Entity framework where in list

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WebDec 14, 2012 · 4 Answers. You can use EntityFramework.Extended library, which is available from Nuget (don't forget to add using EntityFramework.Extensions; ): public static void DeleteObjects (this ObjectSet set, IEnumerable entities) where T : EntityObject { foreach (var entity in entities) set.DeleteObject (entity); } WebJan 2, 2016 · This predicate builder may not work with Entity Framework. But this one should work with entity framework. Using Dynamic Linq. This by far the easiest. Its very …

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Webpublic class Entity { public IList SomeListOfValues { get; set; } // Other code } Now, suppose we want to persist this using EF Core Code First and that we are using a … WebYou can use the Any method with a predicate to check if a string contains any strings from a list in Entity Framework. Here's an example: csharpvar myList = new List { "foo", "bar", "baz" }; var result = db.MyTable .Where(x => myList.Any(y => x.MyField.Contains (y))) .ToList(); In this example, myList contains a list of strings that we ... fix insecurity

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WebJan 23, 2024 · These roles are then mapped to Groups in our Database, so I can look those up: var groupsQuery = dbContext.Groups.Where (g=>roles.Any (r=>r==g.GroupName)); var groups = await groupsQuery.ToListAsync (); This query is quite happy and returns a collection of groups as expected. The groups however have access to another resource, … WebNov 12, 2014 · I want to query all users who belong to a list of families. So I get an array of families: var db = new MyProjectEntities (); User user = GetUserById ( (int)HttpContext.Current.Session ["CurrentUserId"]); var … WebMar 8, 2016 · But the best way is to create all navigation properties in the model. public class Product { public int Id { get; set; } public string Name { get; set; } public ICollection PriceLists { get; set; } } and let EF create queries for you. var query = db.Products.Where (p => !p.PriceLists.Any ()); cannabis attorney delray beach

How to store List with checkboxes in Db with Entity framework

Entity Framework - Linq to query where value in a list

WebMar 9, 2024 · Create a Console Application and call it AsyncDemo. Add the EntityFramework NuGet package. In Solution Explorer, right-click on the AsyncDemo project. Select Manage NuGet Packages…. In the Manage NuGet Packages dialog, Select the Online tab and choose the EntityFramework package. Click Install. WebApr 8, 2024 · 1 Answer. Sorted by: 1. If "Replies" is a navigation property on Comments, you can add an Include like so with your existing query: .Include ("Comments.Replies") This works the same way as the Includes you have, just easier to include nested navigation properties. Share. Improve this answer. Follow. fixins eastbound and downWebFind() In addition to LINQ extension methods, we can use the Find() method of DbSet to search the entity based on the primary key value.. Let's assume that SchoolDbEntities is our DbContext class and Students is the DbSet property.. var ctx = new SchoolDBEntities (); var student = ctx.Students.Find(1); . In the above example, ctx.Student.Find(1) returns a … cannabis autoflowering anbau

"Web2 days ago · Checkboxes are generated based on already saved data in different Database table. Idea is that based on what what checkbox is "checked" it's being added to list List with FustTypeName I'm stuck in part @Html.CheckBoxFor(model=>model.FustTypeList) as my list should contain strings, but output from checkbox is Boolean " - Entity framework where in list

Entity framework where in list

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WebApr 10, 2024 · Validation failed for one or more entities while saving changes to SQL Server Database using Entity Framework. 309 Entity Framework Code First - two Foreign Keys from same table. Load 5 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer? ... WebOct 14, 2024 · Finding entities using a query. Finding entities using primary keys. This topic covers the various ways you can query for data using Entity Framework, including LINQ …

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WebMar 11, 2024 · I want to achieve the following SQL Command in Entity Framework: SELECT * FROM Table1 WHERE RowID NOT IN ( SELECT SomeID FROM Table2 Where SomeID is not null) I tried the following (Asp.Net C#): var SomeIDs = db.Table2.Where (n => n.SomeID != null).Select (x => x.SomeID); var query = (from a in db.Table1 where ! Web2 days ago · Checkboxes are generated based on already saved data in different Database table. Idea is that based on what what checkbox is "checked" it's being added to list List …

WebAug 29, 2024 · You can use Contains method when you want to use a collection in your Where clause. var listOfIds = (from n in db.OrderDetail where n.OrderId == id select n.item_id); var itemEntity = (from m in db.ItemsEntity where … WebAug 24, 2011 · Essentially, I want to convert the following SQL syntax into Entity Framework syntax: select ID from dbo.List where ID not in (list of IDs) Here is a method …

WebDec 5, 2013 · ADO.NET Entity Framework and LINQ to Entities. ADO.NET Entity Framework and LINQ to Entities https: ... WebYou have to be aware between the difference of a query, and the result of the query. An IQueryable holds everything to perform the query. It isn't the query itself, and creating an IQueryable doesn't perform the query.

WebJun 15, 2011 · Using Entity Framework 4.0. I have a search condition like this. There are four fields that allow the users to filter their search. The conditions are all AND. The result has to omit the corresponding filter if the textbox value is String.Empty or the dropdownlist value is All. Could do this in a Stored Procedure but I am unable to mimic that ...

WebMay 9, 2013 · Entity Framework - Linq to query where value in a list. I'm using Entity Framework on .NET 3.5 and I can't for the life of me figure out how to write some Linq to traverse the following design: Basically I am … cannabis at the green brierWebApr 11, 2011 · Depending on your database it might look something like this (if you're connecting users with roles through a table called 'UserRoles') var roles = db.UserRoles.Where (x => x.UserID == ).Select (x => x.Role) (Of course you could also create a stored procedure returning a list of 'Role' if you like directly in your db … cannabis auburn caWebFeb 7, 2014 · var searchIds = new List{1,2,3,4,5}; var result = persons.Where(p => p.Locations.Any(l => searchIds.Contains(l.Id))); Contains will be translated to IN statement. Keep in mind that the id list goes into the sql statement. If your id list is huge then you'll … cannabis australia onlineWeb7 hours ago · I'm trying to do a raw SQL statement which resembles this. DELETE FROM db.T0590_CODE_STRING WHERE IN (1,1,2,3,5) the values in the IN clause are from rowIds list so therefore I'm trying to use a string.Join() but then the values are implemented as a String and not an Integer. cannabis backenWeb2 days ago · As mentioned, the IDs are only generated once the SaveChanges() is called. Fortunately, EF will populate the IDs in the entity object references when they are inserted, so the solution is to keep the entity references and get the IDs after saving. fixins downtown los angelesWebJul 15, 2024 · The solution is using a function that can be translated into SQL, var list = new List () {"John", "Adam", "Bill", "David"}; var matchingPeople = … cannabis autoflowering seeds for sale in usa cannabis bachelorarbeit