以前工作的asp.net webforms应用程序现在抛出这个错误:
系统。MissingMethodException:方法未找到
DoThis方法在同一个类上，它应该可以工作。
我有一个通用的处理程序，这样:
public class MyHandler: IHttpHandler
{
public void Processrequest(HttpContext context)
{
// throws error now System.MissingMethodException:
// Method not found.
this.DoThis();
}
public void DoThis(){ ... }
}
当前回答
我有一个测试项目，它引用了另外两个项目，每个项目引用了同一个dll的不同版本(在不同的位置)。这使编译器感到困惑。
其他回答
你试过把它关掉再打开吗?玩笑归玩笑，重启电脑才是真正让我成功的方法，其他答案中都没有提到。
重新启动Visual Studio实际上为我解决了这个问题。我认为这是由于旧的程序集文件仍然在使用造成的，执行“清洁构建”或重新启动VS应该会修复它。
只是为了帮助任何人，虽然这是一个老问题，我的问题有点奇怪。
我在使用Jenkins时遇到了这个错误。
最终发现系统日期被手动设置为未来日期，这导致dll使用该未来日期编译。当日期被设置回正常时，MSBuild解释为文件更新，不需要重新编译项目。
I had a similar scenario where I was getting this same exception being thrown. I had two projects in my web application solution, named, for sake of example, DAL and DAL.CustSpec. The DAL project had a method named Method1, but DAL.CustSpec did not. My main project had a reference to the DAL project and also a reference to another project named AnotherProj. My main project made a call to Method1. The AnotherProj project had a reference to the DAL.CustSpec project, and not the DAL project. The Build configuration had both the DAL and DAL.CustSpec projects configured to be built. After everything was built, my web application project had the AnotherProj and DAL assemblies in its Bin folder. However, when I ran the website, the Temporary ASP.NET folder for the website had the DAL.CustSpec assembly in its files and not the DAL assembly, for some reason. Of course, when I ran the part that called Method1, I received a "Method not found" error.
为了修复这个错误，我必须从DAL更改AnotherProj项目中的引用。CustSpec到只是DAL，删除了临时ASP中的所有文件。NET Files文件夹，然后重新运行网站。从那以后，一切都开始运转了。我还确保了DAL。在“生成配置”中取消选中CustSpec项目后，没有生成该项目。
我想我要分享这个，也许它能在未来帮助到其他人。
我在我的ASP中遇到了同样的情况。网的网站。我删除了发布的文件，重启VS，重新清理和重建项目。在下一次发布之后，错误就消失了……
