asp.net mvc怎么按时间段查询 下面这段代码是查询代码 如何在C层和V层实现
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篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了asp.net mvc怎么按时间段查询 下面这段代码是查询代码 如何在C层和V层实现相关的知识，希望对你有一定的参考价值。
/// 动态搜索类new
/// ?int UserID=0 用户ID
/// ?DateTime BeginDate=DateTime.Now 开始时间
/// ?DateTime EndDate=DateTime.Now 结束时间
/// ?int AccountID=0 账号类型
/// ?string OrderFeild="Order Desc" 排序字段和方式
///
/// </param>
/// <param name="iPageIndex">页码</param>
/// <param name="iPageSize">每页显示条数</param>
/// <returns></returns>
public PagedList<Finance_WithdrawalDetail> GetWithdrawalDetail(dynamic dySearch, int iPageIndex, int iPageSize)
try
var queryBuilder = QueryBuilder.Create<Finance_WithdrawalDetail>();
ExpandoObject doSearch = dySearch;
var Keys = ((IDictionary<String, Object>)doSearch).Keys;
if (Keys.Contains("UserID")) //用户ID
queryBuilder.Equals(n => n.UserID, (int)dySearch.UserID);
if (Keys.Contains("BeginDate")) //开始时间
queryBuilder.Between(n => n.AddTime, (DateTime)dySearch.BeginDate, DateTime.MaxValue);
if (Keys.Contains("EndDate")) //结束时间
queryBuilder.Between(n => n.AddTime, DateTime.MinValue, (DateTime)dySearch.EndDate);
string strOrder = string.Empty;
if (Keys.Contains("OrderFeild") && !string.IsNullOrEmpty(dySearch.OrderFeild)) //排序字段和方式
strOrder = dySearch.OrderFeild;
else
strOrder = "ID Desc";
var list = db.Finance_WithdrawalDetail.Where(queryBuilder.Expression).myorder(strOrder);
return new PagedList<Finance_WithdrawalDetail>(list, iPageIndex, iPageSize);
catch (Exception ex)
return null;
viewdata["data"]= PagedList<Finance_WithdrawalDetail> GetWithdrawalDetail(....);
return view();
v层
@｛var data = viewdata["data"] as PagedList<Finance_WithdrawalDetail>；
<table>
@ foreach（var d in data)
........<td>@d.......</td>
</table>
｝追问
在V层不是直接显示出来的 是要求输入时间段 点击查询按钮查询
追答1、做一个 form ，加入时间选择框 提交到c c 层里面接受到参数后 根据参数去过滤记录
然后输出的记录就是过滤的了
2、全部json ajax把记录请求到前台，数据不多的情况下，点击查询的时候 只在客户端过滤 ，利用js操作 也行
3、建议用ext 等js 框架来实现gird的展示 ，他的例子中也有一些教程来展示如何请求数据，也有过滤方面的东西
4、asp.net mvc 我最为推荐的 是你使用 telerik ，可以搜索下 ，看下这个开源的扩展框架，可能使你的开发起来更容易 ，可以看下他的例子和源码，分页 查询什么的都是小问题了，目前asp.net mvc这块可能只有它这块支持好点
在视图时循环输出信息 参考技术B 好高深，我晕菜了
Asp.Net MVC的路由
通过前面几篇博文的介绍，现在我们已经清楚了asp.net请求管道是怎么一回事了，这篇博文来聊聊MVC的路由。
其实MVC的请求管道和Asp.Net请求管道一样，只是MVC扩展了UrlRoutingModule的动作。我们知道MVC网站启动后第一个请求会执行Global.asax文件中的Application_Start方法，完成一些初始化工作，其中就会注册路由，先来看下面一张图，该图可以直观的展示了MVC执行的流程。
结合上图，我们一起来看看代码是如何实现路由的注册的。
protected void Application_Start() AreaRegistration.RegisterAllAreas(); RouteConfig.RegisterRoutes(RouteTable.Routes); public class RouteConfig public static void RegisterRoutes(RouteCollection routes) routes.IgnoreRoute("resource.axd/*pathInfo"); routes.MapRoute( name: "Default", url: "controller/action/id", defaults: new controller = "Home", action = "Index", id = UrlParameter.Optional );
RouteCollection通过MapRoute扩展方法拿着Url来创建Route并注册到RouteCollection其中，这一点我们通过源码可以看到该方法是如何操作的，该方法通过new一个MvcRouteHandler来创建Route。MvcRouteHandler创建了MvcHandler。紧接着继续往下执行，创建HttpApplication实例，执行后续事件，在PostResolveRequestCache事件去注册UrlRouteModule的动作。
// System.Web.Mvc.RouteCollectionExtensions /// <summary>Maps the specified URL route and sets default route values, constraints, and namespaces.</summary> /// <returns>A reference to the mapped route.</returns> /// <param name="routes">A collection of routes for the application.</param> /// <param name="name">The name of the route to map.</param> /// <param name="url">The URL pattern for the route.</param> /// <param name="defaults">An object that contains default route values.</param> /// <param name="constraints">A set of expressions that specify values for the <paramref name="url" /> parameter.</param> /// <param name="namespaces">A set of namespaces for the application.</param> /// <exception cref="T:System.ArgumentNullException">The <paramref name="routes" /> or <paramref name="url" /> parameter is null.</exception> public static Route MapRoute(this RouteCollection routes, string name, string url, object defaults, object constraints, string[] namespaces) if (routes == null) throw new ArgumentNullException("routes"); if (url == null) throw new ArgumentNullException("url"); Route route = new Route(url, new MvcRouteHandler()) Defaults = RouteCollectionExtensions.CreateRouteValueDictionaryUncached(defaults), Constraints = RouteCollectionExtensions.CreateRouteValueDictionaryUncached(constraints), DataTokens = new RouteValueDictionary() ; ConstraintValidation.Validate(route); if (namespaces != null && namespaces.Length > 0) route.DataTokens["Namespaces"] = namespaces; routes.Add(name, route); return route;
