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There’s one challenge we rarely think about when writing file-handling code: how do we know where the file actually is? Josh H. inherited some C# code that puts a lot of thought into that. A lot.
longFileName = "x:\\isdn\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else if (!File.Exists(longFileName))
{
longFileName = "Y:\\isdnX\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "z:\\isdn\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "g:\\isdn\\a\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "g:\\isdn\\b\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "g:\\isdn\\c\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "g:\\isdn\\mbna\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "g:\\isdn\\sales\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "g:\\isdn\\w\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "g:\\isdn\\x\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "g:\\isdn\\y\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "g:\\isdn\\z\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "h:\\isdn\\a\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "h:\\isdn\\b\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "h:\\isdn\\c\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "h:\\isdn\\mbna\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "h:\\isdn\\sales\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "h:\\isdn\\w\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "h:\\isdn\\x\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "h:\\isdn\\y\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "h:\\isdn\\z\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "i:\\isdn\\a\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "i:\\isdn\\b\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "i:\\isdn\\c\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "i:\\isdn\\mbna\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "i:\\isdn\\sales\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "i:\\isdn\\w\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "i:\\isdn\\x\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "i:\\isdn\\y\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "i:\\isdn\\z\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "z:\\isdn\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "j:\\isdn\\a\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "j:\\isdn\\b\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "j:\\isdn\\c\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "j:\\isdn\\mbna\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "j:\\isdn\\sales\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "j:\\isdn\\w\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "j:\\isdn\\x\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "j:\\isdn\\y\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "j:\\isdn\\z\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "k:\\isdn\\a\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "k:\\isdn\\b\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "k:\\isdn\\c\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "k:\\isdn\\mbna\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "k:\\isdn\\sales\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "k:\\isdn\\w\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "k:\\isdn\\x\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "k:\\isdn\\y\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "k:\\isdn\\z\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "l:\\isdn\\b\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "l:\\isdn\\c\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "l:\\isdn\\mbna\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "l:\\isdn\\sales\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "l:\\isdn\\w\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "l:\\isdn\\x\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "l:\\isdn\\y\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "l:\\isdn\\z\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "m:\\isdn\\b\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "m:\\isdn\\c\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "m:\\isdn\\mbna\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "m:\\isdn\\sales\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "m:\\isdn\\w\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "m:\\isdn\\x\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "m:\\isdn\\y\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "m:\\isdn\\z\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "m:\\isdn\\a\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
else
{
longFileName = "l:\\isdn\\a\\" + fileName;
if (File.Exists(longFileName))
fileExistsFlag = true;
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
if (fileExistsFlag)
return longFileName;
else
return "NOTFOUND";
}
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