private void InsertData_Click(object sender, EventArgs e)
        {

            var textboxes = new List<TextBox>() {
                textBox1,
                textBox2,
                textBox3,
                textBox4,
                textBox5,
                textBox6,
                textBox7,
                textBox8,
                textBox9,
                textBox10,
                textBox11,
                textBox12,
                textBox13,
                textBox14,
                textBox15,
                textBox16,
                textBox17,
                textBox18,
                textBox19,
                textBox20
            };
            var labels = new List<Label>() {
                Date2,
                Date4,
                Date6,
                Date8,
                Date10,
                Date12,
                Date14,
                Date16,
                Date18,
                Date20
            };

            SqlCeConnection connection = new SqlCeConnection(@"Data Source=C:UsersFluksikartoNDocumentsVisual Studio 2012ProjectsBuroFokiBuroFokiMainDB.sdf");
            connection.Open();

            for (int i = 0; i < 10 ; i = i++)
            {

                using (SqlCeCommand com = new SqlCeCommand("INSERT INTO TenOperations (EUR, Rate, BGN, Date) Values(@EUR, @Rate, @BGN, @Date)", connection))
                {


                    com.Parameters.AddWithValue("@EUR", textboxes[i+1].Text.ToString());
                    com.Parameters.AddWithValue("@Rate", EURbuy);
                    com.Parameters.AddWithValue("@BGN", textboxes[i].Text.ToString());
                    com.Parameters.AddWithValue("@Date", labels[i].Text.ToString());

                    com.ExecuteNonQuery();

                }
            }
            connection.Close();

        }