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 …
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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
Efficient Querying - EF Core Microsoft Learn
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