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";
}
}
}
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();
}
}
}
"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>
@{
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>
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();
}
}
}
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; }
}
}
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>
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();
}
}
}
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>
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);
}
}
}
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>
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; }
}
}
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();
}
}
...
~/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;}
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>
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 = "[email protected]";
WebMail.Send("[email protected]", "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>
注释待续...
时间： 2024-08-07 04:42:19