Total size of all files

Question

I'm writing a console application and i want it to display the total size of all the files in a certain directory an example of the output would be this

Files in: C:\Windows
Total files: 49
Total size of all files: 7121424 bytes

Here is what i currently have:

            if (menuOption == "3")
        {
            Console.Clear();
            Console.WriteLine("Files in C:\\windows");
            Console.WriteLine("");
            DirectoryInfo folderInfo = new DirectoryInfo("C:\\Windows");
            FileInfo[] files = folderInfo.GetFiles();

            for (numFiles = 0; numFiles < files.Length; numFiles++)
            { 
            }
            Console.Write("Total Files: {0}",numFiles);
        }

As you can see i have already made it so that it gets the total amount of files in C:\Windows but im unsure how to make it add all the file sizes together. Hope you guys can give me some insight, thanks.

If you need to include the contents of subfolders this might help: http://stackoverflow.com/a/5942656/397817 — Stephen Kennedy, Dec 21 '14 at 17:31

score 6 · Accepted Answer · answered Dec 21 '14 at 17:21

6

Use Length property of FileInfo

var totalSize = files.Sum(x => x.Length);

answered Dec 21 '14 at 17:21

Selman Genç

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logic is fine but what do we call => sign ? – varsha Dec 21 '14 at 17:47
1

@varsha it's used to create a [lambda expression](http://msdn.microsoft.com/en-us/library/bb397687.aspx) – Selman Genç Dec 21 '14 at 18:03

score 1 · Answer 2 · answered Dec 21 '14 at 17:23

1

By using the FileInfo.Length Property

long totalFileSize = 0;
for (numFiles = 0; numFiles < files.Length; numFiles++)
{
    totalFileSize += files[numFiles].Length;
}

answered Dec 21 '14 at 17:23

t3chb0t

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Total size of all files

2 Answers2