Boolean check if any of the drives contain a specific drivetype

Question

How do I write up a check that says something like this... If ANY (or if at least one) of the drive types are CDRom, then true/continue... else false (throw an error)?

Right now, I have it throwing an error for each drive check that does not pass the CDRom requirement. I think I need to use a LINQ query with Any() but I keep getting errors. I'm probably not writing it correctly.

My plan is to have a error message thrown if:

-No CD is entered

-No CD-Rom drive on computer

-CD entered is blank

-CD entered does not contain specific file needed

Here's what I have so far that doesn't work in the way I want it to:

DriveInfo[] allDrives = DriveInfo.GetDrives();

            foreach (DriveInfo d in allDrives)
            {
                Console.WriteLine("Drive {0}", d.Name);
                Console.WriteLine("  File type: {0}", d.DriveType);

                if (d.IsReady == true && d.DriveType == DriveType.CDRom)
                {
                    DirectoryInfo di = new DirectoryInfo(d.RootDirectory.Name);

                    var file = di.GetFiles("*.csv", SearchOption.AllDirectories).FirstOrDefault();

                    if (file == null)
                    {

                        errorwindow.Message = LanguageResources.Resource.File_Not_Found;
                        dialogService.ShowDialog(LanguageResources.Resource.Error, errorWindow);
                    }
                    else
                    {
                        foreach (FileInfo info in di.GetFiles("*.csv", SearchOption.AllDirectories))
                        {
                            Debug.Print(info.FullName);
                            ImportCSV(info.FullName);
                            break;      // only looking for the first one
                        }
                    }
                }
                else
                {
                    errorwindow.Message = LanguageResources.Resource.CDRom_Error;
                    dialogService.ShowDialog(LanguageResources.Resource.Error, errorWindow);
                }
            }

The problem currently is the loop is set up to set each drive individually first. After one drive check that is not a CD-Rom, it throws an error message and does this for each drive. I just want one unifying error message.

Answer 1

How do I write up a check that says something like this... If ANY (or if at least one) of the drive types are CDRom, then true/continue... else false (throw an error)?

You could try something like this:

// Get all the drives.
DriveInfo[] allDrives = DriveInfo.GetDrives();

// Check if any cdRom exists in the drives.
var cdRomExists = allDrives.Any(drive=>drive.DriveType==DriveType.CDRom);

// If at least one cd rom exists. 
if(cdRomExists)
{
    // Get all the cd roms.
    var cdRoms = allDrives.Where(drive=>drive.DriveType==DriveType.CDRom);

    // Loop through the cd roms collection.
    foreach(var cdRom in cdRoms)
    {
        // Check if a cd is in the cdRom.
        if(cdRom.IsReady)
        {

        }
        else // the cdRom is empty.
        {

        }
    }
}
else // There isn't any cd rom.
{

}