Data commit

Task/Take-notes-on-the-command-line/C-sharp/take-notes-on-the-command-line.cs

@@ -0,0 +1,33 @@
+using System;
+using System.IO;
+using System.Text;
+
+namespace RosettaCode
+{
+  internal class Program
+  {
+    private const string FileName = "NOTES.TXT";
+
+    private static void Main(string[] args)
+    {
+      if (args.Length==0)
+      {
+        string txt = File.ReadAllText(FileName);
+        Console.WriteLine(txt);
+      }
+      else
+      {
+        var sb = new StringBuilder();
+        sb.Append(DateTime.Now).Append("\n\t");
+        foreach (string s in args)
+          sb.Append(s).Append(" ");
+        sb.Append("\n");
+
+        if (File.Exists(FileName))
+          File.AppendAllText(FileName, sb.ToString());
+        else
+          File.WriteAllText(FileName, sb.ToString());
+      }
+    }
+  }
+}