Negate a string in C#

Question

Im writing a simple folder watcher program, I would like to ignore a temp.temp file that gets copied into the folder when a scan is made, so the program will detect anything placed in the folder and ignore the temp.temp file. At the moment I have got the program detecting IMG files to get around the problem.

if(e.FullPath.Contains("IMG"))            
{ 
    MessageBox.Show("You have a Collection Form: " + e.Name);
    Process.Start("explorer.exe", e.FullPath);
}

Is there some reason `if(e.FullPath.Contains("temp.temp"))` wouldn't be an appropriate test, here? — Frosty840, Jun 17 '11 at 11:03
What do you mean by "negate" a string? Your question is very unclear. — Jon Skeet, Jun 17 '11 at 11:03
I think he means he wants to ignore that particular file. His current solution seems valid to me. — , Jun 17 '11 at 11:04
I need to ignore temp.temp and detect any file that is placed in the folder. — Matt, Jun 17 '11 at 11:06
Well you want to ignore a temp.temp file and surprising you have the name, whatz stopping you to check the same in `FullPath` ? — V4Vendetta, Jun 17 '11 at 11:07

foxy · Answer 1 · 2011-06-17T11:55:30.917

7

If e is of type FileInfo, then you can use

if(e.FullPath.Contains("IMG") && e.Name.Equals("temp.temp", StringComparison.CurrentCultureIgnoreCase))
{ 
    MessageBox.Show("You have a Collection Form: " + e.Name);
    Process.Start("explorer.exe", e.FullPath);
}

edited Jun 17 '11 at 11:55

answered Jun 17 '11 at 11:08

foxy

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score 2 · Accepted Answer · answered Jun 17 '11 at 11:08

2

Try : If(!e.FullPath.EndsWith("temp.temp"))

answered Jun 17 '11 at 11:08

Piotr Auguscik

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That'll also catch `babytemp.temp`, which as I understand, should not be ignored. – foxy Jun 17 '11 at 11:09
Yeah ure right it should be changed to equality check if its exact file name that should be ignored – Piotr Auguscik Jun 17 '11 at 11:27

score 0 · Answer 3 · answered Jun 17 '11 at 11:08

0

So if by 'negate' you mean 'ignore', this should work:

if(Path.GetFileName(e.FullPath) != "temp.temp")            
{ 
    MessageBox.Show("You have a Collection Form: " + e.Name);
    Process.Start("explorer.exe", e.FullPath);
}

answered Jun 17 '11 at 11:08

Iain Ward

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score 0 · Answer 4 · answered Jun 17 '11 at 11:19

0

If you want to just ignore "temp.temp" how about an early return?

if (e.Name.Equals("temp.temp", StringComparison.CurrentCultureIgnoreCase))
    return;

answered Jun 17 '11 at 11:19

Matthew Whited

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score 0 · Answer 5 · answered Jun 17 '11 at 11:21

0

If you're using a FileSystemWatcher use the constructor described here http://msdn.microsoft.com/en-us/library/0b30akzf.aspx to filter for files you want rather than negate the ones you don't.

answered Jun 17 '11 at 11:21

Mike Miller

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Negate a string in C#

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