AjaxOptions { InsertionMode = InsertionMode.Replace, UpdateTargetId = "divEmp" }))
{
<table cellpadding="0" cellspacing="0">
<tr>
<th colspan="2" align="center">Person Details</th>
@Html.HiddenFor(m => m.Id)
</tr>
<tr>
<td>First Name: </td>
<td>
@Html.TextBoxFor(m => m.FirstName)
</td>
</tr>
<tr>
<td>Last Name: </td>
<td>
@Html.TextBoxFor(m => m.LastName)
</td>
</tr>
<tr>
<td>Date Of Birth: </td>
<td>
@Html.TextBoxFor(m => m.DateOfBirth)
</td>
</tr>
<tr>
<td>Email: </td>
<td>
@Html.TextBoxFor(m => m.Email)
@Html.ValidationMessageFor(model => model.Email)
</td>
</tr>
<tr>
<td>Phone: </td>
<td>
@Html.TextBoxFor(m => m.Phone)
</td>
</tr>
<tr>
<td>Country: </td>
<td>
@Html.DropDownListFor(m => m.CountryId, Model.Country, new SelectListItem { Value = Model.CountryId.ToString() })
</td>
</tr>
<tr>
<td></td>
<td><input type="submit" value="Submit" id="btnHideModal" /></td>
</tr>
</table>
}
</div>
<div class="modal-footer">
<button type="submit" class="btn btn-primary button button4">Update</button>
<button type="button" class="btn btn-primary button button4">
Hide
</button>
</div>
<script type="text/javascript">
$(document).ready(function () {
//$("#btnShowModal").click(function () {
$("#loginModal").modal('show');
//});
$("#btnHideModal").click(function () {
$("#loginModal").modal('hide');
});
});
</script>
----------------------
Edit
---------------------
@model IEnumerable<Practice.Entity.Student>
@{
ViewBag.Title = "Index";
}
<html>
<head>
<script src="~/Scripts/jquery-1.12.4.js"></script>
<script src="~/Scripts/jquery.unobtrusive-ajax.js"></script>
<link href="~/Content/bootstrap.min.css" rel="stylesheet" />
@*<script src="@Url.Content("~/Scripts/jquery-1.7.1.min.js")" type="text/javascript"></script>
<script src="@Url.Content("~/Scripts/jquery-ui-1.8.20.min.js")" type="text/javascript"></script>
<link href="@Url.Content("~/Content/themes/base/jquery-ui.min.css") rel=" stylesheet" type="text/css" />
<script>
$(document).ready(function () {
//$(".editDialog").live("click", function (e) {
$(".editDialog").click(function (e) {
debugger;
var url = $(this).attr('href');
$("#dialog-edit").dialog({
title: 'Edit Employee Detail',
autoOpen: false,
resizable: false,
height: 455,
width: 550,
show: { effect: 'drop', direction: "up" },
modal: true,
draggable: true,
open: function (event, ui) {
debugger;
$(this).load(url);
},
close: function (event, ui) {
$(this).dialog('close');
}
});
$("#dialog-edit").dialog('open');
return false;
});
});
</script>*@
</head>
<body id="divEmp">
<h2>Index</h2>
@Html.ActionLink("Create Student", "Create", "Student")
<div id="dialog-edit">
</div>
<table>
<tr>
<td>First Name</td>
<td>Last Name</td>
<td>DOB</td>
</tr>
@foreach (var item in Model)
{
<tr>
<td>@item.FirstName</td>
<td>@item.LastName</td>
<td>@item.DateOfBirth</td>
<td>
@*@Html.ActionLink("Edit", "Edit", new { id = @item.Id }, new { @class = "editDialog" })*@
<a class="editDialog">Edit</a>
</td>
</tr>
}
</table>
<div class="modal fade" tabindex="-1" id="loginModal"
data-keyboard="false" data-backdrop="static">
<div class="modal-dialog modal-lg">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal">
×
</button>
<h4 class="modal-title">Satya Login</h4>
<div id="divHtml"></div>
</div>
</div>
</div>
</div>
</body>
</html>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js">
</script>
<script src="~/Scripts/bootstrap.min.js"></script>
<script type="text/javascript">
$(document).ready(function () {
$(".editDialog").click(function () {
$("#loginModal").modal('show');
$.ajax({
url: '/Student/Edit/1',
contentType: 'application/html; charset=utf-8',
type: 'GET'
})
.success(function (result) {
$('#divHtml').html(result);
})
.error(function (xhr, status) {
alert(status);
});
});
$("#btnHideModal").click(function () {
$("#loginModal").modal('hide');
});
});
</script>