It maybe inaccessible due to its protection level - vb.net

Question

I was trying to code a download manager but get this error:
'save' is not declared. It maybe inaccessible due to its protection level
Here is my code:
Imports System.Net
Public Class Form1
Private WithEvents httpclient As webClient
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
ListBox1.Items.Add(TextBox1.Text)
TextBox1.Clear()
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
SaveFileDialog1.ShowDialog()
End Sub
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Try
httpclient = New WebClient
Dim total As Integer = ListBox1.Items.Count
Dim current As Integer = -1
While current < total
ListBox1.SelectedIndex = current + 1
Dim download As String = ListBox1.SelectedItem
httpclient.DownloadFileAsync(New Uri(download), save)
Label3.Text = "Current Status: Downloading:..."
Do While httpclient.IsBusy
Application.DoEvents()
Loop
current = current + 1
End While
Catch ex As Exception
ListBox1.Items.Clear()
End Try
End Sub
End Class

Answer 1

DownloadFileAsync takes 2 parameters. The first is the URL of the file to download and the second is the local location to save the file. The tutorial you were following likely set the variable Save somewhere in the code.
To get this to work, you can replace it with something like "C:\Test.txt" to download it to that location or define the variable Save and set it's value to the location you want to save the file.
With your existing code, to allow a user to select the save location, you need to make the following changes. Declare the Save variable private to the form, under the Public Class Form1 line:
Private Save as string
Then in your Button1_Click event, it should look more like this:
If SaveFileDialog1.ShowDialog() = DialogResult.OK Then
Save = SaveFileDialog1.FileName
End If

Answer 2

Dim download As String = ListBox1.SelectedItem
httpclient.DownloadFileAsync(New Uri(download), "save")