private void btnCreateCDChamber_Click(object sender, EventArgs e)
{
txtCDClassicalArtists.ReadOnly = false;
txtCDClassicalLabel.ReadOnly = false;
txtCDChamberInstrumentList.ReadOnly = false;
FormController.activateCDClassical(this);
FormController.activateCDChamber(this);
btnCreateBook.Enabled = false;
btnCreateBookCIS.Enabled = false;
btnCreateDVD.Enabled = false;
btnCreateCDOrchestra.Enabled = false;
btnSave.Enabled = true;
clickedBtn = "create_CD_chamber";
}