ASP.NET MVC 4 (五) 视图

public interface IViewEngine { 
　　ViewEngineResult FindPartialView(ControllerContext controllerContext, string partialViewName, bool useCache); 
　　ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache); 
　　void ReleaseView(ControllerContext controllerContext, IView view); 
} 

public interface IView { 
　　void Render(ViewContext viewContext, TextWriter writer); 
} 

public class ViewEngineResult { 
　　public ViewEngineResult(IEnumerablestring> searchedLocations) { 
　　　　if (searchedLocations == null) { 
　　　　　　throw new ArgumentNullException("searchedLocations"); 
　　　　} 
　　　　SearchedLocations = searchedLocations; 
　　} 
　　public ViewEngineResult(IView view, IViewEngine viewEngine) { 
　　　　if (view == null) { throw new ArgumentNullException("view");} 
　　　　if (viewEngine == null) { throw new ArgumentNullException("viewEngine");} 
　　　　View = view; 
　　　　ViewEngine = viewEngine; 
　　} 
　　public IEnumerablestring> SearchedLocations { get; private set; } 
　　public IView View { get; private set; } 
　　public IViewEngine ViewEngine { get; private set; } 
} 

public class DebugDataView : IView {

        public void Render(ViewContext viewContext, TextWriter writer) {
            Write(writer, "---Routing Data---");
            foreach (string key in viewContext.RouteData.Values.Keys) {
                Write(writer, "Key: {0}, Value: {1}",
                    key, viewContext.RouteData.Values[key]);
            }

            Write(writer, "---View Data---");
            foreach (string key in viewContext.ViewData.Keys) {
                Write(writer, "Key: {0}, Value: {1}", key,
                    viewContext.ViewData[key]);
            }
        }

        private void Write(TextWriter writer, string template, params object[] values) {
            writer.Write(string.Format(template, values) + "
");
        }
    }

public class DebugDataViewEngine : IViewEngine {

        public ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache) {

            if (viewName == "DebugData") {
                return new ViewEngineResult(new DebugDataView(), this);
            } else {
                return new ViewEngineResult(new string[] 
                    { "No view (Debug Data View Engine)" });
            }
        }

        public ViewEngineResult FindPartialView(ControllerContext controllerContext,string partialViewName, bool useCache) {

            return new ViewEngineResult(new string[] 
                { "No view (Debug Data View Engine)" });
        }

        public void ReleaseView(ControllerContext controllerContext, IView view) {
            // do nothing
        }
    }

ViewEngines.Engines.Add(new DebugDataViewEngine()); 

ViewEngines.Engines.Insert(0, new DebugDataViewEngine());

return View("DebugData");

@model string[] 
@{ 
Layout = null; 
ViewBag.Title = "Index"; 
} 
This is a list of fruit names: 
@foreach (string name in Model) { 
span>b>@nameb>span> 
} 

namespace ASP { 
using System; 
using System.Collections.Generic; 
using System.IO; 
using System.Linq; 
using System.Net; 
using System.Web; 
using System.Web.Helpers; 
using System.Web.Security; 
using System.Web.UI; 
using System.Web.WebPages; 
using System.Web.Mvc; 
using System.Web.Mvc.Ajax; 
using System.Web.Mvc.Html; 
using System.Web.Optimization; 
using System.Web.Routing; 
　　public class _Page_Views_Home_Index_cshtml : System.Web.Mvc.WebViewPagestring[]> { 
　　　　public _Page_Views_Home_Index_cshtml() { 
　　　　} 

　　　　public override void Execute() { 
　　　　　　ViewBag.Title = "Index"; 
　　　　　　WriteLiteral("\r\n\r\nThis is a list of fruit names:\r\n\r\n"); 
　　　　　　foreach (string name in Model) { 
　　　　　　　　WriteLiteral(" "); 
　　　　　　　　Write(name); 
　　　　　　　　WriteLiteral("\r\n"); 
　　　　　　} 
　　　　} 
　　} 
} 

?  ~/Views/Home/Index.cshtml
?  ~/Views/Home/Index.vbhtml
?  ~/Views/Shared/Index.cshtml
?  ~/Views/Shared/Index.vbhtml

@model Razor.Models.Product 
@{ 
Layout = null; 
} 
DOCTYPE html> 
html> 
head> 
meta name="viewport" content="width=device-width" /> 
title>Indextitle> 
head> 
body> 
div> 
@Model.Name 
div> 
body> 
html> 

DOCTYPE html> 
html> 
head> 
meta name="viewport" content="width=device-width" /> 
title>@ViewBag.Titletitle> 
head> 
body> 
h1>Product Informationh1> 
div style="padding: 20px; border: solid medium black; font-size: 20pt"> 
@RenderBody() 
div> 
h2>Visit a href="http://apress.com">Apressa>h2> 
body> 
html> 

@model Razor.Models.Product 
@{ 
ViewBag.Title = "Product Name"; 
Layout = "~/Views/_BasicLayout.cshtml"; 
} 
Product Name: @Model.Name 

