为什么 Resharper 认为此代码无法访问

Question

在编码时，我注意到 ReSharper (v2019.1.1) 认为我的部分代码无法访问：

我学会了信任 ReSharper，所以我构建了一个测试工具来查看发生了什么：

void Main()
{
    List<string> scopeList = new List<string>();
    Dictionary<string, string> customFields = new Dictionary<string, string>();

    var mainScope = new Scope();
    var subScope = new Scope();
    subScope.Parent = mainScope;

    dynamic currentState = new Tuple<String, int>("bob", 1565);
    mainScope.State = currentState;
    subScope.State = "Hello";

    WriteScopes(subScope, scopeList, customFields);

    Console.WriteLine(customFields);
    Console.WriteLine(scopeList);
}

public void WriteScopes(Scope scope, List<string> scopeList, Dictionary<string, string> customFields)
{
    var loopScope = scope;

    while (loopScope != null)
    {
        var loopState = loopScope.State;
        if (loopState == null) continue;
        if (loopState is (string name, var value))
        {
            customFields.Add(name, value.ToString());
        }
        else
        {
            scopeList.Add(loopState.ToString());
        }

        loopScope = loopScope.Parent;
    }
}

public class Scope
{
    public Scope Parent { get; set; }
    public object State { get; set; }
}

当我运行我的测试时，似乎 "unreachable code" 正在被 "Hello" 字符串执行。但正如我上面所说，我已经学会信任 ReSharper，所以我想知道这是怎么回事？

为什么 ReSharper 认为代码无法访问？

Answer 1

嗯，我确实不知道为什么代码被标记为无法访问，但在 my VS 和 ReSharper 2019.3.4 中，我没有看到消息。这可能是工具中的错误。

为什么 Resharper 认为此代码无法访问

Why does Resharper Think This Code is Unreachable

c#

.net-core

resharper