Delete Files in folder

System.IO.Directory.Delete(stringpath,bool )

That will delete the directory as well, not what was wanted. Try this:

using System.IO;

public int DeleteFromDirectory(string path)
{
    bool deleted = false;
    while (Directory.GetFiles(path).Count > 0)
    {
        File.Delete(Directory.GetFiles(path)[0]);
        deleted = true;
    }
    return deleted ? 1 : 0;
}

Swap the 1 and 0 - sorry!

Altenative, using exception handling:

using System.IO;
...
public int DeleteFiles(string dirPath)
{
      bool allDeleted = true;
      foreach (string filePath in Directory.GetFiles(dirPath))
      {
            try
            {
                  File.Delete(filePath);
            }
            catch
            {
                  allDeleted = false;
            }
      }
      return allDeleted? 0 : 1;
}