从 DNX 迁移到 ASP.NET Core 2.0 时 API 丢失/更改

我一直致力于将应用程序从过时的 DNX 迁移到 ASP.NET Core 2.0。在这样做的过程中，我们发现命名空间和 API 几乎没有变化，例如Microsoft.AspNet to Microsoft.AspNetCore。尽管我已经能够找到并修复大部分更改，但以下更改给我带来了问题：

在继承自的类中Route， 之内RouteAsync(RouteContext context)方法，使用 DNX 是context.IsHandled = true;，我如何表示现在已使用 ASP.NET Core 2.0 处理此问题？

我尝试从 GitHub 查找更改历史记录，但似乎没有与此相关的内容。

不再需要调用context.IsHandled from RouteAsync。如果您这样做，框架就会知道跳到下一条路线return没有Task。如果您返回一个任务，那么框架将处理（处理）它。

旧的 DNX / MVC6 / 预览代码

public async Task RouteAsync(RouteContext context)
{
    var requestPath = context.HttpContext.Request.Path.Value;

    if (!string.IsNullOrEmpty(requestPath) && requestPath[0] == '/')
    {
        // Trim the leading slash
        requestPath = requestPath.Substring(1);
    }

    // Get the page id that matches.
    TPrimaryKey id;

    //If this returns false, that means the URI did not match
    if (!GetPageList().TryGetValue(requestPath, out id))
    {
        return;
    }

    //Invoke MVC controller/action
    var oldRouteData = context.RouteData;
    var newRouteData = new RouteData(oldRouteData);
    newRouteData.Routers.Add(_target);

    newRouteData.Values["controller"] = _controller;
    newRouteData.Values["action"] = _action;

    // This will be the primary key of the database row.
    // It might be an integer or a GUID.
    newRouteData.Values["id"] = id;

    try
    {
        context.RouteData = newRouteData;
        await _target.RouteAsync(context);
    }
    finally
    {
        // Restore the original values to prevent polluting the route data.
        if (!context.IsHandled)
        {
            context.RouteData = oldRouteData;
        }
    }
}

新的 .NET Core 1.x / .NET Core 2.x 代码

public async Task RouteAsync(RouteContext context)
{
    var requestPath = context.HttpContext.Request.Path.Value;

    if (!string.IsNullOrEmpty(requestPath) && requestPath[0] == '/')
    {
        // Trim the leading slash
        requestPath = requestPath.Substring(1);
    }

    // Get the page id that matches.
    TPrimaryKey id;

    //If this returns false, that means the URI did not match
    if (!GetPageList().TryGetValue(requestPath, out id))
    {
        return;
    }

    //Invoke MVC controller/action
    var routeData = context.RouteData;

    routeData.Values["controller"] = _controller;
    routeData.Values["action"] = _action;

    // This will be the primary key of the database row.
    // It might be an integer or a GUID.
    routeData.Values["id"] = id;

    await _target.RouteAsync(context);
}

完整代码在这里（针对 .NET Core 1/2 进行了更新）：启动后更改MVC6的路由集合 https://stackoverflow.com/q/32565768