如何下载 Razor View 引擎

Question

我想下载并安装 ASP.Net MVC 2 的 razor 视图引擎。我可以从哪里下载和安装？

Answer 1

获得 MVC Razor 引擎并学习如何使用它的最佳途径是向 Scot Gu！整个 Razor 项目的大师。他的博文http://weblogs.asp.net/scottgu/archive/2010/10/22/asp-net-mvc-3-layouts.aspx 非常容易上手，教你如何从 VS 中的 Package Manager Consel 管理脚手架过程。

Answer 2

利用 Codeplex 的 Matthew Abbott 和 My Razor 视图引擎。您可以执行以下操作。它不支持模型或布局页面，但如果您选择走这条路线，它会让您朝着正确的方向前进。不过坦率地说，我会在时机成熟时更新到 MVC 3。此代码基于我在http://buildstarted.com/2010/11/22/making-your-own-viewengine-with-markdown/ 的博客文章

您必须将以下行添加到 global.asax：

ViewEngines.Engines.Clear();
ViewEngines.Engines.Add(new RazorViewEngine.RazorViewEngine());

除非您想要两个引擎，在这种情况下只需删除 Clear()

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Hosting;
using System.IO;
using System.Text.RegularExpressions;
using System.Xml.Linq;

namespace RazorViewEngine {
    /// <summary>
    /// ViewEngine for the RazorView. Provides basic file handling to load views. 
    /// </summary>
    public class RazorViewEngine : IViewEngine {

        string[] SearchLocations { get; set; }
        Tuple<string, string, RazorView> Cache { get; set; }
        VirtualPathProvider VirtualPathProvider { get; set; }

        public RazorViewEngine() {
            //{1} == Controller name
            //{0} == View name
            SearchLocations = new string[] {
                "~/Views/{1}/{0}.cshtml",
                "~/Views/Shared/{0}.cshtml",
            };

            VirtualPathProvider = HostingEnvironment.VirtualPathProvider;
        }

        #region IViewEngine Members

        public ViewEngineResult FindPartialView(ControllerContext controllerContext, string partialViewName, bool useCache) {
            return CreateView(controllerContext, partialViewName, null, null, useCache);
        }

        public ViewEngineResult FindView(ControllerContext controllerContext, string viewName, string masterName, bool useCache) {
            return CreateView(controllerContext, viewName, masterName, GetLayoutPath(controllerContext), useCache);
        }

        /// <summary>
        /// Meat of the FindView methods.
        /// </summary>
        /// <param name="controllerContext">The current controller context for this request.</param>
        /// <param name="viewName">The requested view name. </param>
        /// <param name="masterName">The master page view name (currently unused)</param>
        /// <param name="layoutPath">The layout path location (Replaces the masterpage in other view engines)</param>
        /// <param name="useCache">Cache the viewpage?</param>
        /// <remarks>The layout path is currently hardcoded to "Layout" and will look in the SearchLocations for that path</remarks>
        /// <returns>Returns a ViewEngineResult with the requested view</returns>
        public ViewEngineResult CreateView(ControllerContext controllerContext, string viewName, string masterName, string layoutPath, bool useCache) {
            //grab the current controller from the route data
            string controllerName = controllerContext.RouteData.GetRequiredString("controller");

            //for proper error handling we need to return a list of locations we attempted to search for the view
            string[] SearchedLocations;

            //get the actual path of the view - returns null if none is found
            string viewPath = GetViewPath(viewName, controllerName, out SearchedLocations);

            if (viewPath != null) {
                RazorView view = new RazorView(this, controllerContext, viewPath, layoutPath);
                return new ViewEngineResult(view, this);
            }

            //we couldn't find the view - return an array of all locations we've looked in
            return new ViewEngineResult(SearchedLocations);
        }

        /// <summary>
        /// Look for the view in the current file system
        /// </summary>
        /// <param name="viewName">The name of the View you're looking for</param>
        /// <param name="controllerName">Current controller name</param>
        /// <param name="SearchedLocations">out a list of locations searched</param>
        /// <returns>A string value of the relative path</returns>
        public string GetViewPath(string viewName, string controllerName, out string[] SearchedLocations) {
            return FindPath(viewName, controllerName, out SearchedLocations);
        }