using System; using System.Web.Mvc.Properties; using System.Web.Routing; using System.Web.SessionState; namespace System.Web.Mvc /// <summary>Creates an object that implements the IHttpHandler interface and passes the request context to it.</summary> public class MvcRouteHandler : IRouteHandler private IControllerFactory _controllerFactory; /// <summary>Initializes a new instance of the <see cref="T:System.Web.Mvc.MvcRouteHandler" /> class.</summary> public MvcRouteHandler() /// <summary>Initializes a new instance of the <see cref="T:System.Web.Mvc.MvcRouteHandler" /> class using the specified factory controller object.</summary> /// <param name="controllerFactory">The controller factory.</param> public MvcRouteHandler(IControllerFactory controllerFactory) this._controllerFactory = controllerFactory; /// <summary>Returns the HTTP handler by using the specified HTTP context.</summary> /// <returns>The HTTP handler.</returns> /// <param name="requestContext">The request context.</param> protected virtual IHttpHandler GetHttpHandler(RequestContext requestContext) requestContext.HttpContext.SetSessionStateBehavior(this.GetSessionStateBehavior(requestContext)); return new MvcHandler(requestContext); /// <summary>Returns the session behavior.</summary> /// <returns>The session behavior.</returns> /// <param name="requestContext">The request context.</param> protected virtual SessionStateBehavior GetSessionStateBehavior(RequestContext requestContext) string text = (string)requestContext.RouteData.Values["controller"]; if (string.IsNullOrWhiteSpace(text)) throw new InvalidOperationException(MvcResources.MvcRouteHandler_RouteValuesHasNoController); IControllerFactory controllerFactory = this._controllerFactory ?? ControllerBuilder.Current.GetControllerFactory(); return controllerFactory.GetControllerSessionBehavior(requestContext, text); IHttpHandler IRouteHandler.GetHttpHandler(RequestContext requestContext) return this.GetHttpHandler(requestContext);
using System; using System.Globalization; using System.Runtime.CompilerServices; using System.Web.Security; namespace System.Web.Routing /// <summary>Matches a URL request to a defined route.</summary> [TypeForwardedFrom("System.Web.Routing, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")] public class UrlRoutingModule : IHttpModule private static readonly object _contextKey = new object(); private static readonly object _requestDataKey = new object(); private RouteCollection _routeCollection; /// <summary>Gets or sets the collection of defined routes for the ASP.NET application.</summary> /// <returns>An object that contains the routes.</returns> public RouteCollection RouteCollection get if (this._routeCollection == null) this._routeCollection = RouteTable.Routes; return this._routeCollection; set this._routeCollection = value; /// <summary>Disposes of the resources (other than memory) that are used by the module.</summary> protected virtual void Dispose() /// <summary>Initializes a module and prepares it to handle requests.</summary> /// <param name="application">An object that provides access to the methods, properties, and events common to all application objects in an ASP.NET application.</param> protected virtual void Init(HttpApplication application) if (application.Context.Items[UrlRoutingModule._contextKey] != null) return; application.Context.Items[UrlRoutingModule._contextKey] = UrlRoutingModule._contextKey; application.PostResolveRequestCache += new EventHandler(this.OnApplicationPostResolveRequestCache); private void OnApplicationPostResolveRequestCache(object sender, EventArgs e) HttpApplication httpApplication = (HttpApplication)sender; HttpContextBase context = new HttpContextWrapper(httpApplication.Context); this.PostResolveRequestCache(context); /// <summary>Assigns the HTTP handler for the current request to the context.</summary> /// <param name="context">Encapsulates all HTTP-specific information about an individual HTTP request.</param> /// <exception cref="T:System.InvalidOperationException">The <see cref="P:System.Web.Routing.RouteData.RouteHandler" /> property for the route is null.