Name 'Server' not declared

Question

hi this is kavita I m just reading a text file and code is Try filename = Server.MapPath(file_path) 'st_reader = New StreamReader( 'Dim path1 As String = ser st_reader = New System.IO.StreamReader(filename) st_reader = File.OpenText(filename) data = st_reader.ReadToEnd() data = data.ToLower() st_reader.Dispose() st_reader.Close() Catch ex As Exception End Try Return data but it gives an error Name 'Server' not declared and when I upload my site it is very very slow. can anyone help me?