In some situations, a notepad window opened after logging start would not receive log messages.

Author: bstordrup

sample/ConsoleDemo/Program.cs

@@ -14,9 +14,9 @@
 //
 #endregion
 
+using Serilog;
 using System;
 using System.Threading;
-using Serilog;
 
 namespace ConsoleDemo
 {
@@ -33,15 +33,23 @@ private static void Main(string[] args)
 
             try
             {
-                Console.WriteLine("Open a `notepad.exe` instance and press <enter> to continue...");
-                Console.ReadLine();
+                //Console.WriteLine("Open a `notepad.exe` instance and press <enter> to continue...");
+                //Console.ReadLine();
 
                 Console.WriteLine("Writing messages to the most recent Notepad you opened...");
 
                 Log.Debug("Getting started");
 
-                Log.Information("Hello {Name} from thread {ThreadId}", Environment.GetEnvironmentVariable("USERNAME"),
-                    Thread.CurrentThread.ManagedThreadId);
+                var startTime = DateTime.Now;
+
+                while (DateTime.Now - startTime < TimeSpan.FromMinutes(1))
+                {
+
+                    Log.Information("Hello {Name} from thread {ThreadId}", Environment.GetEnvironmentVariable("USERNAME"),
+                        Thread.CurrentThread.ManagedThreadId);
+
+                    Thread.Sleep(1000);
+                }
 
                 Log.Warning("No coins remain at position {@Position}", new { Lat = 25, Long = 134 });
 

src/Serilog.Sinks.Notepad/Sinks/Notepad/Interop/NotepadTextWriter.cs

@@ -57,7 +57,10 @@ public override void Flush()
                     // No instances of Notepad found... Nothing to do
                     return;
                 }
+            }
 
+            if (_currentNotepadEditorHandle == IntPtr.Zero)
+            {
                 var notepadWindowHandle = currentNotepadProcess.MainWindowHandle;
 
                 var notepadEditorHandle = FindNotepadEditorHandle(notepadWindowHandle);