从 ChatBot 中的项目文件夹中读取 JSON 文件

Question

I would like to read json files to present an adaptive card, but I am missing how to get the path to the files. Like I have a card_a.json file in my wwwwroot folder.

public async Task<string> GetCardText(string cardName)
{
    var path = $"/wwwroot/{cardName}.json";
    if (!File.Exists(path))
        return string.Empty;

    using (var f = File.OpenText(path))
    {
        return await f.ReadToEndAsync();
    }
}

I tried $"/wwwroot/{cardName}.json" , $"/{cardName}.json" and $"{cardName}.json" , none of them worked.
I've read this article, but didn't help, the sample fails here:

var path = HostingEnvironment.MapPath($"/Cards/{cardName}.json");

With an error: HostingEnvironment does not contain a definition for MapPath. Adding using System.Web didn't solve this issue. VS says that adding this is unnecessary.

Answer 1

Does the cardname.json file need to reside in the wwwroot folder? You could save a lot of permission and path problems by storing them in the application root, or a subfolder of that.