CODEWITHSUNDEEP
c#.net
eugeneK
eugeneK

Reputation: 11146

How to delete file of certain extension?

I have an application that should unzip and install some other application, i get new Zip file with installation image via network and then should unzip it and install. All file except the part that Zip file comes with different name each time because of version change and all my C:\ has a lot of .zip files with different versions. Msi file is not overwritten by Zip i'm using but i'm more than fine with just deleting it prior to unzipping.

I want to delete all .msi and .zip files on C:. How can i do that via C#?

thanks...

Upvotes: 32

Views: 47665

Answers (7)

user5583316
user5583316

Reputation: 

Directory.GetFiles(@"C:\", "*.pdf").ToList().ForEach(f => File.Delete(f));

Upvotes: 2

masterchris_99
masterchris_99

Reputation: 2733

foreach (string file in Directory.GetFiles("C:\\myDir", "*.zip").Where(item => item.EndsWith(".zip")))
{
    File.Delete(file);
}

you can do it with more pattern by changing the GetFiles Algo

public FileInfo[] GetFiles(DirectoryInfo dir, string searchPatterns, params char[] separator)
{
   ArrayList files = new ArrayList();
   string[] patterns = searchPatterns.Split(separator);
   foreach (string pattern in patterns)
   {
      if (pattern.Length != 0)
      {
         files.AddRange(dir.GetFiles(pattern).Where(item => item.EndsWith(pattern));
      }
   }
   return (FileInfo[])files.ToArray(typeof(FileInfo));
}

Upvotes: 17

Marco
Marco

Reputation: 57593

You could try something like this:

DirectoryInfo di = new DirectoryInfo(@"C:\");
FileInfo[] files = di.GetFiles("*.msi")
                     .Where(p => p.Extension == ".msi").ToArray();
foreach (FileInfo file in files)
    try
    {
        file.Attributes = FileAttributes.Normal;
        File.Delete(file.FullName);
    }
    catch { }

Note that I first try to set attributes to "normal", because File.Delete() fails if file is read-only...
Note the use of GetFiles(): see this link for details.

EDITED:
If you need to get more than one extension you could use this:

public List<FileInfo> GetFiles(string path, params string[] extensions)
{
    List<FileInfo> list = new List<FileInfo>();
    foreach (string ext in extensions)
        list.AddRange(new DirectoryInfo(path).GetFiles("*" + ext).Where(p =>
              p.Extension.Equals(ext,StringComparison.CurrentCultureIgnoreCase))
              .ToArray());
    return list;
}

so you can change part of my answer to

List<FileInfo> files = GetFiles(@"C:\", ".msi", ".zip");

Upvotes: 65

csblo
csblo

Reputation: 1631

You can simply do this :

Directory.EnumerateFiles("C:\\MyDirectory", "*.ext").ToList().ForEach(x => File.Delete(x));

Don't forget to include System.IO

Upvotes: 6

Damith
Damith

Reputation: 63105

var files = Directory.GetFiles(@"C:\", "*.*", SearchOption.AllDirectories)
            .Where(s => s.EndsWith(".msi") || s.EndsWith(".zip"));

foreach (string file in files)
{
   File.Delete(file);
}

Upvotes: 4

DeveloperX
DeveloperX

Reputation: 4683

You can list all file with specific extension and delete all

    var list = System.IO.Directory.GetFiles("*.zip");
    foreach (var item in list)
    {
        System.IO.File.Delete(item);
    }

Upvotes: 1

paulsm4
paulsm4

Reputation: 121881

The C# System.IO.Directory object lets you find files (e.g. *.zip) and System.IO.File lets you delete them:

http://msdn.microsoft.com/en-us/library/wz42302f.aspx

http://msdn.microsoft.com/en-us/library/system.io.file.aspx

Additionally, the .Net 3.5++ file "ZipPackage" might let you do some/all of what you want directly inside the .zip file (without necessarily extracting anything first):

http://msdn.microsoft.com/en-us/library/system.io.packaging.zippackage%28v=VS.90%29.aspx

Upvotes: 2

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