handling file not found exception? - c#-4.0

Question

I made this code to empty some files that I regularly delete, such as temp files in Windows. Several friends may wish to use the same application and I am working on the best way to handle the file not found exception.
How can this best be handled for use by multiple users?
public void Deletefiles()
{
try
{
string[] DirectoryList = Directory.GetDirectories("C:\\Users\\user\\Desktop\\1");
string[] FileList = Directory.GetFiles("C:\\Users\\user\\Desktop\\1");
foreach (string x in DirectoryList)
{
Directory.Delete(x, true);
FoldersCounter++;
}
foreach (string y in FileList)
{
File.Delete(y);
FilesCounter++;
}
MessageBox.Show("Done...\nFiles deleted - " + FileList.Length + "\nDirectories deleted - " + DirectoryList.Length + "\n" + FilesCounter + "\n", "message", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
catch (Exception z)
{
if (z.Message.Contains("NotFound"))
{
MessageBox.Show("File Not Found");
}
else
{
throw (z);
}
//throw new FileNotFoundException();
}
}

Answer 1

Modifying you code as little as possible, you could simply wrap your Delete calls in a try/catch:
foreach (string x in DirectoryList)
{
try {
Directory.Delete(x, true);
}
catch (DirectoryNotFoundException e)
{
// do something, or not...
}
FoldersCounter++;
}
foreach (string y in FileList)
{
try
{
File.Delete(y);
}
catch (FileNotFoundException e)
{
// do something, or not...
}
FilesCounter++;
}
Remove the top level try/catch and just let the foreach statements cycle through -- trying and catching any exceptions as they come.
You don't necessarily need to alert the user that the file wasn't found. It is there it is going to be deleted, so the fact that it isn't there doesn't really effect the outcome of the program.
This isn't the most resource friendly method, but it is a simple enough application to not cause an issue.