2024 Entity framework where in list

Entity framework where in list

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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 … 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 …

Entity Framework: SELECT From Where ID NOT IN - Stack Overflow

WebFeb 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 … 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 ... brick township wipp

Entity Framework select from a list of ids obtained from …

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 … WebApr 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 … 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 brick township vocational school

LINQ-to-Entities Queries in Entity Framework

DBContext - Get entities based on a list

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 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 … brick township water billWebJan 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 … brick township trash collection

"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, … " - Entity framework where in list

Entity framework where in list

How can i write raw SQL commands in EntityFramework 6

WebNov 4, 2010 · Entity Framework .Where method chaining. Is there any difference between these two ways of querying the context? Firm firm = base.context.Firms .Where (f => … 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 …

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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. 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 …

WebOct 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... 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 …

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 …

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.

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 … brick township water heater installationWebDec 5, 2013 · ADO.NET Entity Framework and LINQ to Entities. ADO.NET Entity Framework and LINQ to Entities https: ... brick township water heater repairWebAug 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 … brick township water bill payWeb2 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. brick township yard salesWebDec 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); } brick township zip code njWebMar 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 ()); brick township water utilityWebThere 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 … brick township wrestling