asked on

Window Service Crashed

Hi Expert,

I work on an existing window service to transfer PDFs to TIFs.
But if one pdf is empty. It will crash the window service. The program could not work on next pdf. And I could not delete it.

The WS could not work on next pdf until I deleted the problem pdf and restarted the WS.
I want to make WS fault tolerant. Please help! Appreciated!!

        private void Convert(string strInput)
        {
            Boolean blnSuccess = true;
            string strOutput = "";

            if (!File.Exists(strInput))
            {
                Log(enumLogLevel.Warning, "File not found: " + strInput);
                return;
            }

            try
            {
                strOutput = GenerateOutputFilename(strInput);

                switch (strConvertFromType)
                {
                    case "pdf":
                        ConvertPDFToImage(strInput, strOutput);
                        break;
                    default:
                        if (strConvertToType == "pdf")
                        {
                            CreatePDF(strInput, strOutput);
                        }
                        else
                        {
                            if (blnConvert1BPP == true)
                                ConvertImage1BPP(strInput, strOutput);
                            else
                                ConvertImage(strInput, strOutput);
                        }
                        break;
                }
            }
            catch (Exception ex)
            {
                blnSuccess = false;
                Log(enumLogLevel.Warning, "Error converting image: " + strInput + " - " + ex.Message);
            }

            if (blnSuccess && blnDeleteSourceFile)
            {
                try
                {
                    File.Delete(strInput);
                }
                catch (Exception ex)
                {
                    Log(enumLogLevel.Warning, "Error removing file: " + strInput + " - " + ex.Message);
                }
            }

            return;
        }

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Korbus

What the last thing you Log() before it crashes?

jssong2000

ASKER

Log(enumLogLevel.Warning, "File not found: " + strInput);

Thanks!!

jssong2000

ASKER

Please see below and attachment for the whole process:

using System;
using System.Collections.Generic;
using System.Linq;
using System.ServiceProcess;
using System.Text;

namespace ImageConverterService
{
static class Program
{
/// <summary>
/// The main entry point for the application.
/// </summary>
static void Main()
{
ServiceBase[] ServicesToRun;
ServicesToRun = new ServiceBase[]
                  {
                        new ImageConverter()
                  };
ServiceBase.Run(ServicesToRun);
}
}
}
ImageConverter.cs

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Korbus

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jssong2000

ASKER

FileName is correct. It threw an exception when it's an empty file.
Modified to log the problem but continue process.