Get last record in linq c#

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WebAug 10, 2010 · Usage: List l = new List {4, 6, 3, 6, 2, 5, 7}; List lastElements = l.TakeLast (3).ToList (); It works by using a ring buffer of size N to store the elements as it sees them, overwriting old elements with new ones. When the end of the enumerable is reached the ring buffer contains the last N elements. Share. WebSep 22, 2008 · When I enter an object into the DB with Linq-to-SQL can I get the id that I just inserted without making another db call? I am assuming this is pretty easy, I just don't know how. ... c#.net; linq; linq-to-sql; ... Linq get last ID inserted. 1. F# obtaining ID after SubmitChanges (using SQLDataConnection type provider) ...

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Web32 minutes ago · Get table without DbSet. Can I get table without DbSet ? I need to record table from Stored Procedure to an object or can I record via view ? I use EF Core 6 and _context.DataBase.SqlQuery ("...").ToList - not fount method "SqlQuery". Know someone who can answer? WebDec 7, 2010 · Solution 1 Just call Last () [ ^ ]: var lastItem = yourQuery.Last () If you think there is a chance your table may be empty, use LastOrDefault () [ ^] instead. This will return null if nothing is found. var lastItem = yourQuery.LastOrDefault (); if (lastItem == null ) { //Table was empty. } on the jobs training from high school

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WebApr 5, 2012 · 1 Answer Sorted by: 48 This should work: db.tblStoreItemPrices .Where (c => c.ItemID == ID) .GroupBy (c => c.CurrencyID) .Select (g => g.OrderByDescending (c => c.Date).First ()) .Select (c => new { c.CurrencyID, c.Amount }); Explanation: Select rows for the specific ItemID Group by CurrencyID WebAug 29, 2016 · test.Take (test.Count-2); //If records are already sorted in the order you like, or test.Where (t=>t.ID <= test.Max (m=>m.ID)-2); //Where ID is a unique key and the list may not be sorted by id //This will return the lowest 8 ID even if the list is sorted by address or whatever. Share Improve this answer Follow edited Aug 29, 2016 at 19:43 WebLINQ to Entities: Get more recent date from each group. UWP setting a ComboBox's SelectedItem when the ItemSource is LINQ. Analyzing queries by Entity Framework. Order by repeated times LINQ ASP.NET MVC. Linq query to get person visited zones of … on the job software

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WebI want to select records and GroupBy contactId. I used this LINQ extension method statement: Mains.GroupBy (l => l.ContactID) .Select (g => g.FirstOrDefault ()) .ToList () It returns record 1 and 4. How can I use LINQ to get the ContactID with the highest ID? (i.e. return 3 and 6) c# linq Share Improve this question Follow Web6 Answers. Sorted by: 248. If you just want the last date for each account, you'd use this: var q = from n in table group n by n.AccountId into g select new {AccountId = g.Key, Date = g.Max (t=>t.Date)}; If you want the whole record: var q = from n in table group n by n.AccountId into g select g.OrderByDescending (t=>t.Date).FirstOrDefault (); on the job teaching rcpWebMar 9, 2016 · I want to display last 3 months sales records.Based on current month will show it's previous records in linq to sql.Please tell me the query for that. If current month is june then will show apr,may,june records. id name no.ofsales desc datevalue 1 test 12 test desc 2013-10-12 2 test1 16 desc message 2013-09-14 Give me idea on this query. c# linq on the job teaching

"WebFeb 18, 2024 · var result = ( from p in List group p by p.Value into g select new { GroupId = g.OrderByDescending (x=>x.Id).FirstOrDefault ().GroupId, ValueA = g.OrderByDescending (x => x.Id).FirstOrDefault ().ValueA } ).ToList (); It works for me... So you can try. Share Follow edited Dec 27, 2024 at 18:33 zx485 27.9k 28 54 59 answered Dec 27, 2024 at 18:07 " - Get last record in linq c#

Get last record in linq c#

c# - Linq to select latest records - Stack Overflow

WebJul 1, 2014 · You should sort your records based on the ID instead of ScheduleId and also filter the records that has the empty Filename: objContext.SchedulesAndFiles .Where(x => x.ScheduleId == scheduleId && x.Filename != "") .OrderByDescending(x => x.ID) … WebAug 24, 2024 · You only want the first one when ordered by the Id in descending order. [HttpGet] public int GetStudentId () { var latestStudentRecord = _context.StudentModel .OrderByDescending (a => a.Id) .First (); // return only the Id property of the latest record return latestStudentRecord.Id; }

