ASP.NET MVC的路线，不从一些文字 [英] ASP.NET MVC route that doesn't start with some literal

问题描述

我需要创建一个路由的网址，不从一些立即开始。我创建了以下路由定义：

I need to create a route for url that doesn't start from some literal. I have created the following route definition:

    routes.MapRoute("",
                    "{something}",
                    new { Controller = "Home", Action = "Index" },
                    new
                        {
                            something = "^(?!sampleliteral)"
                        });

但看起来像它不工作

but looks like it doesn't work

推荐答案

您可以尝试用一个路由约束：

You may try with a route constraint:

public class MyConstraint: IRouteConstraint
{
    public bool Match(HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
    {
        var value = values[parameterName] as string;
        if (!string.IsNullOrEmpty(value))
        {
            return !value.StartsWith("sampleliteral", StringComparison.OrdinalIgnoreCase);
        }
        return true;
    }
}

然后：

routes.MapRoute(
    "",
    "{something}",
    new { Controller = "Home", Action = "Index", something = UrlParameter.Optional },
    new { something = new MyConstraint() }
);

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