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Log file with StreamWriter and StreamReader

Option Explicit On  Option Strict On Imports System Imports System.IO Imports Microsoft.VisualBasic Class DirAppend     Public Shared Sub Main()         Using w As StreamWriter = File.AppendText("log.txt")                          w.Write(ControlChars.CrLf & "Log Entry : ")             w.WriteLine("{0} {1}", DateTime.Now.ToLongTimeString(), DateTime.Now.ToLongDateString())             w.WriteLine("  :")             w.WriteLine("  :{0}", "logMessage")             w.Flush()                          w.Close()         End Using         Using r As StreamReader = File.OpenText("log.txt")             Dim line As String             line = r.ReadLine()             While Not line Is Nothing                 Console.WriteLine(line)                 line = r.ReadLine()             End While             r.Close()                      End Using     End Sub End Class