        /// <summary>
        /// Look for the view in the current file system
        /// </summary>
        /// <param name="viewName">The name of the View you're looking for</param>
        /// <param name="controllerName">Current controller name</param>
        /// <param name="SearchedLocations">out a list of locations searched</param>
        /// <returns>A string value of the relative path</returns>
        public string FindPath(string viewName, string controllerName, out string[] SearchedLocations) {
            SearchedLocations = new string[SearchLocations.Length];

            for (int i = 0; i < SearchLocations.Length; i++) {
                string virtualPath = string.Format(SearchLocations[i], viewName, controllerName);

                SearchedLocations[i] = virtualPath;

                //check the active VirtualPathProvider if the file exists
                if (VirtualPathProvider.FileExists(virtualPath)) {
                    //add it to cache - not currently implemented
                    return VirtualPathProvider.GetFile(virtualPath).VirtualPath;
                }
            }

            return null;
        }

        /// <summary>
        /// Get the layout virtual path
        /// </summary>
        /// <param name="controllerContext">The current Controller context for this request</param>
        /// <returns>A string virtual path</returns>
        public string GetLayoutPath(ControllerContext controllerContext) {
            //This should probably be added to a list of locations - I'm not sure exactly
            //what I need to do with this yet.
            string[] locations;

            return FindPath("Layout", controllerContext.RouteData.GetRequiredString("controller"), out locations);
        }

        /// <summary>
        /// Current irrelevant
        /// </summary>
        /// <param name="controllerContext">The active controller context</param>
        /// <param name="view">View to release</param>
        public void ReleaseView(ControllerContext controllerContext, IView view) {
            IDisposable disposable = view as IDisposable;
            if (disposable != null) {
                disposable.Dispose();
            }
        }

        #endregion
    }

    /// <summary>
    /// Implements IView and renders a Razor
    /// </summary>
    public class RazorView : IView {

        ControllerContext ControllerContext;
        string ViewPath;
        string LayoutPath;
        RazorViewEngine Engine;

        public RazorView(RazorViewEngine engine, ControllerContext controllerContext, string viewPath, string layoutPath) {
            //load the file
            this.ControllerContext = controllerContext;
            this.ViewPath = viewPath;
            this.LayoutPath = layoutPath;
            this.Engine = engine;
        }

        #region IView Members

        /// <summary>
        /// Converts Razor to html and writes it to the passed in writer
        /// </summary>
        /// <param name="viewContext"></param>
        /// <param name="writer"></param>
        public void Render(ViewContext viewContext, System.IO.TextWriter writer) {
            //View contents
            string contents = new StreamReader(VirtualPathProvider.OpenFile(ViewPath)).ReadToEnd();
            string layoutContents = LayoutPath == null
                ? null
                : new StreamReader(VirtualPathProvider.OpenFile(LayoutPath)).ReadToEnd();

            contents = Parse(contents);

            string output;
            output = contents;

            writer.Write(output);
        }

        /// <summary>
        /// Converts Razor to html
        /// </summary>
        /// <param name="Razor">Razor text</param>
        /// <returns>Html formatted Razor text</returns>
        string Parse(string Razor) {

            //Where do I get the model From

            return RazorEngine.Razor.Parse(Razor);
        }

        #endregion
    }

}

Answer 3

可能有点过时，但您或许应该看看这篇文章。

http://stefan.rusek.org/Posts/Using-Razor-with-ASP-NET-MVC-in-Four-Easy-Steps/26/

Razor 能够独立运行，因此完全可以自己提供接线。无论您是否需要使用 .NET4，我都不能 100% 确定。另一方面，MVC3 处于 RC 状态，并且有一个 Go-Live 许可证，从技术上讲，您现在可以开始使用它，并且当 RTM 命中（很快）时只需升级。

Answer 4

Razor is for MVC 3