C#

class Example
{
  public Example(int count){ vendor = new Vendor[count];}
  public Vendor[] vendor;
  //...
};

class Program
{
  public static void Main()
  {
    // read the vendorCount from configuration file
    Example example = new Example(vendorCount);
    //..
  }
}

private void Dig(string file)
        {
            DirFiles = Directory.GetFileSystemEntries(file);
            foreach (string subFile in DirFiles)
            {
                FileInfo SubFi = new FileInfo(subFile);
                if (!SubFi.Attributes.ToString().Contains("Directory"))
                    if (!listBox1.Items.Contains(subFile))
                        listBox1.Items.Add(subFile);
                else
                    Dig(subFile);
            }
        }

Christian Graus wrote:

One is the whole framework, which is free, and can be used to write apps, even without visual studio.

ptr2void wrote:

How can I write apps in .NET framework without Visual Studio??