Check folder exists and create if not using C#

Question

2.09/5 (3 votes)

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Hi,

I have create a windows form with button.
I need to check whether the path (eg, c:\test\) can have folder are not. If not means create a new folder called 1_date stamp (eg 1_20120711).

If yes means create a auto increment folder (ie. 2_20120711).

Please help me.

Thanks,
Murugavel S

Posted 10-Jul-12 23:52pm

Murugavel Sadagopan

Updated 9-Dec-18 20:16pm

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3 solutions

Solution 1

you can used :-

Quote:
foreach(string path in args)
{
if(File.Exists(path))
{
// This path is a file
ProcessFile(path);
}
else if(Directory.Exists(path))
{
// This path is a directory
ProcessDirectory(path);
}
else
{
Console.WriteLine("{0} is not a valid file or directory.", path);
}
}
}

and you study more into following linq;-
http://msdn.microsoft.com/en-us/library/system.io.directory.exists.aspx[^]

Posted 10-Jul-12 23:56pm

rizwan muhammed khan gouri

Solution 3

use

System.IO.Directory.CreateDirectory

Directory.CreateDirectory(@"C:/test/" + foldername);

CreateDirectory already handles the check if the directory does not exists

Posted 9-Dec-18 20:16pm

PRINCE.P

Updated 9-Dec-18 20:17pm

v2

Comments

CHill60 10-Dec-18 8:48am

"CreateDirectory already handles the check if the directory does not exists" … No it does not, it just doesn't create a new folder, nor does it throw an exception.

If the folder already exists the OP wanted the name to increment. Which is why the check to see if it already exists is necessary to solve the OP's 6 year old problem

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Abhinav S · Accepted Answer · 2012-07-10T23:59:00

Solution 2

Try

string foldername = DateTime.Now.ToString();

C#

if (!Directory.Exists(@"C:/test/" + foldername)
       Directory.CreateDirectory(@"C:/test/" + foldername);

The folder name is based on date - however it is not in your format.

If a folder with the date already exists, create a new one with an incremented number,
Based on the code above, you can always try this on your own.

Posted 10-Jul-12 23:59pm

Abhinav S

Comments

Prasad_Kulkarni 11-Jul-12 6:00am

Yep. To the point +5!

Abhinav S 11-Jul-12 6:01am

Thanks Prasadd.

Shemeer NS 11-Jul-12 6:04am

5'ed..

Abhinav S 11-Jul-12 7:38am

Thanks.

Rahul Rajat Singh 11-Jul-12 6:22am

Perfect. +5.

Abhinav S 11-Jul-12 7:39am

Thanks Rahul.

Arjun Menon U.K 26-Mar-14 5:46am

Is there any function , like File.AppendText, that checks and creates a folder automatically