HttpRuntime.AppDomainAppPath equivalent in ASP.NET Core

Question

What is the equivalent of HttpRuntime.AppDomainAppPath in .NET Core? I moved a project from ASP.NET to core, and a few Libraries are not included (Such as System.Web). Here is a small example:

sb.AppendLine("\"New Path\": \"" + newFile.FullName.Replace(HttpRuntime.AppDomainAppPath, "/");

Any help would be appreciated, thanks

Solution

The IWebHostEnvironment interface provides information about the environment including the base path (ContentRootPath). You can get an instance using dependency injection.

public class Startup
{
    public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    {
        // env.ContentRootPath;
    }
}

EDIT: Previous version of this answer was using now obsolete IHostingEnvironment. Consider using it with .net core version 2.2 or earlier. Credit for pointing this out goes to @Jack Miller.

Comments

[Dr. Roggia]

I've already added an IHontingEnvironment element inside the class. So ContentRootPath will give me the same result as HttpRuntime,AppDomainPath?

[meziantou]

ContentRootPath give the location set in UseContentRoot extension method in Program.cs. By default UseContentRoot(Directory.GetCurrentDirectory()). So, it should give you the same result as HttpRuntime,AppDomainPath.

[Dr. Roggia]

And what if i need the URL Path?

[Maly Lemire]

What if I need it in static constructor?

[meziantou]

Initialize a static property in the Configure method. Then you can get the value of this property in the static constructor.

[Roboneter]

I get my C:/program/../../ result from this, and AppDomainAppPath gives me a path like /LM/W3C/<site id>/<servicename> what am i doing wrong?