Selenium：WebDriver - System.TypeLoadException在每次运行最基本的项目时都未处理 [英] Selenium: WebDriver - System.TypeLoadException unhandled every time I run the most basic project

问题描述

System.TypeLoadException未被处理

HResult = -2146233054

Message =无法从程序集加载类型'OpenQA.Selenium.Firefox.FirefoxDriver'>'WebDriver，Version = 0.0.0.0，Culture = neutral，PublicKeyToken = null'。

Source = WebDriver

TypeName = OpenQA.Selenium.Firefox.FirefoxDriver

StackTrace：

at Driver.Main（String [] args）

at System.AppDomain._nExecuteAssembly（RuntimeAssembly程序集，字符串[] args）
$ b $在System.AppDomain.ExecuteAssembly（字符串assemblyFile，证据
assemblySecurity，字符串[] args）

at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly（）
$ System.Threading.ThreadingHelper.ThreadStart_Context（Object state）
$ System.Threading.ExecutionContext.RunInternal（$ ExecutionContext
$ b $ > executionContext，ContextCallback回调，Object状态，布尔值在System.Threading.ExecutionContext.Run（ExecutionContext executionContext，
> ContextCallback回调，对象状态，布尔preserveSyncCtx）

在$ System.Threading.ExecutionContext.Run ExecutionContext executionContext，
> ContextCallback callback，Object state）
在System.Threading.ThreadHelper.ThreadStart（）
$ b $ InnerException：

我在Windows 8上运行Visual C＃2010。我将目标框架更改为.Net Framework 4（来自.Net Framework 4 Client Profile）。我尝试了三大浏览器：

pre $ // IWebDriver driver = new FirefoxDriver（）;
// IWebDriver driver = new ChromeDriver（）;
IWebDriver driver = new OpenQA.Selenium.IE.InternetExplorerDriver（）;


每次都是相同的错误（基本上是这样）。代码直接出自他们的文档：
http://docs.seleniumhq.org/docs/03_webdriver.jsp#introducing-the-selenium-webdriver-api-by-example

<任何帮助将不胜感激。刚开始与硒，希望自动化几个简单的任务开始。如果我在得到答案之前弄明白了，我会把它作为更新发布。

编辑：试着清理格式化一下。

解决方案

发生此错误是因为我在添加引用之前尝试编译新的基于Selenium的项目。在我意识到错误之后，我添加了对所有程序集的引用，并且仍然有错误。事实证明，Visual Studio卡住了，因为我现在知道并不少见。 IDE的快速重新启动是必要的。

Error details:

System.TypeLoadException was unhandled
HResult=-2146233054
Message=Could not load type 'OpenQA.Selenium.Firefox.FirefoxDriver' from assembly
>'WebDriver, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null'.
Source=WebDriver
TypeName=OpenQA.Selenium.Firefox.FirefoxDriver
StackTrace:
at Driver.Main(String[] args)
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence
assemblySecurity, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
>executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext,
>ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext,
>ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart()
InnerException:

I am running Visual C# 2010 on Windows 8. I changed the target framework to .Net framework 4 (from .Net framework 4 Client Profile). I tried the big three browsers:

    //IWebDriver driver = new FirefoxDriver();
    //IWebDriver driver = new ChromeDriver();
    IWebDriver driver = new OpenQA.Selenium.IE.InternetExplorerDriver();

Same error every time (basically, anyway). The code comes straight out of their docs: http://docs.seleniumhq.org/docs/03_webdriver.jsp#introducing-the-selenium-webdriver-api-by-example

Any help would be greatly appreciated. Just starting out with Selenium, hoping to automate a few simple tasks to start out. If I figure it out before I get an answer, I'll post it as an update.

Edit: tried to clean up formatting a bit.

解决方案

This error occurred because I tried to compile a new Selenium based project before I added the references. After I realized the mistake I added references to all the assemblies, and still got the error. Turns out Visual Studio was "stuck" as I am now aware is not uncommon. A quick restart of the IDE was all that was necessary.

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