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I have a piece of code that checks if 3 specifically named files are present or not.

string[] filePaths = FilterFiles(ProgramSettings.DFLogPath, "*.log", DateTime.Now, "yyyy_MM_dd");
        filePaths = filePaths.Where(file => new FileInfo(file).Name.IndexOf("validate_NewMasterFile", StringComparison.OrdinalIgnoreCase) > -1 || new FileInfo(file).Name.IndexOf("validate_AuthFile", StringComparison.OrdinalIgnoreCase) > -1 || new FileInfo(file).Name.IndexOf("TransactionDatafeedLogFile", StringComparison.OrdinalIgnoreCase) > -1).ToArray<string>();
        if (filePaths.Length != 3)
            LogThis("No. of files found: " + filePaths.Length, "r");

            LogThis("Files found:", "r");
            foreach (string filePath in filePaths)
                LogThis(new FileInfo(filePath).Name, "r");

            return false;
            string validate_NewMasterFile = "";
            string validate_AuthFile = "";
            string TransactionDatafeedLogFile = "";

            foreach (string filePath in filePaths)
                if (filePath.IndexOf("validate_NewMaster", StringComparison.OrdinalIgnoreCase) > -1)
                    validate_NewMasterFile = new FileInfo(filePath).Name;
                else if (filePath.IndexOf("validate_Auth", StringComparison.OrdinalIgnoreCase) > -1)
                    validate_AuthFile = new FileInfo(filePath).Name;
                else if (filePath.IndexOf("TransactionDatafeedLog", StringComparison.OrdinalIgnoreCase) > -1)
                    TransactionDatafeedLogFile = new FileInfo(filePath).Name;

            LogThis("All files found", "g");
            LogThis("Master DataFeed log: " + validate_NewMasterFile, "g");
            LogThis("Auth DataFeed log: " + validate_AuthFile, "g");
            LogThis("Transaction DataFeed log: " + TransactionDatafeedLogFile, "g");

There should be only 3 files in the folder (one of each name). The second line of code can return 3 even if there are 3 files named "TransactionDatafeedLog". It does not make sure that for each name, there is only one file.

Please notice that in the else part, I had to iterrate through the files to make sure that the all 3 files are present. I can check the strings (ex TransactionDatafeedLog), if its empty than its not present. If there are 2 or more files named like TransactionDatafeedLog, then the loop will select the last file and will not notice it as an error.

In short what I need is:

  • For each name there should be one and only one file.

It will be an error if:

  • If there are multiple files for any name.
  • If each and every file is not present. If any file is missing, I want to Log that too.

The code is very long and verbose and does not do what is should. Need help.

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closed as off topic by Glenn Rogers, codesparkle, sepp2k Jan 2 '13 at 15:10

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If the code does not work, then this is a wrong site according to Q & A. I did not understand what exactly this code should be doing. [Mod note: removed unproductive bits of the comment] –  Leonid Jan 2 '13 at 3:03
Either 1) Split the code apart so you check one file at a time, or 2) Sort filePaths so you know what ..[0] etc should be –  Glenn Rogers Jan 2 '13 at 8:05
I'm sorry, but this site is for getting reviews of working code only, so this is off topic. –  sepp2k Jan 2 '13 at 15:10

1 Answer 1

up vote 2 down vote accepted

Seems as though you are complicating things by trying to find all log files at once. I would recommend writing a generic routine that searches for these files one at a time and then call it for the three different patterns separately.

Something like this.. (disclaimer: written in NotePad)

NOTE: Not exactly sure what FilterFiles does but since you can put "*.log" as a parameter I am assuming this parameter is a search pattern"

string validate_NewMasterFile = GetLogFileName("validate_NewMaster");
if (string.IsNullOrWhitespace(validate_NewMasterFile)
    return false;

string validate_Auth= GetLogFileName("validate_Auth");
if (string.IsNullOrWhitespace(validate_Auth)
    return false;

string transactionDatafeedLog = GetLogFileName("TransactionDatafeedLog");
if (string.IsNullOrWhitespace(transactionDatafeedLog )
    return false;

private bool GetLogFileName(string pattern)
    string[] filePaths = FilterFiles(ProgramSettings.DFLogPath, pattern + "*.log", DateTime.Now, "yyyy_MM_dd");

    // Expect only one file matching search pattern
    if (filePaths.Length != 1)
        LogThis("Too many files found. Number found is: " + filePaths.Length);
        return null;

    string fileName = new FileInfo(filePath[0])).Name;
    LogThis("File found: " + fileName, "r");

    return fileName;
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