how to count files in directory

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how to count files in directory but only files that larger then 200kb

i have this but only count all files

C#

private void button1_Click(object sender, EventArgs e)
       {

 int fileCount = Directory.GetFiles(@"C:").Length;

 label1.Text = fileCount.ToString();
 }
    
    }
}

Posted 14-Jun-15 12:01pm

Member 11383935

Updated 14-Jun-15 12:14pm

PIEBALDconsult

v2

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Comments

[no name] 14-Jun-15 20:35pm

Have you tried Google? https://www.google.com.au/?gws_rd=ssl#q=get+size+file+c%23

3 solutions

Solution 1

Hi,

DirectoryInfo.GetFiles() will return you FileInfo[] which is list of all files in given folder path. To get length (size) of file you have to use FileInfo.Length property which returns you length in bytes.

Here in your case you have to divide file length/1024 to get size in Kb.

Try with below code -

DirectoryInfo dir = new DirectoryInfo("folder path here");
//divide Length/1024 to convert it in kb.
var files = dir.GetFiles().Where(m => (m.Length / 1024) > 200);

Now, files will hold list of files from your given folder having size greater than 200Kb.

Hope this helps.

Posted 14-Jun-15 16:44pm

User 4180254

Comments

[no name] 14-Jun-15 22:46pm

Also further to get count of file you can use files.Count()

Member 11383935 15-Jun-15 3:25am

No error but in label1 ( label1.Text = files.ToString(); ) i get this
System.Linq.Enumerable+WhereArrayIterator`1[System.IO.FileInfo]
what im doing wrong?

[no name] 15-Jun-15 7:05am

Here ffiles is IEnumerable object, a list.

To get only count use files.count(), or to accesscontents you have to iterate it as a List

F-ES Sitecore 15-Jun-15 8:12am

What do you expect to see when you use ToString on a List of complex items? That .net is going to magically know what you want to see? If you use ToString on a class that does not implement a specific ToString implementation then you simply get the type name back which is what you're seeing. You need to loop through each file and get the data from it you need, ie the filename, the whole path, whatever, and show that data in the label.

Solution 3

did you mean something like this

private void button1_Click(object sender, EventArgs e)
{ int fileCount = Directory.GetFiles(@"C:").Where(m => (m.Length / 1024) > 200).Count();
label1.Text = fileCount.ToString();

Posted 15-Jun-15 8:12am

Member 11383935

Comments

[no name] 15-Jun-15 14:33pm

Yes, if you only need file count to assign to label1.

Member 11383935 15-Jun-15 15:10pm

i thinks that something is wrong with mathematics
it always return null

[no name] 15-Jun-15 15:39pm

Well the code you put here will not work. Directory.GetFiles will return you string[] means list of file names not actual file objects.

If you want to access file object to get length here you have to use DirectoryInfo.GetFiles which return you list of files. Check with solution 2 I posted it still works for me.

DirectoryInfo dir = new DirectoryInfo("folder path here");
int fileCount = dir.GetFiles().Where(m => (m.Length / 1024) > 200).Count();
label1.Text = fileCount.ToString();

Member 11383935 15-Jun-15 16:01pm

this work perfectly, thanks

[no name] 15-Jun-15 16:02pm

ok

Member 11383935 16-Jun-15 15:05pm

Is it possible for this to work with net framework 2.0 ?

[no name] 17-Jun-15 8:05am

Yes, it should. DirectoryInfo.GetFiles is Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

Do you face any issues?

Member 11383935 17-Jun-15 12:51pm

It will not work on 2.0, because of LINQ, here is solution
http://www.codeproject.com/Questions/1001745/count-files-on-net-framework

[no name] 17-Jun-15 16:03pm

Yes, I have just checked for DirectoryInfo.GetFiles compatibility with .net 2.0 so replied your message. Linq will not be there as it released with 3+ version.

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User 4180254 · Accepted Answer · 2015-06-15T02:01:00

Solution 2

if you need only count of files, not the actual list use below code as -

C#

int fileCount = dir.GetFiles().Where(m => (m.Length / 1024) > 200).Count();

Posted 15-Jun-15 2:01am

User 4180254