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Feb 18th, 2019
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  1. private void BtnDodaj_Click(object sender, EventArgs e)//Dodaj means Add in Croatian
  2. {
  3. if (DTPVracanje.Checked == false)//DTPvracanje is a datetimepicker
  4. {
  5. for (int Row = 0; Row < DataGridView.Rows.Count; Row++)
  6. {
  7. if (DataGridView.Rows[Row].Cells[1].Value.ToString() == CboSifraKnjige.Text &&
  8. DataGridView.Rows[Row].Cells[5].Value.Equals(Convert.IsDBNull(DTPVracanje.Value)))//column 5 contains DBnull if DTPVracanje is unchecked
  9. {
  10. MessageBox.Show("Knjiga je vani");//Book is out in Croatian[
  11. }
  12. else
  13. {
  14. Dodaj();
  15. }
  16. }
  17. }
  18. }
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