C# create log file

From the performance point of view your solution is not optimal. Every time you add another log entry with +=, the whole string is copied to another place in memory. I would recommend using StringBuilder instead:

StringBuilder sb = new StringBuilder();
...
sb.Append("log something");

...
// flush every 20 seconds as you do it
File.AppendAllText(filePath+"log.txt", sb.ToString());
sb.Clear();
By the way your timer event is probably executed on another thread. So you may want to use a mutex when accessing your sb object.

Another thing to consider is what happens to the log entries that were added within the last 20 seconds of the execution. You probably want to flush your string to the file right before the app exits.

Similar codes

0 vote224 views1 answer
Cannot convert string to long c#
C#
0 vote181 views1 answer
C# PrincipalContext The network path was not found
C#
4 votes186 views1 answer
Unity rotation between 2 points
C#
0 vote207 views1 answer
Align String with Spaces [C#]
C#
1 vote191 views1 answer
C# measure execution time
C#
0 vote189 views1 answer
Unity c# image invisible
C#
-1 vote189 views1 answer
Get image information using c#
C#
0 vote193 views3 answers
System.Windows.Forms.DataGridView.CurrentRow.get returned null. c#
C#
0 vote245 views1 answer
LINQ query on a DataTable C#
C#
1 vote215 views2 answers
C# bitmap to Image
C#