Delete specific files by extension in a directory

Question

5.00/5 (1 vote)

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here so far i know how to delete all files in my dir :

C#

string[] filePaths = Directory.GetFiles(@"c:\Directory\");
foreach (string filePath in filePaths)
File.Delete(filePath);

but how to delete file with extension .txt
so i want to delete all txt files in my dir?

Posted 28-May-13 2:52am

Gun Gun Febrianza

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Comments

ZurdoDev 28-May-13 8:54am

In your foreach just look at the extension on the filePath.

Gun Gun Febrianza 28-May-13 9:14am

like this code sir?

string[] dirs = Directory.GetFiles(@"c:\", "*.txt");

3 solutions

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Pheonyx · Accepted Answer · 2013-05-28T02:58:00

Solution 1

There various was,

1) as ryanb31 said, go through the foreach loop and check for the extension and delete if it has it.
2) user the GetFiles overload that accepts a search pattern to filter by *.txt files

http://msdn.microsoft.com/en-us/library/wz42302f(v=vs.90).aspx[^]

Then all you get back from the getfiles method should be the txt tiles.

Posted 28-May-13 2:58am

Pheonyx

Comments

Gun Gun Febrianza 28-May-13 9:14am

like this code sir?

string[] dirs = Directory.GetFiles(@"c:\", "*.txt");

Pheonyx 28-May-13 9:15am

That should do the job.

Gun Gun Febrianza 28-May-13 9:20am

100% work thank you.. :)

Prasad Khandekar · Accepted Answer · 2013-05-28T03:00:00

Solution 2

Hello,

Change your code as follows

C#

string[] filePaths = Directory.GetFiles(@"c:\Directory\", "*.txt");
foreach (string filePath in filePaths) {
    File.Delete(filePath);
}

More help can be found here on MSDN.

Regards,

Posted 28-May-13 3:00am

Prasad Khandekar

Comments

Gun Gun Febrianza 28-May-13 9:20am

thankyou sir :)
i got it..

Basmeh Awad · Accepted Answer · 2013-05-28T03:10:00

Solution 3

try this

C#

string[] Arr = null;
           Arr = Directory.GetFiles("D:\\Your Directory");
           foreach (string item in Arr)
           {
               if (item.Substring(item.LastIndexOf("."), item.Length - item.LastIndexOf(".")) == ".txt")
               {
                   File.Delete(item);
               }
           }

Posted 28-May-13 3:10am

Basmeh Awad

v2

Comments

Gun Gun Febrianza 28-May-13 9:20am

thank you i get new knowledge by learning substring :)

Basmeh Awad 28-May-13 9:24am

glad to help you..
Welcome:-)

Basmeh Awad 28-May-13 9:24am

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