How to upload file with ASP.NET web api project?

i have a web API project to be consumed from mobile applications and i was trying to make a file upload controller. there are few resources in C# and i don't find anything useful for VB.NET.

i tried this code below converting from c# to VB.NET, but says "Move is not a member of MultiPartFileData".

<pre>Imports System
Imports System.Collections.Generic
Imports System.IO
Imports System.Linq
Imports System.Net
Imports System.Net.Http
Imports System.Threading.Tasks
Imports System.Web
Imports System.Web.Http

Namespace HelloWorld.Controller
    Public Class FileUploadingController
        Inherits ApiController

        <HttpPost>
        <Route("api/FileUploading/UploadFile")>
        Public Async Function UploadFile() As Task(Of String)
            Dim ctx = HttpContext.Current
            Dim root = ctx.Server.MapPath("~/App_Data")
            Dim provider = New MultipartFormDataStreamProvider(root)

            Try
                Await Request.Content.ReadAsMultipartAsync(provider)

                For Each file In provider.FileData
                    Dim name = file.Headers.ContentDisposition.FileName
                    name = name.Trim(""""c)
                    Dim localFileName = file.LocalFileName
                    Dim filePath = Path.Combine(root, name)
                    File.Move(localFileName, filePath)
                Next

            Catch e As Exception
                Return $"Error: {e.Message}"
            End Try

            Return "File uploaded!"
        End Function
    End Class
End Namespace