// The selected 
form.gridControlChosenAntibiotics.SetDataSource(vm.Antibiotiks);

// Initializing
form.gridControlAntibiotics.SetDataSource(antibiotics);

// ADDING
form.gridViewAntibiotics.RowCellClick += (s, e) =>
{
    if (form.Locker.IsLocked)
    {
        Mess.boxInf("Формата не е в режим на редакция.");
        return;
    }

    var row = form.gridViewAntibiotics.GetRow(e.RowHandle) as MicroAntibiotik;
    if (row != null && e.Column == form.col_Choose)
    {
        AddAntibiotic(row);
    }
};

// REMOVING
form.gridViewChosenAntibiotics.RowCellClick += (s, e) =>
{
    if (form.Locker.IsLocked)
    {
        Mess.boxInf("Формата не е в режим на редакция.");
        return;
    }

    var row = form.gridViewChosenAntibiotics.GetRow(e.RowHandle) as MicroAntibiotik;
    if (row != null && e.Column == form.col_Remove)
    {
        RemoveAntibiotic(row);
    }
};

// METHODS
void AddAntibiotic(MicroAntibiotik antibiotic)
{
    antibiotics.Remove(antibiotic);
    vm.Antibiotiks.Insert(0, antibiotic);
    RefreshAntibioticGrids();
}

void RemoveAntibiotic(MicroAntibiotik antibiotic)
{
    antibiotics.Add(antibiotic);
    vm.Antibiotiks.Remove(antibiotic);
    RefreshAntibioticGrids();
}

void RefreshAntibioticGrids()
{
    int topRow = form.gridViewAntibiotics.TopRowIndex;
    int focusedRowHandle = form.gridViewAntibiotics.FocusedRowHandle;
    form.gridViewAntibiotics.RefreshData();
    form.gridViewAntibiotics.TopRowIndex = topRow;
    form.gridViewAntibiotics.FocusedRowHandle = focusedRowHandle;

    topRow = form.gridViewChosenAntibiotics.TopRowIndex;
    focusedRowHandle = form.gridViewChosenAntibiotics.FocusedRowHandle;
    form.gridViewChosenAntibiotics.RefreshData();
    form.gridViewChosenAntibiotics.TopRowIndex = topRow;
    form.gridViewChosenAntibiotics.FocusedRowHandle = focusedRowHandle;
}