Entity framework where in list

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WebMar 29, 2024 · I am using ASP.net Core 3.0 with Entity Framework Core 3.0 and Pomelo.EntityFrameworkCore provider for MySQL, I need to query all the users that are from specific Towns. Lets say for example I have a list of strings called targettedTowns in which I have the following towns WebThere is a library, EntityFramework.DynamicFilters that makes this a lot easier. It allows you to define global filters for entities, that will subsequently be applied any time the entity is …

EF Core query where Were clause is a collection?

Web1. You need to use the Include () clause when reading the data, in order to ask Entity Framework to perform a JOIN operation and retrieve the related records. Week … WebFeb 9, 2024 · You can do the same with Entity Framework by using the Contains predicate with a Where. First you need to put the OrderIds you are looking for in some sort of … newphotonics israel

Using async with Entity Framework select list of type …

WebDec 5, 2013 · ADO.NET Entity Framework and LINQ to Entities. ADO.NET Entity Framework and LINQ to Entities https: ... 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 … 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 ! new photo funia

Multiple .Where() clauses on an Entity Framework Queryable

c# - Entity Framework List Contains in lambda - Stack Overflow

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 ... introverted cervixWebJul 15, 2024 · The solution is using a function that can be translated into SQL, var list = new List () {"John", "Adam", "Bill", "David"}; var matchingPeople = … new photo of queen with great grandchildren

"WebThe alternative works because the return type is the same as the entity. The first option can be used if your return type is different from your entity and you'll need a mapping. You … " - Entity framework where in list

Entity framework where in list

Querying and Finding Entities - EF6 Microsoft Learn

WebAug 29, 2024 · Entity Framework select from a list of ids obtained from another E.F select query. I'm trying to get ItemsEntity from a E.F query with a where statement. The … 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.

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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. 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 …

WebMar 29, 2024 · Table-specific facet configuration. EF Core offers a lot of flexibility when it comes to mapping entity types to tables in a database. This becomes even more useful when you need to use a database that wasn't created by EF. The below techniques are described in terms of tables, but the same result can be achieved when mapping to … 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 …

Web7 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. 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, …

WebIt depends. If this list is also coming from the database then the best way to handle it is a join statement in SQL instead of an IN which can be done using a couple of different …

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 ()); new photo of archie and harryWebEntity Framework class with list of object. I'm using EF 6.0 and ASP.NET MVC with C# and I have two classes - project and feature: public class project { [Key] [DatabaseGenerated … introverted childWebFeb 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 … new photo not showing in teamsWebApr 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 … new photo licence ukWebApr 11, 2011 · 3. You can't combine a local list with remote data, then there is nothing for the db to read from since the data is elsewere (on your client). I think there might be … introverted christian womenWebJun 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 ... new photo productsWebOct 16, 2024 · I have a List of Foo, where Foo is: public class Foo { public string Id { get; set; } public string Name { get; set; } } and a database entity Bar: public partial class Bar { public string I... new photo of prince andrew and maxwell