</exception> [Obsolete("This method is obsolete. Override the Init method to use the PostMapRequestHandler event.")] public virtual void PostMapRequestHandler(HttpContextBase context) /// <summary>Matches the HTTP request to a route, retrieves the handler for that route, and sets the handler as the HTTP handler for the current request.</summary> /// <param name="context">Encapsulates all HTTP-specific information about an individual HTTP request.</param> public virtual void PostResolveRequestCache(HttpContextBase context) RouteData routeData = this.RouteCollection.GetRouteData(context); if (routeData == null) return; IRouteHandler routeHandler = routeData.RouteHandler; if (routeHandler == null) throw new InvalidOperationException(string.Format(CultureInfo.CurrentCulture, SR.GetString("UrlRoutingModule_NoRouteHandler"), new object[0])); if (routeHandler is StopRoutingHandler) return; RequestContext requestContext = new RequestContext(context, routeData); context.Request.RequestContext = requestContext; IHttpHandler httpHandler = routeHandler.GetHttpHandler(requestContext); if (httpHandler == null) throw new InvalidOperationException(string.Format(CultureInfo.CurrentUICulture, SR.GetString("UrlRoutingModule_NoHttpHandler"), new object[] routeHandler.GetType() )); if (!(httpHandler is UrlAuthFailureHandler)) context.RemapHandler(httpHandler); return; if (FormsAuthenticationModule.FormsAuthRequired) UrlAuthorizationModule.ReportUrlAuthorizationFailure(HttpContext.Current, this); return; throw new HttpException(401, SR.GetString("Assess_Denied_Description3")); void IHttpModule.Dispose() this.Dispose(); void IHttpModule.Init(HttpApplication application) this.Init(application);
到此，路由的注册动作也就告一段落。那么在理解了MVC的路由后，可以做什么呢？我们可以对路由做一些我们自己的扩展。
可以从三个层面来扩展路由：
一、在MapRoute范围内进行扩展，这种扩展只是在扩展正则表达式
public static void RegisterRoutes(RouteCollection routes) routes.IgnoreRoute("resource.axd/*pathInfo");//忽略路由 //mvc路由规则下的扩展 routes.IgnoreRoute("Handler/*pathInfo"); routes.MapRoute( name: "About", url: "about",//不区分大小写 defaults: new controller = "First", action = "String", id = UrlParameter.Optional );//静态路由 routes.MapRoute("TestStatic", "Test/action", new controller = "Second" );//替换控制器 routes.MapRoute( "Regex", "controller/action_Year_Month_Day", new controller = "First", id = UrlParameter.Optional , new Year = @"^\\d4", Month = @"\\d2", Day = @"\\d2" );//正则路由 routes.MapRoute( name: "Default", url: "controller/action/id", defaults: new controller = "Home", action = "Index", id = UrlParameter.Optional , namespaces: new string[] "Jesen.Web.Controllers" );
二、通过继承RouteBase来扩展Route，这种扩展可以随意的定制规则，而不仅仅是表达式
/// <summary> /// 直接扩展route /// </summary> public class MyRoute : RouteBase /// <summary> /// 解析路由信息 /// </summary> /// <param name="httpContext"></param> /// <returns></returns> public override RouteData GetRouteData(HttpContextBase httpContext)
//此处可以根据自己的需求做一些路由的配置，例如拒绝某个浏览器的访问，检测到Chrome浏览器，则直接跳转到某个url if (httpContext.Request.UserAgent.IndexOf("Chrome/69.0.3497.92") >= 0) RouteData rd = new RouteData(this, new MvcRouteHandler()); rd.Values.Add("controller", "Pipe"); rd.Values.Add("action", "Refuse"); return rd; return null; /// <summary> /// 指定处理的虚拟路径 /// </summary> /// <param name="requestContext"></param> /// <param name="values"></param> /// <returns></returns> public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values) return null;
接着在RouteConfig和Global.asax中注册该路由
public static void RegisterMyRoutes(RouteCollection routes)
routes.Add(new MyRoute());
protected void Application_Start()
RouteConfig.RegisterMyRoutes(RouteTable.Routes);
三、扩展Handler，不一定是MvcHandler，可以是我们熟悉的IHttpHandler
/// <summary> /// 扩展IRouteHandler /// </summary> public class MyRouteHandler : IRouteHandler public IHttpHandler GetHttpHandler(RequestContext requestContext) return new MyHttpHandler(requestContext); /// <summary> /// 扩展IHttpHandler /// </summary> public class MyHttpHandler : IHttpHandler public MyHttpHandler(RequestContext requestContext) public void ProcessRequest(HttpContext context) string url = context.Request.Url.AbsoluteUri; context.Response.Write((string.Format("当前地址为：0", url))); context.Response.End(); public virtual bool IsReusable get return false;
RouteConfig.cs文件中配置路由
public static void RegisterMyMVCHandler(RouteCollection routes) routes.Add(new Route("MyMVC/*Info", new MyRouteHandler()));
Global中注册路由
RouteConfig.RegisterMyMVCHandler(RouteTable.Routes);
运行看结果
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