学习ASP.NET MVC 4之一（Pro ASP.NET MVC 4）

时间：2015-09-21 01:30:45 阅读：219 评论：0 收藏：0 [点我收藏+]

标签：

①

HomeController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace PartyInvites.Controllers {
    public class HomeController : Controller {
        
        public string Index() {
            return "Hello World";
        }
    }
}

View Code

按照原文的解释就是：“We have changed the action method called Index so that it returns the string ‘Hello, world‘.”

直接将字符串返回到页面，未通过任何模板页。

②

HomeController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
namespace PartyInvites.Controllers {
    public class HomeController : Controller {

        public ViewResult Index() {
            return View();
        }
    }
}

View Code

"Return a ViewResult object from an action method, we are instructing MVC to render a view. (The View method with no parameters)

Index.cshtml

@{
        Layout = null;
}

<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
</head>
<body>
    <div>
        Hello World (from the view)
    </div>
</body>
</html>

View Code

@{
        Layout = null;
}

This is an expression that will be interpreted by the Razor view engine.

It just tells Razor that we chose not to use a master page.

③

HomeController.cs

@{
Layout = null;
}

<!DOCTYPE html>

<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
</head>
<body>
    <div>
        @ViewBag.Greeting World (from the view)
    </div>
</body>
</html>

View Code

Index.cshtml

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace PartyInvites.Controllers {
    public class HomeController : Controller {

        public ViewResult Index() {

            int hour = DateTime.Now.Hour;
            ViewBag.Greeting = hour < 12 ? "Good Morning" : "Good Afternoon";
            return View();
        }
    }
}

View Code

This is about Adding Dynamic Output.

④

GuestResponse.cs　　Add a new Model Class

namespace PartyInvites.Models {
    public class GuestResponse {
        public string Name { get; set; }
        public string Email { get; set; }
        public string Phone { get; set; }
        public bool? WillAttend { get; set; }
    }
}

View Code

Index.cshtml

@{
        Layout = null;
}

<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Index</title>
</head>
<body>
    <div>
        @ViewBag.Greeting World (from the view)
        <p>We‘re going to have an exciting party.<br />
        (To do: sell it better. Add pictures or something.)
        </p>
        @Html.ActionLink("RSVP Now", "RsvpForm")
    </div>
</body>
</html>

View Code

HomeController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;

namespace PartyInvites.Controllers {
    public class HomeController : Controller {

        public ViewResult Index() {
            int hour = DateTime.Now.Hour;
            ViewBag.Greeting = hour < 12 ? "Good Morning" : "Good Afternoon";
            return View();
        }
        public ViewResult RsvpForm() {
            return View();
        }
    }
}

View Code

RsvpForm.cshtml

@model PartyInvites.Models.GuestResponse

@{
    Layout = null;
}

<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>RsvpForm</title>
</head>
<body>
    @using (Html.BeginForm()) {
        <p>Your name: @Html.TextBoxFor(x => x.Name) </p>
        <p>Your email: @Html.TextBoxFor(x => x.Email)</p>
        <p>Your phone: @Html.TextBoxFor(x => x.Phone)</p>
        <p>
            Will you attend?
            @Html.DropDownListFor(x => x.WillAttend, new[] {
                new SelectListItem() {Text = "Yes, I‘ll be there",
                    Value = bool.TrueString},
                new SelectListItem() {Text = "No, I can‘t come",
                    Value = bool.FalseString}
            }, "Choose an option")
        </p>
        <input type="submit" value="Submit RSVP" />
    }
</body>
</html>

View Code

⑤ Handling Forms ( GET OR POST)

HomeController.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using PartyInvites.Models;

namespace PartyInvites.Controllers {
    public class HomeController : Controller {

        public ViewResult Index() {
            int hour = DateTime.Now.Hour;
            ViewBag.Greeting = hour < 12 ? "Good Morning" : "Good Afternoon";
            return View();
        }

        [HttpGet]
        public ViewResult RsvpForm() {
            return View();
        }

        [HttpPost]
        public ViewResult RsvpForm(GuestResponse guestResponse) {
            // TODO: Email response to the party organizer
            return View("Thanks", guestResponse);
        }
    }
}

