SQL query with Group By and Having Clause in LINQ structure - linq

Question

how do I write this query in LINQ (c# EF6)?
Can someone please help me here - I am new to Entity Framework Structure - So bit hard for me to use different clauses
SELECT
sum(remainingamount) TotalSiteCreditAmount,
max(expirationutcdatetime) MaxExpiryDate
FROM
WholesaleCredits
WHERE
ExpirationUTCDateTime > Getdate()
GROUP BY
registeredcustomerid,
siteid
HAVING
registeredcustomerid = :registeredCustomerId
AND siteid = :siteId
Tried below thing as of now :
var data = context.WholesaleCredit
.Where(x => x.ExpirationUTCDateTime > DateTime.Now)
.GroupBy (x => x.RegisteredCustomerId)
Entity Used in code:
public partial class WholesaleCredits
{
public virtual int Id { get; set; }
public virtual decimal CreditAmount { get; set; }
public virtual decimal RemainingAmount { get; set; }
public virtual Site Site { get; set; }
public virtual DateTime GeneratedUTCDateTime { get; set; }
public virtual DateTime ExpirationUTCDateTime { get; set; }
public virtual int RegisteredCustomerId { get; set; }
}

Answer 1

You do not need HAVING here and Grouping should be provided by constant, because you have filter on grouping keys:
var data = context.WholesaleCredit
.Where(x => x.ExpirationUTCDateTime > DateTime.Now && x.RegisteredCustomerId == registeredCustomerId && x.Site.Id == siteid)
.GroupBy(x => 1)
.Select(g => new
{
TotalSiteCreditAmount = g.Sum(x => x.RemainingAmount),
MaxExpiryDate = g.Max(x => x.ExpirationUTCDateTime)
})
.First();