Comments by Dave Kreskowiak (Top 200 by date)

public static string DocConvertionUrl = "https://xxx.com/doc2pdf";

        private Task AttemptToOpenAsync(string filepath)
        {
            return Task.Factory.StartNew(() =>
            {
                bool available = false;

                while (!available)
                {
                    available = IsAvailable(filepath);
                    Log($"IsAvailable: {available}");

                    if (!available)
                    {
                        Thread.Sleep(1000);
                    }
                }

                return available;
            });
        }

        private bool IsAvailable(string filepath)
        {
            bool result = false;

            try
            {
                using (FileStream fs = new FileStream(filepath, FileMode.Open, FileAccess.Read, FileShare.None))
                {
                    result = true;
                }
            }
            catch (FileNotFoundException ex)
            {
                // Log(ex.Message);
            }
            catch (IOException ex)
            {
                // Log(ex.Message);
            }

            return result;
        }

serialPort1.Write("02(hex)B03(hex)");

<Color x:Key="BackgroundColor">LightBlue</Color>
<Color x:Key="HightlightColor">Yellow</Color>
<SolidColorBrush x:Key="BackgroundBrush" Color="{StaticResource BackgroundColor}" />
<SolidColorBrush x:Key="HighlightBrush" Color="{StaticResource HightlightColor}" />

<ColorAnimation Storyboard.TargetName="Border"
    Storyboard.TargetProperty="Background.Color"
    From="{StaticResource BackgroundColor}" 
    To="{StaticResource HightlightColor}" 
    Duration="0:0:0.3" 
    AutoReverse="True"
    RepeatBehavior="Forever" />