有几种方法可以做到这一点。此页面涵盖了大多数

我个人可能要做的是定义一个SeleniumContext类，并在所有Step类的构造函数中都需要该类，然后告诉SpecFlow的IOC在每种情况下都使用相同的实例：

首先创建用于保存硒驱动程序实例的类

public class SeleniumContext
{
     public SeleniumContext()
     {
          //create the selenium context
          WebDriver = new ...create the flavour of web driver you want
     }

     public IWebDriver WebDriver{get; private set;} 
}

然后将IOC设置为每次返回相同的实例

[Binding]
public class BeforeAllTests
{
    private readonly IObjectContainer objectContainer;
    private static SeleniumContext seleniumContext ;

    public BeforeAllTests(IObjectContainer container)
    {
        this.objectContainer = container;
    }

    [BeforeTestRun]
    public static void RunBeforeAllTests()
    {
        seleniumContext = new SeleniumContext();
     }

    [BeforeScenario]
    public void RunBeforeScenario()
    {            
        objectContainer.RegisterInstanceAs<SeleniumContext>(seleniumContext );
    }
}

然后确保您的步骤类始终在其构造函数中要求上下文（您需要在每个步骤类中都执行此操作）

[Bindings]
public class MySteps
{
    private SeleniumContext seleniumContext;

    public MyClass(SeleniumContext seleniumContext)
    {
         //save the context so you can use it in your tests
         this.seleniumContext = seleniumContext;
    }

    //then just use the seleniumContext.WebDriver in your tests
}

或者，如果您已经将实例存储在功能上下文中，则可以使用BeforeFeature挂钩保存相同的实例：

[Binding]
public class BeforeAllTests
{
    private static WebDriver webDriver;

    [BeforeTestRun]
    public static void RunBeforeAllTests()
    {
        webDriver = new WebDriver();
     }

    [BeforeFeature]
    public static void RunBeforeFeature()
    {
        FeatureContext["WebDriver"] = webDriver;
     }

}