Entity framework include not working. Of course that doesn't offer the same flexibility as filtering Include on the fly. In my experience, if you find yourself using . In general, if you're fetching data for display, it's a better idea to . 0, EF-core has global query filters. The above works fine when using Entity Framework but the . Personal website with detailed how to tutorials Include () not working when Select new object in Entity framework Asked 10 years, 4 months ago Modified 10 years, 4 months ago Viewed 1k times. var blogArticles = context If something isn't working here with 3. Learn how including related objects help to simplify your LINQ query. I have 4 tables: Company, Employee, I'm developing a REST API application in . Access Hi, Thanks in advance for the help. NET and EF Core. Entity Framework Core will automatically fix-up navigation properties to any other entities that were previously loaded into the context instance. When there is an entity in the projection to which the Include can be applied, it is applied. My first question - be kind :-). zip In a . Here's the method I'm using in my repository: I recently updated to asp. " Include in Entity Framework Core is not working properly Asked 5 years, 3 months ago Modified 4 years, 6 months ago Viewed 223 times 0 I'm currently working on an ASP. net core 2. Entity); If the using statement is changed to using Microsoft. Include() extension method to return a collection of objects that have a child, where some of the children will be null. I have the following code in my repository. In the code below, I am attempting to reference an "Include (d)" entity (Schedules) to obtain its Name property. Include (p => p. Unlock the power of Entity Framework by understanding when you should use the Include method. 0 @rowanmiller provided an excellent workaround for a string based include function which allowed me to do this in my c Include () not working when filtered with Contains () and aggregating to list #12852 Closed as not planned Bug olivierr91 I became aware of this method, i. The not so simple rule is: projections don't always ignore Include. Deleted. SelectTest. RESOLVED - Problem was with LinqKit 1,1,7,3 For versions prior to EF CORE 1. For instance this: var entities = In this article, we are going to show you how to use Filtered Include method in EF Core to filter results inside the include method. Using a context instance to add a child entity X (a post in this case), but later filtering the ch I need to query one object with its related objects, I am using the unit of work pattern and repository pattern. load entities from multiple levels and multiple tables. In this post, we'll explore a common problem—why the Include () method doesn't return the expected data—and provide a clear solution. The Include is a Eager Loading function, that tells Entity Framework that you want it to include data from other tables. e. You should have a look at LinqPad, you can hook it up to your entity framework model and see what SQL is generated for your queries very easily, it's saved me so many times. e Customer) Entity Framework Classic Include Description The Include method lets you add related entities to the query result. Entity Framework Core Plus Query IncludeFilter Description With Entity Framework, "Include" method is often used to load related entities / child collections. We can start second Include to include that also in the result as shown below Note that Include always applied on the first entity in the query (i. The following code is only returning me the main object, but not the related ones. 0. However, the method doesn't let you use LINQ queryable methods like Where to filter entities to include which is a major drawback. Using Include method we can eagerly load the related entities in a single Query. Include() does not work when running EF Core (note the using System. May 22, 2021 · I have managed to find the issue which was that the specific data class for this entity was using the Include () extension method from System. Learn how the Include method allows you to load more data in the same query. NET Core Web API I have a controller which simply should return a list of entities with optional (foreign key is nullable) referenced entities which can be filtered by one crit Entity Framework Core Plus Query IncludeFilter Description With Entity Framework, "Include" method is often used to load related entities / child collections. 0 and trying to utilize the . In this case, developers can think that Entity Framework will analyze the usage of the data they manipulate to optimize the query but it does not so if you ask Entity Framework Core to return some data you don't need, it will do it. For some reason, query. NET Framework to . Topic in my code, I have to do it before marking existingUserTopic deleted. Users . For example, I have the below entities. I am facing an issue with the new Include filter on EF Core 5. Consider the following entities: In this article, we are going to show you how to use Filtered Include method in EF Core to filter results inside the include method. The problem is that it doesn't seem to load the "Tags" relation even though i have included a thing for it. Data. If final projection is not entity type whose navigations are eagerly loaded, Include will be ignored. ThenInclude(thenInclude); I know I may not be explaining this perfectly as I'm not sure how to accomplish this and that's why I'm asking. Include() can slow your queries, what actually happens under the hood, and the modern, efficient alternatives you should be using instead. It works fine if i do not join on tags bu I'm a little confused about a situation that occurred to me when using the include() method Entity Framework 6. Entity Framework appears to nullify navigation properties in memory as soon as an entity is marked as EntityState. This may be a really elementry question but whats a nice way to include multiple children entities when writing a query that spans THREE levels (or more)? i. These can be used to set predefined filter on entities that are to be included. I think this is quite deliberate and here's why: The Find method on DbSet uses the primary key value to attempt to find an entity tracked by the context. I recently updated to asp. So to access existingUserTopic. Include by no means a pointer to tell EF to perform a join. I will pass the example that occurred to me, so that you help me to understand what happened. Now, a simplistic suggestion for not ignoring Include is to say something like, "If an entity type in the final projection is also contained in some Include path, then use the remainder of that Include path. An easy and clean way to fix this is to use implicit includes over explicit ones. We have a table Projects with a C# model Project and a table Locations with a C# model Location. Tip Entity Framework Core will automatically fix-up navigation properties to any other entities that were previously loaded into the context instance. Filters Entity Framework core work-around Since version 2. 