Question

I use Unit of Work and Repository patterns in my software.
There is a dataGridView on form and it gets data from next way:

acceptedBonusesGrid.DataSource = _unitOfWork.DocumentRepository.GetDocumentsInfo();

GetDocumentsInfo is in DocumentRepository. GetDocumentsInfoes – is complex view with joins:

public IQueryable<GetDocumentsInfo> GetDocumentsInfo()
{
     return _context.GetDocumentsInfoes;
}

When user double-clicks on record, it’s form for editing this record appears. I send unit of work to form:

CorrectionAcceptedForm corrForm = new CorrectionAcceptedForm(_unitOfWork, docNum);

Form opens and link to unit of work is in use:

public CorrectionAcceptedForm(UnitOfWork unitOfWork, int docNum)
{
    InitializeComponent();
    _unitOfWork = unitOfWork;

    _documentData = _unitOfWork.DocumentRepository.GetById(docNum);

    AssignValues();
}

User makes changes in the record and saves changes:

private void SaveBill(int billId)
{
    if (ValidateChildren())
    {
        SaveSupplierAddress();
        Bill billData = _documentData.Bills.FirstOrDefault(bill => bill.BillId == billId);
        if (billData != null)
        {
            billData.Description = descriptionTextbox.Text;
            billData.Price = Convert.ToDecimal(priceTextbox.Text.Replace('.', ','));
            _unitOfWork.Save();
        }
    }
}

When this correction form closes, then datagrid on main form reloads:

acceptedBonusesGrid.DataSource = null;
acceptedBonusesGrid.Columns.Clear();
acceptedBonusesGrid.DataSource = _unitOfWork.DocumentRepository.GetDocumentsInfo();

But after reload – all rows in datagrid are old, that was before making changes.
What is the problem?

Answer 1

After 3 months I have discovered problem.
GetDocumentsInfo() has to be like this:

    public IQueryable<GetDocumentsInfo> GetDocumentsInfo()
    {
        _context.GetDocumentsInfoes.MergeOption = MergeOption.OverwriteChanges;
        return _context.GetDocumentsInfoes;
    }

Now my DataGrid updates when I make changes in child form.