Display data from latest text file into richtextbox

Question

I want to display the latest text file that has been created in the richtextbox. The name for each text file is having a datetime.

 

I'm having a problem to display the data from latest txt file into the richtextbox.

 

This is the example of text file that has been created.

 

 

 

This is my code at this moment :

private void CheckSN()
{
      string strComputerName = Environment.MachineName.Substring(4);
      string Path = $@"Z:\FC\Share\PC\TR-{strComputerName}\SS\SN\{strComputerName}_DataFile.txt";
   string logPath = $@"Z:\FC\Share\PC\TR-{strComputerName}\SS\SysLog\SystemLog_{DateTime.Now:ddMMyyyy-hhmm}.txt";
   if (File.Exists(Path))
   {
   var data = File
   .ReadAllLines(Path)
   .Select(x => x.Split('='))
   .Where(x => x.Length > 1)
   .ToDictionary(x => x[0].Trim(), x => x[1]);
   using (StreamWriter tw = File.CreateText(logPath))
   {
      tw.WriteLine("Read the details..\n");
      tw.WriteLine("Name: {0}", data["Name"]);
      tw.WriteLine("Emp ID {0}", data["EmpID"]);
      tw.WriteLine("---------------------------------------------\n");
   }
}

private void richTextBox1_TextChanged(object sender, EventArgs e)
{
    string strComputerName = Environment.MachineName.ToString().Substring(4);
    string logPath = $@"Z:\FC\Share\PC\TR-{strComputerName}\SS\SysLog\SystemLog.txt";
    richTextBox1.Text = File.ReadAllText(logPath, Encoding.Default);
}

How can I display the latest text file that has been created (SystemLog_01102020-1040) in the richtextbox?