0) with Linq and GroupBy clause I noted that the ThenInclude method does not properly receive the objects Steps to reproduce // NOT WORKING EXAMPLE var query = context. Entity instead of Microsoft. Include when filling objects through the dbcontext. Unlock the power of EF Core by using Include and ThenInclude to retrieve related entities. Unlock the power of Entity Framework by including related entities in your LINQ query. Null is returned if the entity is not found in the context or in the database. 1, then please file a new issue so we can investigate. I have this query using Entity Framework Core (v2), but the Include/ThenInclude don't work as I expected. EF7 fills contained navigation properties even when not requested. 9 Our goal is to query a database, using Entity Framework Core and the . If you're using some other SQLite provider, then it would be useful to know which one and why. No problem. This is the query: var titlesOwnedByUser = context. Include then there is likely a better, simpler way of achieving what you are trying to do. NET Core application that uses Entity Framework Core to interact with a SQL Server database. 63 I am trying to work with Entity Framework Core 1. Double checked if the property name is correctly passed. Your database does not have foreign key constraint enforced, but you have reference navigation. In EF 6, both "schedule" and " It is due to a JSON Serialization issue, and there is two ways to fix it by Ignoring Reference Loop Handling, or JsonIgnore Attribute: Number 1: This was the fix to my issue, add this to Startup Include not working with join entities Asked 9 years, 3 months ago Modified 8 years, 10 months ago Viewed 7k times GASB Studies GAAP Utilization Summary and Working Paper Available The GASB staff has completed a study of GAAP utilization, including state financial reporting requirements and a statistical model of the determinants of GAAP choice. 0/3. 1. But this was making the query so long and complicated, and thus unmaintainable. Include() and . In EF Classic, the Include method no longer returns an IQueryable but instead an IncludeDbQuery that allows you to chain multiple related objects to the query result by using the AlsoInclude and ThenInclude methods. Sep 28, 2025 · In this article, we’ll break down why . 1 Since upgrading from . Just FYI, you don't need to include something to filter by it. Explicit Includes give you precise control over which related data gets loaded, helping you: SQLite and Entity Framework Core: why include doesn't work? Asked 8 years, 3 months ago Modified 8 years, 2 months ago Viewed 2k times The idea in my answer is just simple enough to apply, when it's not working maybe it's not applicable. public class Employee { public int EmployeeId { get; set; } public string Name { SCENARIO If I split the Entity Framework linq query to evaluate an IQueryable first and after try to include some properties, the value of AccessGroupAccessPoints and AccessGroupAccessPoints. Include(include). I'm facing a problem when i try to do an Ef Core request with a filtered include and a select The request is well filtered without à select but when i had a select for transforming my entities to m When you fetch an entity in EF Core, its related data doesn’t magically appear unless you tell EF Core to include it. If the entity is not found in the context then a query will be sent to the database to find the entity there. May 30, 2023 · About the query statement not working, do you mean the navigation property is null (you can't get the related entities)? If that is the case, please check the database, whether it contains the related records. There is a similar library from the maker of AutoMapper: EntityFramework. Use Using Include method we can eagerly load the related entities in a single Query. AsNoTracking() methods. The Include syntax can also be in string. Entity Framework 6 Include () not working Asked 7 years, 9 months ago Modified 7 years, 9 months ago Viewed 279 times Multiple Includes The Customer entity also related to Employee entity using the navigational property SupportRepId. I have a specific issue where I'm unable to retrieve the expected results when using the Include method along with Contains in a Where clause. , calling the same include many times to access different entities on deeper levels. Select() into a DTO object rather than including everything. Entity Framework "Include" does not load entity related tables Asked 5 years, 5 months ago Modified 5 years, 5 months ago Viewed 3k times Tip Entity Framework Core will automatically fix-up navigation properties to any other entities that were previously loaded into the context instance. NET Core 7 using ASP. When using Entity Framework Core (v1. " query = query. For instance this: var entities = Now, a simplistic suggestion for not ignoring Include is to say something like, "If an entity type in the final projection is also contained in some Include path, then use the remainder of that Include path. Where(u =&gt I have the following query of linq to entities. Permission . Learn how the Include method works and how you should use it. EntityFrameworkCore. NET Core, I've encountered an unexpected behavior in Entity Framework Core related to the use of . In my database, I have a User entity and related Address entity with a one-to-one relationship, as well as Categories Include by no means a pointer to tell EF to perform a join. The EF metadata model will enforce a strong relationship. Since upgrading all my Linq queries using Include Method are failing, it is not translated properly to SQL. As I understand it, the include method works as LEFT JOIN when the enclosed object is NULL and as OUTER JOIN when the object has match. Include() method does not work and related entity isn't included in result. EntityFrameworkCore then it works when running EF Core but not Entity Framework. Finally it's a long time I've not been working with EF and Linq-to-entity, so I may not help you much. So even if you don't explicitly include the data for a navigation property, the property may still be populated if some or all of the related entities were previously loaded. bj2e, qs3nw9, dicga, vgaqd, d3ux, jinqw, 1etk, jlk2sg, quoduc, ilngy0,