电话是单一的方法即扩展方法之间的暧昧 [英] The call is ambiguous between single method i.e extension method

问题描述

我有一个像

public static class Extension
{
    public static string GetTLD(this string str)
    {
        var host = new System.Uri(str).Host;
        int index = host.LastIndexOf('.'), last = 3;
        while (index >= last - 3)
        {
            last = index;
            index = host.LastIndexOf('.', last - 1);
        }
        var domain = host.Substring(index + 1);
        return domain;
    }
}

我象

string domain = "." + _url.GetTLD();

我正在逐渐建立和干净生成任何错误。结果
但我正在逐渐编译错误在运行时错误说

在调用以下方法或属性之间暧昧：
  myIGNOU.Extension.GetTLD（字符串）和
  myIGNOU.Extension.GetTLD（字符串）

The call is ambiguous between the following methods or properties: 'myIGNOU.Extension.GetTLD(string)' and 'myIGNOU.Extension.GetTLD(string)'

我发誓，我没有这个扩展方法放置在任何别的地方过该项目。
为什么我只在运行时收到此错误..？

I swear that I don't have this extension method placed any where else too in the project. Why I am getting this error only at run time..?

但是，如果我删除此方法，那么我在制作的时候不是在运行时不收到错误。一切正常没有这个方法的code。

But if I delete this method then I am getting error at build time not not at run time. Everything works fine without the code of this method.

以下是编译错误页面

推荐答案

这是不是一个真正的解决方案，我无法解释它是如何工作，但它的工作。

This is not a real solution and I can't explain how did it work but it worked.

我在项目属性，引用，仓乱投医，OBJ但没有任何帮助我来说真的。而我只是想每一个选项，并选择转换为Web应用程序从上下文菜单。虽然这是一个Web应用程序本身之前。这表明我一个警告说，了.Designer.cs 文件将被添加到每个aspx文件，我只是点击确定。

I was trying everything in Project Properties, References, bin, obj but nothing helped me really. And I was just trying every option and chose 'Convert to Web Application' from the context menu. Although It was a Web Application itself before. It showed me a warning saying that .designer.cs files will be added to each aspx file and I just clicked OK.

一切仍然只是 APP_ code 同一文件夹中（所有这些类人）被重命名为老APP_ code ，我会构建项目。现在我不是在运行时获得编译错误。

Everything remained same except App_Code folder (where all these classes were) was renamed to Old App_Code and I'd build the project. And now I am not getting compilation error at run time.

我知道APP_ code文件夹是为了网站项目，我是有这个没什么事，直到这次在WAP。但我只是知道我不应该APP_ code文件夹中的WAP，因为它是在<一个在这里讨论href=\"http://p2p.wrox.com/book-beginning-asp-net-3-5-c-vb-book-isbn-978-0-470-18759-3/73539-app_$c$c-folder-web-application-project.html#post237879\">wrox论坛（第1点）。笔者在这里说，

I know App_Code folder are meant to Website Project and I was having no issue with this till this time in WAP. But I just realize I should not have App_Code folder in WAP as it is discussed here in a wrox forum (1st point). Author has said here that

APP_ code未在一个WAP支持。该APP_ code文件夹是在编译
  运行时的;在WAP的所有code编译/开发时间进行编译。所以，当你添加一个APP_ code文件夹复制到WAP。你结束了
  复制code;例如，在APP_ code中定义的类也将
  在WAP DLL露面。解决方法是简单：只需将文件夹命名
  别的像类或codeFiles。

App_Code is not supported in a WAP. The App_Code folder is compiled at run-time; all code in a WAP is compiled at compile / development time. So, when you add an App_Code folder to a WAP. you end up with duplicate code; for example, a class defined in App_Code will also show up in the wap DLL. The fix is easy: just name the folder something else like Classes or CodeFiles.

我已经尝试过太更名转换前，但当时没有工作。

I have tried it renaming too before conversion but that time it did not work.

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