View Code

Thanks.cshtml

@model PartyInvites.Models.GuestResponse

@{
    Layout = null;
}

<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Thanks</title>
</head>
<body>
    <div>
        <h1>Thank you, @Model.Name!</h1>
        @if (Model.WillAttend == true) {
            @:It‘s great that you‘re coming. The drinks are already in the fridge!
        } else {
            @:Sorry to hear that you can‘t make it, but thanks for letting us know.
        }
    </div>
</body>
</html>

View Code

⑥ About Validation

GuestResponse.cs

using System.ComponentModel.DataAnnotations;

namespace PartyInvites.Models {

    public class GuestResponse {

        [Required(ErrorMessage = "Please enter your name")]
        public string Name { get; set; }

        [Required(ErrorMessage = "Please enter your email address")]
        [RegularExpression(".+\\@.+\\..+",
            ErrorMessage = "Please enter a valid email address")]
        public string Email { get; set; }

        [Required(ErrorMessage = "Please enter your phone number")]
        public string Phone { get; set; }

        [Required(ErrorMessage = "Please specify whether you‘ll attend")]
        public bool WillAttend { get; set; }
    }
}

View Code

HomeController.cs

...
[HttpPost]
public ViewResult RsvpForm(GuestResponse guestResponse) {
    if (ModelState.IsValid) {
        // TODO: Email response to the party organizer
        return View("Thanks", guestResponse);
    } else {
        // there is a validation error
        return View();
    }
}
...

View Code

~/Content/Site.css

.field-validation-error {color: #f00;}
.field-validation-valid { display: none;}
.input-validation-error { border: 1px solid #f00; background-color: #fee; }
.validation-summary-errors { font-weight: bold; color: #f00;}
.validation-summary-valid { display: none;}

View Code

RsvpForm.cshtml

@model PartyInvites.Models.GuestResponse

@{
    Layout = null;
}

<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <link rel="stylesheet" type="text/css" href="~/Content/Site.css" />
    <title>RsvpForm</title>
</head>
<body>
    @using (Html.BeginForm()) {
    @Html.ValidationSummary()
    <p>Your name: @Html.TextBoxFor(x => x.Name) </p>
    <p>Your email: @Html.TextBoxFor(x => x.Email)</p>
    <p>Your phone: @Html.TextBoxFor(x => x.Phone)</p>
    <p>
        Will you attend?
        @Html.DropDownListFor(x => x.WillAttend, new[] {
            new SelectListItem() {Text = "Yes, I‘ll be there",
                Value = bool.TrueString},
            new SelectListItem() {Text = "No, I can‘t come",
                Value = bool.FalseString}
            }, "Choose an option")
    </p>
    <input type="submit" value="Submit RSVP" />
}
</body>
</html>

View Code

⑦ About Sent Email Message

Thanks.cshtml

@model PartyInvites.Models.GuestResponse

@{
    Layout = null;
}

<!DOCTYPE html>
<html>
<head>
    <meta name="viewport" content="width=device-width" />
    <title>Thanks</title>
</head>
<body>
    @{
        try {
            WebMail.SmtpServer = "smtp.example.com";
            WebMail.SmtpPort = 587;
            WebMail.EnableSsl = true;
            WebMail.UserName = "mySmtpUsername";
            WebMail.Password = "mySmtpPassword";
            WebMail.From = "rsvps@example.com";
            WebMail.Send("party-host@example.com", "RSVP Notification",
                Model.Name + " is " + ((Model.WillAttend ?? false) ? "" : "not")
                + "attending");
        } catch (Exception) {
            @:<b>Sorry - we couldn‘t send the email to confirm your RSVP.</b>
        }
    }
    <div>
        <h1>Thank you, @Model.Name!</h1>
        @if (Model.WillAttend == true) {
            @:It‘s great that you‘re coming. The drinks are already in the fridge!
        } else {
            @:Sorry to hear that you can‘t make it, but thanks for letting us know.
        }
    </div>
</body>
</html>

View Code

注释待续...

学习ASP.NET MVC 4之一（Pro ASP.NET MVC 4）

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原文地址：http://www.cnblogs.com/zgyskc/p/4824891.html

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