protected override async Task OnInitializedAsync()
{
PaymentTerms = (await PaymentTermDataService.GetAll()).ToArray();
Clients = (await ClientDataService.GetAll()).ToArray();
ProductsData = (await ProductDataService.GetAll()).ToArray();
Lines = new List <InvoiceLine> {
InvoiceLinesRef.GetEmptyLine()
};
NumberSequences = (await NumberSequenceDataService.GetAll()).ToArray();
await IsEditingInvoice();
}