ASP.NET MVC 2 in Action読書ノート[4]

25272 ワード

asp.net

Chapter04:
ControllerExamples
Index.aspx:

<h2>Index</h2>

    <%if (TempData.ContainsKey("message"))

{%>

    <p class="input-validation-success"><%=TempData["message"]%></p>

    <%} %>

    <table>

        <tr>

            <th>

                Username

            </th>

            <th>

                Name

            </th>

        </tr>

    <% foreach (var item in Model) { %>

        <tr>

            <td>

                <%= Html.Encode(item.Username) %>

            </td>

            <td>

                <%= Html.Encode(item.Name) %>

            </td>

        </tr>

    <% } %>

    </table>

.csharpcode, .csharpcode pre
{
font-size: small;
color: black;
font-family: consolas, "Courier New", courier, monospace;
background-color: #ffffff;
/*white-space: pre;*/
}
.csharpcode pre { margin: 0em; }
.csharpcode .rem { color: #008000; }
.csharpcode .kwrd { color: #0000ff; }
.csharpcode .str { color: #006080; }
.csharpcode .op { color: #0000c0; }
.csharpcode .preproc { color: #cc6633; }
.csharpcode .asp { background-color: #ffff00; }
.csharpcode .html { color: #800000; }
.csharpcode .attr { color: #ff0000; }
.csharpcode .alt
{
background-color: #f4f4f4;
width: 100%;
margin: 0em;
}
.csharpcode .lnum { color: #606060; }
Display.aspx:

<h2>Display</h2>

    <fieldset>

        <legend>Fields</legend>

<p>

            Username:

            <%= Html.Encode(Model.Username) %>

        </p>

<p>

            Name:

            <%= Html.Encode(Model.Name) %>

        </p>

    </fieldset>

<h2>Edit</h2>

    <% using (Html.BeginForm()) {%>

        <%= Html.ValidationSummary("Edit was unsuccessful. Please correct the errors and try again.") %>

        <fieldset>

            <legend>Fields</legend>

<p>

                <label for="Username">Username:</label>

                <%= Html.TextBox("Username", Model.Username) %>

                <%= Html.ValidationMessage("Username", "*") %>

            </p>

<p>

                <label for="FirstName">FirstName:</label>

                <%= Html.TextBox("FirstName", Model.FirstName) %>

                <%= Html.ValidationMessage("FirstName", "*") %>

            </p>

<p>

                <label for="LastName">LastName:</label>

                <%= Html.TextBox("LastName", Model.LastName) %>

                <%= Html.ValidationMessage("LastName", "*") %>

            </p>

<p>

                <input type="submit" value="Save" />

            </p>

        </fieldset>

    <% } %>

    <div>

        <%=Html.ActionLink("Back to List", "Index") %>

    </div>

public class UserController : Controller

        public ActionResult Index()

            IEnumerable<User> users =

                UserRepository.GetAll();

            UserDisplay[] viewModel = users.Select(

                user => new UserDisplay

                                Username = user.Username,

                                Name =

                                    user.FirstName + " " +

                                    user.LastName

                            }).ToArray();

            return View(viewModel);

        [HttpGet]

        public ActionResult Display(int Id)

            User user = UserRepository.GetById(Id);

            var viewModel = new UserDisplay

                                    Username = user.Username,

                                    Name =

                                        user.FirstName + " " +

                                        user.LastName

};

            return View(viewModel);

        [HttpGet]

        public ActionResult Edit(int Id)

            User users = UserRepository.GetById(Id);

            var viewModel = new UserInput

                                    Username =

                                        users.Username,

                                    FirstName =

                                        users.FirstName,

                                    LastName =

                                        users.LastName,

};

            return View(viewModel);

        [HttpPost]

        public ActionResult Edit(UserInput input)

            if (ModelState.IsValid)

                UpdateUserFromInput(input);

                TempData["message"] = "The user was updated";

                return RedirectToAction("index");

            return View(input);

        private void UpdateUserFromInput(UserInput input)

            User user =

                UserRepository.GetByUsername(input.Username);

            user.FirstName = input.FirstName;

            user.LastName = input.LastName;

            UserRepository.Save(user);

    public class UserDisplay

        public string Username { get; set; }

        public string Name { get; set; }

    public class UserInput

        [Required]

        public string Username { get; set; }

        public string FirstName { get; set; }

        public string LastName { get; set; }

    public static class UserRepository

        public static IEnumerable<User> GetAll()

            return new[]

                           new User

                                   Username = "FFlintstone",

                                   FirstName = "Fred",

                                   LastName = "Flintstone"

},

                           new User

                                   Username = "brubble",

                                   FirstName = "Barney",

                                   LastName = "Rubble"

},

                           new User

                                   Username = "bbrubble",

                                   FirstName = "Bamm-Bamm",

                                   LastName = "Rubble"

},

                           new User

                                   Username = "wilma",

                                   FirstName = "Wilma",

                                   LastName = "Flintstone"

},

                           new User

                                   Username = "pebbles",

                                   FirstName = "Pebbles",

                                   LastName = "Flintstone"

},

                           new User

                                   Username = "dino",

                                   FirstName = "Dino",

                                   LastName = "Flintstone"

},

};

        public static User GetById(int id)

            if (id == 2)

                return new User();

            return new User

                           Username = "FFlintstone",

                           FirstName = "Fred",

                           LastName = "Flintstone"

};

        public static User GetByUsername(string username)

            return

                GetAll().Where(s => s.Username == username).

                    FirstOrDefault();

        public static void Save(User user)

    public class User

        public string Username { get; set; }

        public string FirstName { get; set; }

        public string LastName { get; set; }

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