[英]Sum Columns from joined tables to get a calculated value using LINQ
In the below context I have joined two table based on some criteria.在下面的上下文中,我根据一些标准加入了两个表。 Now I need to
calculate total value
from the result of that joined table
.现在我需要根据
joined table
的结果calculate total value
。
[HttpGet("inner-join/{id}")]
[ProducesResponseType(StatusCodes.Status200OK)]
[ProducesResponseType(StatusCodes.Status500InternalServerError)]
public IActionResult GetReport(DateTime id)
{
try
{
IEnumerable<BTBPending> objBTBPendingList = _unitOfWork.BTBPending.GetAll(includeProperties: "ProformaInvoice,ContractList,SupplierList,CountryList,ItemList,BuyerList,StyleList,TradeTermList,ErpRemarksList,StatusList,LcNoList,UdAmendList");
IEnumerable<ProformaInvoice> objProformaInvoiceList = _unitOfWork.ProformaInvoice.GetAll(includeProperties: "ActualContract,ContractList,SupplierList,CountryList,ItemList,BuyerList,StyleList,TradeTermList");
var query = objBTBPendingList
.Where(x => x.LcOpenDate.Value.Year == id.Year && x.LcOpenDate.Value.Month == id.Month)
.Where(x => x.CountryListId == 26)
.Where(x => x.StatusListId == 12 || x.StatusListId == 13 || x.StatusListId == 14)
.Join(objProformaInvoiceList,
btbPending => btbPending.ContractListId,
pi => pi.ContractListId,
(btbPending, pi) => new
{
LcNo = btbPending.LcNoList,
Value = btbPending.PiValue,
ContractNo = pi.ContractList,
Buyer = pi.BuyerList,
PiNo = pi.PINo,
Supplier = pi.SupplierList,
Item = pi.ItemList
}).ToList();
return Ok(query);
}
catch (Exception ex)
{
return StatusCode(500, "Internal Server Error, Please Try Again Leter!");
}
}
After joining the these two table I need to return the sum
from the below Value = btbPending.PiValue
Column which I got after joining
the tables.加入这两个表后,我需要从下面的
Value = btbPending.PiValue
列返回sum
,这是我after joining
表后得到的。
.Join(objProformaInvoiceList,
btbPending => btbPending.ContractListId,
pi => pi.ContractListId,
(btbPending, pi) => new
{
LcNo = btbPending.LcNoList,
Value = btbPending.PiValue,
ContractNo = pi.ContractList,
Buyer = pi.BuyerList,
PiNo = pi.PINo,
Supplier = pi.SupplierList,
Item = pi.ItemList
}).ToList();
You can calculate the sum like this var sum = query.Select(c => c.Value).Sum();
您可以像这样计算总和
var sum = query.Select(c => c.Value).Sum();
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