类库代码中的Url.Content类型方法

Question

I have this code in a class library:

string.Format("{0}://{1}", Current.Request.Url.Scheme, Current.Request.Url.Authority);

This works fine if the application is deployed in the root domain and not a subdomain.

I would like to adapt the above to work for a sub domain as well. In the razor code I can just use:

Url.Content("~/")

Is there an equivalent for this for class libraries ('web independent' C# code)?

Answer 1

This little function will get the application root folder, eg '/' or '/sub-folder/' :

string GetAppRootFolder()
{
    var appRootFolder = HttpContext.Current.Request.ApplicationPath.ToLower();

    if (!appRootFolder.EndsWith("/"))
    {
        appRootFolder += "/";
    }

    return appRootFolder;
}