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(){ ... }
}
在我的例子中,MissingMethodException是针对同一个文件中的一个方法!
然而,我刚刚添加了一个使用. net Standard2的NuGet包到我的4.7.1-targeting项目中,这导致了System.Net.Http的版本冲突(4.7.1:版本4.0.0.0,使用. net Standard2的NuGet包需要4.2.0.0)。这似乎是已知的问题,应该更好的4.7.2(见注2)。
我在所有其他项目中都使用了这样的绑定重定向,因为一旦它试图加载4.2.0.0,就会出现异常:
<dependentAssembly>
<assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-4.2.0.0" newVersion="4.0.0.0" />
</dependentAssembly>
除了在这个项目中,它似乎只是在调用使用System.Net.Http.HttpResponseMessage作为参数或返回类型的本地函数时试图加载System.Net.Http(调试期间的参数,在没有调试器的情况下运行测试时的返回类型,这也有点奇怪)。而不是显示消息,它无法加载4.2.0.0版本的System.Net。Http,它返回这个异常。
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。