class Program
{
    static void Main()
    {
        string line = "";
        using (StreamReader sr = new StreamReader(@"C:\test.txt"))
        {
            while ((line = sr.ReadLine()) != null)
            {
                Console.WriteLine(line);
            }
        }
        Console.ReadKey();
    }
}

Imports System.IO

Class Program
	Private Shared Sub Main()
		Dim line As String = ""
		Using sr As New StreamReader("C:\test.txt")
			While (InlineAssignHelper(line, sr.ReadLine())) IsNot Nothing
				Console.WriteLine(line)
			End While
		End Using
		Console.ReadKey()
	End Sub
	Private Shared Function InlineAssignHelper(Of T)(ByRef target As T, value As T) As T
		target = value
		Return value
	End Function
End Class