private void button8_Click(object sender, EventArgs e)
 {
     string first = "Data Source=" + comboBox3.Text + ";";
     if (comboBox1.Text == "Да")
     {
         first = first + "AttachDbFilename=" + textBox2.Text + ";";
         if (comboBox2.Text != "Аутентификация Windows")
         {
             first = first + "Integrated Security=false;";
             first = first + "User ID=" + textBox4.Text + ";";
             first = first + "Password="******";";
         }
         else
         {
             first = first + "Integrated Security=true;";
         }
         first += "Connect Timeout=30;User Instance=True;";
     }
     else
     {
         first = first + "Database=" + comboBox4.Text + ";";
         if (comboBox2.Text != "Аутентификация Windows")
         {
             first = first + "Integrated Security=false;";
             first = first + "User ID=" + textBox4.Text + ";";
             first = first + "Password="******";";
         }
         else
         {
             first = first + "Integrated Security=true;";
         }
     }
     Connect_to_sql conn = new Connect_to_sql();
     try
     {
         conn.RunSQLScript(first);
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }
 }