// method to update invoice items
public void updateItem(Guid _invoiceID, string _item, double _cost, Guid _itemID)
{
try
{
// respective datacontext object
InvoiceItemDataContext objItemDC = new InvoiceItemDataContext();
// get row to update
var upItem = objItemDC.brdhc_InvoiceItems.Single(i => i.ItemId == _itemID);
//updating values
upItem.ItemName = _item;
upItem.ItemCost = _cost;
//updating table
objItemDC.SubmitChanges();
//updating total
InvoicesDataContext objInvDC = new InvoicesDataContext();
//get invoice row
var inv = objInvDC.brdhc_Invoices.Single(i => i.InvoiceID == _invoiceID);
//calculating total
double total = getTotal(_invoiceID);
//update total
inv.TotalAmt = total;
objInvDC.SubmitChanges();
}
catch (Exception e)
{
clsCommon.saveError(e);
}
}
// to insert invoice items for the appropriate invoice ID
public void insertItem(Guid _invoiceID, string _item, double _itemCost)
{
InvoiceItemDataContext objItemDC = new InvoiceItemDataContext();
try
{
brdhc_InvoiceItem objInvItem = new brdhc_InvoiceItem();
objInvItem.InvoiceID = _invoiceID;
objInvItem.ItemName = _item;
objInvItem.ItemCost = _itemCost;
objItemDC.brdhc_InvoiceItems.InsertOnSubmit(objInvItem);
objItemDC.SubmitChanges();
}
catch (Exception e)
{
clsCommon.saveError(e);
}
}
//method to delete invoice
public void deleteInvoice(Guid invID)
{
try
{
// delete all invoice items with this invID
// respective datacontext object
InvoiceItemDataContext objItemDC = new InvoiceItemDataContext();
//get rows to delete
var delItem = from i in objItemDC.brdhc_InvoiceItems where (i.InvoiceID == invID) select i;
// delete from table
objItemDC.brdhc_InvoiceItems.DeleteAllOnSubmit(delItem);
//commit delete
objItemDC.SubmitChanges();
// delete invoice
InvoicesDataContext objInvDC = new InvoicesDataContext();
//get row to delete
var delInv = from i in objInvDC.brdhc_Invoices where (i.InvoiceID == invID) select i;
//delete from table
objInvDC.brdhc_Invoices.DeleteAllOnSubmit(delInv);
//commit delete
objInvDC.SubmitChanges();
}
catch (Exception e)
{
clsCommon.saveError(e);
}
}
// method to get all invoice items by invoice id
public List<brdhc_InvoiceItem> getItemsByInvoiceID(Guid invoiceID)
{
InvoiceItemDataContext objItemDC = new InvoiceItemDataContext();
var allItems = from x in objItemDC.brdhc_InvoiceItems where x.InvoiceID == invoiceID orderby x.ItemId select x;
return allItems.ToList();
}
// method to get all invoice items
public IQueryable<brdhc_InvoiceItem> getItems()
{
InvoiceItemDataContext objItemDC = new InvoiceItemDataContext();
var allItems = from x in objItemDC.brdhc_InvoiceItems orderby x.ItemId select x;
return allItems;
}
//method to delete invoice item
public void deleteItem(Guid _itemID, Guid _invoiceID)
{
try
{
// respective datacontext object
InvoiceItemDataContext objItemDC = new InvoiceItemDataContext();
//get row to delete
var delItem = from i in objItemDC.brdhc_InvoiceItems where (i.ItemId == _itemID) select i;
// delete from table
objItemDC.brdhc_InvoiceItems.DeleteAllOnSubmit(delItem);
//commit delete
objItemDC.SubmitChanges();
//updating total
InvoicesDataContext objInvDC = new InvoicesDataContext();
//get invoice row
var inv = objInvDC.brdhc_Invoices.Single(i => i.InvoiceID == _invoiceID);
//calculating total
double total = getTotal(_invoiceID);
//update total
inv.TotalAmt = total;
objInvDC.SubmitChanges();
}
catch (Exception e)
{
clsCommon.saveError(e);
}
}