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Webvar res = (from element in list) .OrderBy (x => x.F2) .GroupBy (x => x.F1) .Select () Now if you want to do something more complex like take the same grouping result but take the first element of F2 and the last element of F3 or something more custom you can do it by studing the code bellow WebI have a LINQ query to find records for the last 7 days which works fine No, you have a query that returns the calories burned more than 7 days ago (ie 8, 9, 10, etc). The way you structured your query, the correct way would be w.Date >= DateTime.Now.AddDays (-n) to get the last n days. Share Improve this answer Follow

WebNov 19, 2014 · var QueryDeatils = from M in db.Tr_Mealcode where M.codeDate.Date >= DateTime.Now.Date.AddDays (-7) group M by M.merchantID into G select new { MerchantId=G.Select (m=>m.merchantID) }; After trying this I got an exception The specified type member 'Date' is not supported in LINQ to Entities.

WebJul 26, 2016 · 1 I have list as follows static List CurrentMessage = new List (); Dynamically, values assigned to this list for example: CurrentMessage.Add (new MessageDetail { UserName = 123,GroupName = somegrp, Message = somemsg }); Here, I want to take last 5 or so records. WebMy Linq query returns one record for each company, but it doesn't return the most recent ones: var query = from p in db.Payments where p.Status == false && DateTime.Compare (DateTime.Now, p.NextPaymentDate.Value) == 1 group p by p.CompanyID into op select op.OrderByDescending (nd => nd.NextPaymentDate.Value).FirstOrDefault ();

WebApr 8, 2024 · Check if a string within a list contains a specific string with Linq. Proper LINQ where clauses. I'm using the version 6.0.10 of Entity Framework and SQL Server provider. But it's seems that these formulas cannot be translated, throwing an exception with the following message: The LINQ expression 'name => EntityShaperExpression: …

WebAug 14, 2012 · Have a look at the list of Supported and Unsupported LINQ Methods. Last () is not supported, but First () is, so you can just go on and reverse your ordering and use First () instead of Last (). mf => mf.AuditItems.OrderByDescending (ai => ai.DateOfAction).First ().Step == 1); Share Improve this answer Follow edited Aug 14, … ion-usd cryptoWeb2 days ago · In my ASP.NET Core web application, I have a client sided list of Roles objects. Each of those objects contains three string properties and a string list containing the role names. I need to query entities of type Notification from a SQL Server database using EF Core and filter based on those roles. To do this, I need to check if the list ... ion usb turntable ttusb manualWebHow to use MS-XCEP and MS-WSTEP in .NET or JavaScript to get a certificate from AD CS? Display treeviewitem as grid rows in wpf; Output logs to Xunit using Serilog Static Logger in C#; Getting "error": "unsupported_grant_type" when trying to get a JWT by calling an OWIN OAuth secured Web Api via Postman; How to select last record in a LINQ ... on the job the missing 8WebDec 16, 2011 · LINQ var lastFiveProducts = (from p in products orderby p.ProductDate descending select p).Take (5); Lambda var lastFiveProducts = products.OrderByDescending (p => p.ProductDate).Take (5); Which ever you prefer. Share Improve this answer Follow answered Dec 16, 2011 at 10:23 James 79.7k 18 163 236 on the job techniquesWebJun 7, 2011 · 15. I have this: var result = (from t in MyDC where t.UserID == 6 orderby t.UpdateTime select t.ID).Last (); Basically, I'm using Linq-to-Sql and it doesn't support the .Last operator. I could retrieve all the records of the user and then using linq to objects to get my value but I'm wondering how to do this with linq-to-sql and return only one ... ion usb turntable with builtin cd recordingWebJul 14, 2024 · 1. If the Employee.Empid is the primary key, a crude way to do this could be as follows: var empDepList = (from D in db.Department join E in db.Employee on D.Empid equals E.Empid where D.Status == 1 orderby E.Empid, D.Depid descending select new { D.DepartmentName, E.EmployeeName }).FirstOrDefault (); Share. on the jobs training in wilkes barre paWebDec 19, 2024 · As I understood, you need all records from Table, that belongs to active(IsActive = true) Customer with certain Id (CustomerId = ), and that records must be the latest (max(CreatedOn)). I didn't understand what is the ConsentId and do you … on the job: the missing 8