Combine Current Directory with file name in vb.net

Question

I have tested the following two codes .The first one works as I'm giving the full path name but the second one give the error saying the file is not found.The value of the path location is shown same in both the cases.I think i'm not concatenating the stings right.I have also tried to give the filename without the extension.Any help?

1st code

    Dim content As String
    Dim path As String
    path = "C:\Users\****\bin\Debug\tns.txt"
    MessageBox.Show(path)
    Try
        Dim sr As New StreamReader(path)
        content = sr.ReadToEnd()
        Console.WriteLine(content)
        MessageBox.Show(content)
    Catch ex As Exception
        MessageBox.Show(ex.Message.ToString())
    End Try

2nd code

 Dim content As String
    Dim path As String
    path = Directory.GetCurrentDirectory() + "\tns.txt"
    MessageBox.Show(path)
    Try
        Dim sr As New StreamReader(path)
        content = sr.ReadToEnd()
        Console.WriteLine(content)
        MessageBox.Show(content)
    Catch ex As Exception
        MessageBox.Show(ex.Message.ToString())
    End Try

Answer 1

Works with single slash "\tnx.txt"

Answer 2

path = IO.Path.Combine(Directory.GetCurrentDirectory(), "tns.txt")