为何将参数传递给我自己的Startup类? [英] Hw to pass arguments to my own Startup class?

问题描述

我正在尝试使用OWIN开发一个Web API自托管应用程序. 在我自己的XyzStartup类中，我需要一个外部参数:contentFolderPath.

I'm trying to develop a web api self hosting app using OWIN. In my own XyzStartup class, I need an external argument: contentFolderPath.

但是，我没有找到传递这种说法的方法.这是我的代码如下:

However, I didn't find a way to pass this argument. Here is my code below:

var contentFolderPath = this.TextBox.Text; // user input

var startOptions = new StartOptions();
using(WebApp.Start<XyzStartup>(startOptions)){

}

我的创业公司

public class XyzStartup
{
     XyzStartup(string contentFolderPath) {  ...  }
}

我注意到有一个StartOption类，但是没有如何使用它.我可以在我的XyzStartup类中使用它吗?

I noticed there is a StartOption class, but don't how to use it. Can I use it in my XyzStartup class?

提前谢谢！

我终于找到了一种方法:

I finally find a way to do this:

var startOptions = new StartOptions();
startOptions.Urls.Add('..some url ..');

WebApp.Start(startOptions, (appBuilder)=>{
    new XyzStartup(contentFolderPath).Configuration(appBuilder);
}

推荐答案

如果要将参数传递给StartUp类，则可以在WebApp中使用Action<IAppBuilder>.像注释中提到的CilliéMalan一样启动，而不是使用Type参数启动(WebApp.Start<T>)

If you want to pass parameter to StartUp class, you can use Action<IAppBuilder> in WebApp.Start like Cillié Malan mentioned in the comment instead of launching with Type parameter(WebApp.Start<T>)

以下是自我托管的具体示例:

Here is a concrete example for self-hosting:

object someThingYouWantToAccess;
var server = WebApp.Start("http://localhost:8080/", (appBuilder) =>
{
    // You can access someThingYouWantToAccess here

    // Configure Web API for self-host.
    HttpConfiguration config = new HttpConfiguration();
    config.MapHttpAttributeRoutes();
    config.Routes.MapHttpRoute(
        name: "DefaultApi",
        routeTemplate: "api/{controller}/{id}",
        defaults: new { id = RouteParameter.Optional }
    );
    appBuilder.UseWebApi(config);
});

这篇关于为何将参数传递给我自己的Startup类?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！