MKEEITTOPSUPERMENT2.mkeitsuperment2 1.0.0

string letters = "QWERTYUIOOPASDFGHJKLZXCVBNM";
string digits = "0123456789";
char[] articul = new char[8];
articul[0] = letters[Random.Next(letters.Length)];
articul[1] = digits[Random.Next(digits.Length)];
articul[2] = digits[Random.Next(digits.Length)];
articul[3] = digits[Random.Next(digits.Length)];
articul[4] = letters[Random.Next(letters.Length)];
articul[5] = letters[Random.Next(letters.Length)];
articul[6] = digits[Random.Next(digits.Length)];
articul[7] = digits[Random.Next(digits.Length)];
string res = new string(articul);

private void pBPhoto_Click(object sender, EventArgs e)
{
   if (oFDPicture.ShowDialog() == DialogResult.OK)
   {
       fileNameToCopy = oFDPicture.FileName;
       fileName = oFDPicture.SafeFileName;
       pBPhoto.ImageLocation = fileNameToCopy;
       photochanged = true;
   }
}

private void btnAdd_Click(object sender, EventArgs e)
{
   if (fileName != null)
   {
       try
       {
           int counter = 0;
           string dest = Application.StartupPath + "\\photos\\" + fileName;
           string nameNoExtension = Path.GetFileNameWithoutExtension(fileName);
           string extension = Path.GetExtension(fileName);
           while (File.Exists(dest))
           {
               string newFileName = nameNoExtension + counter + extension;
               dest = Path.Combine(Application.StartupPath + "\\photos\\", newFileName);
               counter++;
           }
           File.Copy(fileNameToCopy, dest);
       }
       catch (Exception ex)
       {
           MessageBox.Show("Ошибка при копировании фото!",
               "Ошибка",
               MessageBoxButtons.OK,
               MessageBoxIcon.Error);
           return;
       }
   }
}

private void btnEdit_Click(object sender, EventArgs e)
{
   if (photochanged == true)
   {
       try
       {
           if (File.Exists(Application.StartupPath + "\\photos\\" + oldFileName))
           {
               File.Delete(Application.StartupPath + "\\photos\\" + oldFileName);
           }
           int counter = 0;
           string dest = Application.StartupPath + "\\photos\\" + fileName;
           string nameNoExtension = Path.GetFileNameWithoutExtension(fileName);
           string extension = Path.GetExtension(fileName);
           while (File.Exists(dest))
           {
               string newFileName = nameNoExtension + counter + extension;
               dest = Path.Combine(Application.StartupPath + "\\photos\\", newFileName);
               counter++;
           }
           File.Copy(fileNameToCopy, dest);
       }
       catch (Exception ex)
       {
           MessageBox.Show("Ошибка при копировании фото!" + ex.ToString(),
               "Ошибка",
               MessageBoxButtons.OK,
               MessageBoxIcon.Error);
           return;
       }
   }
}