MVC3Pro学习笔记

1.分页扩展方法

1.1定义

 1 public static MvcHtmlString PageLinks(this HtmlHelper html,
 2 PagingInfo pagingInfo,
 3 Func<int, string> pageUrl) {
 4 StringBuilder result = new StringBuilder();
 5 for (int i = 1; i <= pagingInfo.TotalPages; i++) {
 6 TagBuilder tag = new TagBuilder("a"); // Construct an <a> tag
 7 tag.MergeAttribute("href", pageUrl(i));
 8 tag.InnerHtml = i.ToString();
 9 if (i == pagingInfo.CurrentPage)
10 tag.AddCssClass("selected");
11 result.Append(tag.ToString());
12 }
13 return MvcHtmlString.Create(result.ToString());
14 }

 

public class PagingInfo {
public int TotalItems { get; set; }
public int ItemsPerPage { get; set; }
public int CurrentPage { get; set; }
public int TotalPages {
get { return (int)Math.Ceiling((decimal)TotalItems / ItemsPerPage); }
}
}

1.2使用配置以及调用

 1 <system.web.webPages.razor>
 2 <host factoryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc,
 3 Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" />
 4 <pages pageBaseType="System.Web.Mvc.WebViewPage">
 5 <namespaces>
 6 <add namespace="System.Web.Mvc" />
 7 <add namespace="System.Web.Mvc.Ajax" />
 8 <add namespace="System.Web.Mvc.Html" />
 9 <add namespace="System.Web.Routing" />
10 <add namespace="这里加入您的扩展类的类名，这样在cshtml页面就不用导入命名空间了"/>
11 </namespaces>

1 <div class="pager">
2 @Html.PageLinks(Model.PagingInfo, x => Url.Action("List", new {page = x}))
3 </div>

2.模型绑定到购物车229

public class CartModelBinder : IModelBinder {
private const string sessionKey = "Cart";
public object BindModel(ControllerContext controllerContext,
ModelBindingContext bindingContext) {
// get the Cart from the session
Cart cart = (Cart)controllerContext.HttpContext.Session[sessionKey];
// create the Cart if there wasn't one in the session data
if (cart == null) {
cart = new Cart();
controllerContext.HttpContext.Session[sessionKey] = cart;
}
// return the cart
return cart;
}
}

protected void Application_Start() {
AreaRegistration.RegisterAllAreas();
RegisterGlobalFilters(GlobalFilters.Filters);
RegisterRoutes(RouteTable.Routes);
ControllerBuilder.Current.SetControllerFactory(new NinjectControllerFactory());
ModelBinders.Binders.Add(typeof(Cart), new CartModelBinder());
}


public RedirectToRouteResult AddToCart(Cart cart, int productId, string returnUrl) {
Product product = repository.Products
.FirstOrDefault(p => p.ProductID == productId);
if (product != null) {
cart.AddItem(product, 1);
}
return RedirectToAction("Index", new { returnUrl });
}

定义可变长度的路由

1 public static void RegisterRoutes(RouteCollection routes) { routes.MapRoute("MyRoute", "{controller}/{action}/{id}/{*catchall}", 
2 
3 new { controller = "Home", action = "Index", id = UrlParameter.Optional }
4 );
5  }

public static void RegisterRoutes(RouteCollection routes) {

routes.MapRoute("MyRoute",

"{controller}/{action}/{id}/{*catchall}",

new { controller = "Home", action = "Index", id = UrlParameter.Optional },

new[] { "URLsAndRoutes.Controllers"}
);

}

让路由只使用我们定义的命名空间，不再搜索其他命名空间

public static void RegisterRoutes(RouteCollection routes) {

Route myRoute = routes.MapRoute("AddContollerRoute",
"Home/{action}/{id}/{*catchall}",

new { controller = "Home", action = "Index", id = UrlParameter.Optional },

new[] { "AdditionalControllers" }
);

myRoute.DataTokens["UseNamespaceFallback"] = false;

}

使用正则表达式控制路由

public static void RegisterRoutes(RouteCollection routes) {

routes.MapRoute(
"MyRoute", 
"{controller}/{action}/{id}/{*catchall}",

new { controller = "Home", action = "Index", id = UrlParameter.Optional },

new { controller = "^H.*", action = "^Index$|^About$"},

new[] { "URLsAndRoutes.Controllers"});

}

public static void RegisterRoutes(RouteCollection routes) {

routes.MapRoute(
"MyRoute", 
"{controller}/{action}/{id}/{*catchall}",

new { controller = "Home", action = "Index", id = UrlParameter.Optional },

new { controller = "^H.*", action = "Index|About",

httpMethod = new HttpMethodConstraint("GET", "POST") },

new[] { "URLsAndRoutes.Controllers" }
);

}

自定义路由限制，使用IRouteConstraint

namespace URLsAndRoutes.Infrastructure {
public class UserAgentConstraint : IRouteConstraint
 {
private string requiredUserAgent; 
public UserAgentConstraint(string agentParam)
 {
 requiredUserAgent = agentParam; 
} 
public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
 { 
return httpContext.Request.UserAgent != null 
&& httpContext.Request.UserAgent.Contains(requiredUserAgent); 
}
 } 
}

public static void RegisterRoutes(RouteCollection routes) 
{

routes.MapRoute(
"MyRoute", 
"{controller}/{action}/{id}/{*catchall}",

new { controller = "Home", action = "Index", id = UrlParameter.Optional },

new {

controller = "^H.*", action = "Index|About",

httpMethod = new HttpMethodConstraint("GET", "POST"),

customConstraint = new UserAgentConstraint("IE")

},

new[] { "URLsAndRoutes.Controllers" }
);

}

允许路由到静态html文件

public static void RegisterRoutes(RouteCollection routes) {

routes.RouteExistingFiles = true;

routes.MapRoute(
"MyRoute", 
"{controller}/{action}/{id}/{*catchall}",

new { controller = "Home", action = "Index", id = UrlParameter.Optional },

new {

controller = "^H.*", action = "Index|About",

httpMethod = new HttpMethodConstraint("GET", "POST"),

customConstraint = new UserAgentConstraint("IE")

},

new[] { "URLsAndRoutes.Controllers" }
);
}

public static void RegisterRoutes(RouteCollection routes)
 {

routes.RouteExistingFiles = true;

routes.MapRoute(
"DiskFile",
"Content/StaticContent.html",

new {
controller = "Account", action = "LogOn",
},

new {
customConstraint = new UserAgentConstraint("IE")
}
);

routes.IgnoreRoute("Content/{filename}.html");

routes.MapRoute("", "{controller}/{action}");

routes.MapRoute("MyRoute", 
"{controller}/{action}/{id}/{*catchall}",

new { controller = "Home", action = "Index", id = UrlParameter.Optional },

new {

controller = "^H.*", action = "Index|About",

httpMethod = new HttpMethodConstraint("GET", "POST"),

customConstraint = new UserAgentConstraint("IE")

},

new[] { "URLsAndRoutes.Controllers" }
);

}

 

 

 

 

 

 

 

 

 

 

转载于:https://www.cnblogs.com/mayamoon/archive/2012/03/03/2378188.html