System.IO.Path.GetTempFileName C# (CSharp) Méthode

        public static string GetTempFileName()
        {
            string path = GetTempPath();

            StringBuilder sb = StringBuilderCache.Acquire(MaxPath);
            uint r = Interop.Kernel32.GetTempFileNameW(path, "tmp", 0, sb);
            if (r == 0)
                throw Win32Marshal.GetExceptionForLastWin32Error();
            return StringBuilderCache.GetStringAndRelease(sb);
        }

        private async void RunByStep(object sender, RoutedEventArgs e)
        {
            if (_firstStep)
            {
                var tmp = Path.GetTempFileName();
                await File.WriteAllTextAsync(tmp, PCode.Text);

                Input.IsReadOnly = false;
                var buffer     = new StringBuilder();
                var stepOutput = "";
                var curIns     = "";
                var pc         = 0;
                _firstStep = false;
                await RunAsync(
                    tmp,
                    (_, e) =>
                {
                    // Console.Out.WriteLine(e.Data);
                    if (e.Data?.StartsWith("**") ?? false)
                    {
                        var output = stepOutput;
                        var ins    = curIns;
                        Dispatcher.Invoke(() =>
                        {
                            Stack.Text = buffer.ToString();
                            Exec.Text += output;
                            PCode.Focus();
                            //Console.Out.WriteLine(pc);
                            if (pc == -99)
                            {
                                return;
                            }
                            var idx = PCode.GetCharacterIndexFromLineIndex(pc);
                            PCode.Select(idx, ins.Length);
                        }, DispatcherPriority.Render);
                        buffer.Clear();
                        stepOutput = "";
                        curIns     = "";
                    }
                    else if (e.Data?.StartsWith("print") ?? false)
                    {
                        stepOutput = e.Data + "\n";
                    }
                    else if (e.Data?.StartsWith("Press") ?? false)
                    {
                        // do nothing
                    }
                    else
                    {
                        if (e.Data?.StartsWith("-->") ?? false)
                        {
                            curIns = e.Data.Substring(9);     // catch ins
                        }

                        if (e.Data?.StartsWith("PC =") ?? false)
                        {
                            Console.Out.WriteLine(e.Data.Substring(5));
                            pc = int.Parse(e.Data.Substring(5));     // catch PC
                        }
                        buffer.AppendLine(e.Data);
                    }
                },
                    true
                    );
            }
            await(_inputWriter?.WriteLineAsync("c") ?? Task.FromResult(1));
        }