@{ 
Layout = "~/Views/_BasicLayout.cshtml"; 
} 

@model Razor.Models.Product 
@{ 
ViewBag.Title = "DemoExpression"; 
} 
table> 
thead> 
tr>th>Propertyth>th>Valueth>tr> 
thead> 
tbody> 
tr>td>Nametd>td>@Model.Nametd>tr> 
tr>td>Pricetd>td>@Model.Pricetd>tr> 
tr>td>Stock Leveltd>td>@ViewBag.ProductCounttd>tr> 
tbody> 
table> 

div data-discount="@ViewBag.ApplyDiscount" data-express="@ViewBag.ExpressShip" data-supplier="@ViewBag.Supplier"> 
The containing element has data attributes 
div> 
Discount:input type="checkbox" checked="@ViewBag.ApplyDiscount" /> 
Express:input type="checkbox" checked="@ViewBag.ExpressShip" /> 
Supplier:input type="checkbox" checked="@ViewBag.Supplier" /> 

td> 
@switch ((int)ViewBag.ProductCount) { 
case 0: 
　　@: Out of Stock 
　　break; 
case 1: 
　　b>Low Stock (@ViewBag.ProductCount)b> 
　　break; 
default: 
　　@ViewBag.ProductCount 
　　break; 
} 
td> 

td> 
@if (ViewBag.ProductCount == 0) { 
@:Out of Stock 
} else if (ViewBag.ProductCount == 1) { 
b>Low Stock (@ViewBag.ProductCount)b> 
} else { 
@ViewBag.ProductCount 
} 
td> 

@model Razor.Models.Product[] 
@{ 
ViewBag.Title = "DemoArray"; 
Layout = "~/Views/_BasicLayout.cshtml"; 
} 
@if (Model.Length > 0) { 
table> 
thead>tr>th>Productth>th>Priceth>tr>thead> 
tbody> 
@foreach (Razor.Models.Product p in Model) { 
tr> 
td>@p.Nametd> 
td>$@p.Pricetd> 
tr> 
} 
tbody> 
table> 
} else { 
h2>No product datah2> 
} 

@using Razor.Models 
@model Product[]
@{ 
ViewBag.Title = "DemoArray"; 
Layout = "~/Views/_BasicLayout.cshtml"; 
} 
@if (Model.Length > 0) { 
table> 
thead>tr>th>Productth>th>Priceth>tr>thead> 
tbody> 
@foreach (Productp in Model) { 
tr> 
td>@p.Nametd> 
td>$@p.Pricetd> 
tr> 
} 
tbody> 
table> 
} else { 
h2>No product datah2> 
} 

@model string[]

@{
    ViewBag.Title = "Index";
}

@section Header {
    div class="view">
        @foreach (string str in new [] {"Home", "List", "Edit"}) {
            @Html.ActionLink(str, str, null, new { style = "margin: 5px" })  
        }
    div>
}

@section Body {
    div class="view">
        This is a list of fruit names:

        @foreach (string name in Model) {
            span>b>@nameb>span>
        }
    div>
}

@section Footer {
    div class="view">
        This is the footer
    div>
}

DOCTYPE html>
html>
head>
    meta charset="utf-8" />
    meta name="viewport" content="width=device-width" />
    style type="text/css">
        div.layout { background-color: lightgray;}
        div.view { border: thin solid black; margin: 10px 0;}
    style>
    title>@ViewBag.Titletitle>
head>
body>
    @RenderSection("Header")

    div class="layout">
        This is part of the layout
    div>

    @RenderSection("Body")

    div class="layout">
        This is part of the layout
    div>

    @if (IsSectionDefined("Footer")) {
        @RenderSection("Footer")
    } else {
        h4>This is the default footerh4>   
    }

    @RenderSection("scripts", false)
    
    div class="layout">
        This is part of the layout
    div>
body>
html>

div> 
This is the message from the partial view. 
@Html.ActionLink("This is a link to the Index action", "Index") 
div> 

@{ 
ViewBag.Title = "List"; 
Layout = null; 
} 
h3>This is the /Views/Common/List.cshtml Viewh3> 
@Html.Partial("MyPartial") 

@model IEnumerablestring> 
div> 
This is the message from the partial view. 
ul> 
@foreach (string str in Model) { 
li>@strli> 
} 
ul> 
div> 

@{ 
ViewBag.Title = "List"; 
Layout = null; 
} 
h3>This is the /Views/Common/List.cshtml Viewh3> 
@Html.Partial("MyStronglyTypedPartial", new [] {"Apple", "Orange", "Pear"}) 

public class HomeController : Controller { 
...
[ChildActionOnly] 
public ActionResult Time() { 
return PartialView(DateTime.Now); 
} 
} 

@model DateTime 
p>The time is: @Model.ToShortTimeString()p> 

@{ 
ViewBag.Title = "List"; 
Layout = null; 
} 
h3>This is the /Views/Common/List.cshtml Viewh3> 
@Html.Partial("MyStronglyTypedPartial", new [] {"Apple", "Orange", "Pear"}) 
@Html.Action("Time") 

... 
@Html.Action("Time", "MyController") 
... 

... 
@Html.Action("Time", new { time = DateTime.Now }) 
...