How do I...search a .dox file in all the drive and all the directories

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I want to search a file in all drive and directories. Below is my code but when I try to SearchOption. TopDirectoryOnly it works but in AllDirectories it generate the exception (Hope there are some access denied directories.
Please help how to skip these directories or any other way …

C#

DriveInfo[] allDrive = DriveInfo.GetDrives();

foreach (DriveInfo d in allDrive)
{
    string b = d.Name.ToString();
     var filename = Directory.GetFiles(b, "*.doc*", SearchOption.AllDirectories);

        foreach (string a in filename)
        {
          listBox1.Items.Add(a.ToString());
          listBox1.Items.Add("Creation Time:"+System.IO.File.GetCreationTime(a.ToString()));
        }
}

Posted 20-Nov-15 23:27pm

Adi tyagi

Updated 20-Nov-15 23:41pm

Tomas Takac

v2

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Richard MacCutchan 21-Nov-15 5:32am

What exception, and where does it occur?

Adi tyagi 21-Nov-15 5:45am

exp is when i am using SearchOption.AllDirectories : An unhandled exception of type 'System.UnauthorizedAccessException' occurred in mscorlib.dll

Additional information: Access to the path 'C:\$RECYCLE.BIN\S-1-5-18' is denied.

Richard MacCutchan 21-Nov-15 6:13am

Then you need to catch the exception and ignore any directories that raise this exception.

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OriginalGriff · Accepted Answer · 2015-11-21T00:07:00

You can't use AllDirectories on the root folder without almost certainly getting access violations - unless you have full admin privileges, which is rather overkill for a simple file search!

Your only option is to use a recursive folder check inside a try...catch block, and check each folder on the drive individually, followed by its subfolders provided you have access to them.