做网站后台管理系统的时候，有时我们需要根据用户的录入配置动态生成一些频道，这些频道需要用到独立的Controller，这时就需要用到运行时动态编译了。代码如下：
using System.Web.Mvc;using System.CodeDom.Compiler;using System.Text;using Microsoft.CSharp;namespace DynamicCompiler.Controllers{ ???public class HomeController : Controller ???{ ???????// GET: Home ???????public ContentResult Index() ???????{ ???????????return Content(@" ???????????????????????????这个页面是vs生成的<br> ????????????????????????????<a href=‘/home/creat‘>点击动态编译生成TestController</a><br> ???????????????????????????<a href=‘/Test/‘>访问TestController</a><br> ???????????????????????????<a href=‘/Test/WithView‘>测试带View的Action</a> ???????????????????????"); ???????} ???????public ContentResult Creat() ???????{ ???????????string cspath = Server.MapPath("~/TestController.cs"); ???????????var compiler = CompilerFromCsPath("TestController", cspath); //编译 ???????????#region 输出编译信息 ???????????StringBuilder sb = new StringBuilder(); ???????????sb.Append("cs文件路径：" + cspath); ???????????sb.Append("编译信息：" + "<br>"); ???????????foreach (string output in compiler.Output) ???????????{ ???????????????sb.Append(output + "<br>"); ???????????} ???????????sb.Append("错误信息：" + "<br>"); ???????????foreach (CompilerError error in compiler.Errors) ???????????{ ???????????????sb.Append(error.ErrorText + "<br>"); ???????????} ???????????#endregion ???????????return Content(sb.ToString()); ???????} ???????/// <summary> ???????/// 动态编译并执行代码 ???????/// </summary> ???????/// <param name="csPath">代码</param> ???????/// <param name="dllName">输出dll的路径</param> ???????/// <returns>返回输出内容</returns> ???????private CompilerResults CompilerFromCsPath(string dllName, params string[] csPath) ???????{ ???????????string binpath = Server.MapPath("~/bin/"); ???????????CSharpCodeProvider complier = new CSharpCodeProvider(); ???????????//设置编译参数 ???????????CompilerParameters paras = new CompilerParameters(); ???????????//引入第三方dll ???????????paras.ReferencedAssemblies.Add("System.dll"); ???????????paras.ReferencedAssemblies.Add("System.linq.dll"); ???????????paras.ReferencedAssemblies.Add("System.Web.dll"); ???????????paras.ReferencedAssemblies.Add(binpath + "System.Web.Mvc.dll"); ???????????//是否内存中生成输出 ???????????paras.GenerateInMemory = false; ???????????//是否生成可执行文件 ???????????paras.GenerateExecutable = false; ???????????paras.OutputAssembly = binpath + dllName + ".dll"; ???????????//编译代码 ???????????CompilerResults result = complier.CompileAssemblyFromFile(paras, csPath); ???????????return result; ???????} ???}}流程如下：
mvc启动的时候，只有HomeController，访问TestController会提示404错误
然后点击动态编译TestController，生成dll到bin目录。。再点击访问TestController的时候，就是可以访问的状态了。
这过程中，mvc应用程序会自动重启的。。因为我们的配置仅仅是后台使用，我觉得没必要再去动态加载dll，让他自动重启就行了。。不知道这么想对不对。。请大手子赐教。。
代码下载：https://files.cnblogs.com/files/wxb8/%E5%8A%A8%E6%80%81%E7%BC%96%E8%AF%91.zip
asp.net mvc 动态编译生成Controller
原文地址：http://www.cnblogs.com/wxb8/p/7440303.html