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C# entity framework select top 10

WebSep 10, 2013 · I am making a simple application for insert, update, delete, select data with Entity Framework I already made insertion, deletion and select all data. Now I want to select with where condition with filter of two fields For ex : I have table with. userid username password email Now need selection like where email = "" and password = "" WebDec 3, 2024 · Entity Framework Versions: In the year 2008, Microsoft introduced Entity Framework as part of .NET Framework 3.5. Since then, it released many versions of Entity Framework. Currently, there are two latest versions of Entity Framework available one is EF 6 (works with .NET Framework) and another one is EF Core (works with .NET or …

c# - выполнить хранимую процедуру внутри транзакции Entity Framework ...

WebLinq to entities translate this to a sql query which may get different ranking for the same entity (as soon as your queries use Include). Then it causes the entity to get duplicated in the result list. WebNov 20, 2016 · I'm using ASP.NET Core with Entity Framework. First I select an employee, and then all employees that satisfy a condition (for the purpose of displaying what works): var a = db.Employee.FirstOrDefault(); var b = db.Employee.Where(x => x.FirstName == "Jack"); Now I try the same, but asynchronously: can i afford an investment property https://allcroftgroupllc.com

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WebFeb 20, 2013 · 4 Answers. Sorted by: 54. Use descending ordering (by date, or id) and FirstOrDefault which is supported: var showPiece = context.Portraits .OrderByDescending (p => p.Date) .FirstOrDefault (); Another option, is select portrait which has max date (id) via subquery (as Evelie suggested in comments): WebHaving checked the SQL profiler I have found EF generates a SELECT COUNT(*) for every row that is returned. I have tired every solution provided on this page. ... entity-framework; c#-4.0; entity-framework-4; entity-framework-4.1; or ask your own question. The Overflow Blog Going stateless with authorization-as-a-service (Ep. 553) ... WebData querying in EF Core is performed against the DbSet properties of the DbContext. The DbSet represents a collection of entities of a specific type - the type specified by the type parameter. Queries are specified using Language Integrated Query (LINQ), a component in the .NET Framework that provides query capability against collections in C# ... can i afford an electric car

c# - Entity Framework selection query - Stack Overflow

Category:c# - Entity Framework selection query - Stack Overflow

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C# entity framework select top 10

c# - How to take top 3 elements in each group using Entity Framework ...

WebAug 27, 2012 · In the first part of your query, the group.Select+orderBy+TOP1 is a "clear indication" that you are interested in the single row with highest 'value' in a column per group - but in fact, … WebSep 21, 2024 · A query expression is a query expressed in query syntax. A query expression is a first-class language construct. It is just like any other expression and can be used in any context in which a C# expression is valid. A query expression consists of a set of clauses written in a declarative syntax similar to SQL or XQuery.

C# entity framework select top 10

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WebSep 21, 2016 · The context object allows interaction with the database. Stuff like getting data from the database, saving data to the database, and putting data into objects. This line Is where the magic happens: 1. var posts = context.Posts; This one little line tells Entity Framework to go to the Posts table in the StackOverflow database, get ALL of the ... WebJul 4, 2013 · If you wanted to find the top 10 Videos with the most number of Tags, you would probably find it easier, but in fact what you want to do now is exactly the same. You just need the top 10 Tags with the most number of Videos. Use this: var mostUsedTags …

WebOct 31, 2024 · C# 8.0 and .NET Core 3.0 – Modern Cross-Platform Development: Build applications with C#, .NET Core, Entity Framework … WebDec 16, 2010 · Actually i know the sql query.I am using entity framework in my MVC application. I used this code var list = from s in _db.Lists select s; for getting the whole …

WebSelect multiple columns using Entity Framework. Maybe an easy question, but can't find it easily so forgive me =) I try to select multiple columns. The statement I use is: var dataset2 = from recordset in entities.processlists where recordset.ProcessName == processname select recordset.ServerName, recordset.ProcessID, recordset.Username; WebAug 22, 2024 · I need select top 10 LINQ query with group by, sum (quantity) and where clause using Entity Framework Core. Could somebody help me please to convert this SQL code to linq lambda? Thank you very much. SELECT TOP 10 OrderItems.ProductName, OrderItems.ProductId, SUM (OrderItems.Units) AS Quantity FROM Orders, OrderItems …

WebAug 25, 2024 · 3. Controller: Controllers act as an interface between Model and consider components to process all the business logic and incoming requests, manipulate data using the Model component, and interact with the Views to render the ultimate output.For instance, the Customer controller will handle all the interactions and inputs from the Customer …

WebSep 21, 2024 · This article introduces the basic concepts related to query expressions in C#. What is a query and what does it do? A query is a set of instructions that describes what … fitness bungee and harnessWebEntity SQL. Entity SQL is another way to create a query. It is processed by the Entity Framework's Object Services directly. It returns ObjectQuery instead of IQueryable. You need an ObjectContext to create a query using Entity SQL. The following code snippet shows the same query result as the LINQ query above. You can also use … fitness bunny sbahlecan i afford a 90000 houseWebJun 6, 2011 · using (Entities db = new Entities ()) { var product = (from p in db.Product where p.productId==id select a).Single (); } – Slavisa. Jun 6, 2011 at 11:29. Well assuming you have this, you can join this on SoldToData. You can group by SoldToData, Order by the count, Take 10 to take the first 10 (top selling) products. – thekip. can i afford a poolWebOct 7, 2024 · User-1711956637 posted from a data table i have to group by a particular column, and sum it and find the top 10 rows to plot in chart using linq · User1938476581 posted Hi, Try it like this var results = list.GroupBy(e => e.Country) // group the list by country .OrderByDescending( // then sort by the summed values DESC g => g.Sum(e => … can i afford an investment property canadaWebDec 4, 2024 · Find helpful customer reviews and review ratings for C# 9 and .NET 5 – Modern Cross-Platform Development: Build intelligent apps, websites, and services with Blazor, ASP.NET Core, and Entity Framework Core using Visual Studio Code, 5th Edition at Amazon.com. Read honest and unbiased product reviews from our users. fitness bumper plateWebDec 3, 2024 · Entity Framework Versions: In the year 2008, Microsoft introduced Entity Framework as part of .NET Framework 3.5. Since then, it released many versions of … can i afford a phd