Question

我正在使用4.5库，我想在函数的特定位置调用函数pass作为参数。

当前作为参数传递的方法在传递参数的方法之前被调用。

这是我当前的代码

ApiCall<EntityMessage>.CallApi(token, ServicesMessage.Get(messageId));

public static HttpResponseMessage CallApi(string token, T method)
{
    HttpResponseMessage response = ServicesAPIAuth.CheckToken(token);

    if (response.StatusCode == HttpStatusCode.OK)
    {
        //want to call the method passed here
        response = ServicesJsonWebApi.FormatJsonApiResponse(method, HttpStatusCode.OK);
    }

    return response;
}

所以我想在写评论的地方打电话给ServicesMessage.Get(messageId)

Answer 1

您真正要寻找的是Func<T>代表

public static HttpResponseMessage CallApi(string token, Func<T> method) {
    HttpResponseMessage response = ServicesAPIAuth.CheckToken(token);

    if (response.StatusCode == HttpStatusCode.OK) {
        //call the method passed here
        response = ServicesJsonWebApi.FormatJsonApiResponse(method(), HttpStatusCode.OK);
    }

    return response;
}

然后像这样称呼

ApiCall<EntityMessage>.CallApi(token, () => ServicesMessage.Get(messageId));

稍后调用委托函数C＃MVC

1 个答案: