C# entity framework multiple where

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WebJan 1, 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 … WebJul 15, 2024 · var list = new List () {"John", "Adam", "Bill", "David"}; context.People.Where (p=>list.Any (l=>l == p.Name)).ToList (); error message: System.InvalidOperationException: 'The LINQ expression 'DbSet .Where (p => __list_0 .Any (l => l == p.Name))' could not be translated.

Multiple condition in Where clause of entity framework Using …

WebFeb 6, 2014 · The IQueryable.ToQueryString method introduced in Entity Framework Core 5.0 may help with this scenario, if you are willing to have some raw SQL appearing in your code. This method will generate SQL that can be included in a raw SQL query to perform a bulk update of records identified by that query. For example: Web27. I am trying to delete multiple rows from a table. In regular SQL Server, this would be simple as this: DELETE FROM Table WHERE Table.Column = 'SomeRandomValue' AND Table.Column2 = 'AnotherRandomValue'. In Entity Framework 6, they have introduced RemoveRange () method. However, when I use it, rather than deleting rows using the … album panini qatar 2022 farmatodo

JOIN локальной коллекции и DbSet в Entity Framework …

Web6 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. WebSep 5, 2015 · The concept is to search a customer based on the search parameters. User can provide all or few or at least one of the search parameters. But I am quite new in Entity Framework and getting confused on how to do this. I can do this in traditional SQL coding by considering If - Else condition in c# side. WebMay 18, 2024 · SELECT * FROM TABLE WHERE (Field1 = X, Field2 = Y ... ) or (Field3 = Z) In a normal situation I would just do this: Object.Where (c => (c.Field1 == X && c.Field2 == Y) (c.Field3 == Z)) I cannot use this approach because the query is build by using multiple .Where () calls. Having an example: album papel cristal

How do I delete multiple rows in Entity Framework (without …

c# - Or Condition in Entity Framework - Stack Overflow

WebJan 17, 2024 · Этот код не работает в Entity Framework 6 вообще. В Entity Framework Core — работает, но всё будет выполнено на стороне клиента и в случае, когда в … WebSep 1, 2024 · C# var query = from b in context.Set () from p in context.Set ().Select (p => b.Url + "=>" + p.Title) select new { b, p }; var query2 = from b in context.Set () from p in context.Set ().Select (p => b.Url + "=>" + p.Title).DefaultIfEmpty () select new { b, p }; SQL SELECT [b]. [BlogId], [b]. [OwnerId], … album para fotografiaWebApr 10, 2024 · One of the slower parts of a database query is the transfer of the data to your machine. So it is good practice to transfer only the data you plan to use. When you use LINQ in entity framework, using Queryable.Select is a good way to specify exactly what data you want to transfer. This is usually done just before your final ToList ... album panini ligue 1 2022

"Web23 hours ago · entity framework can't map property to column in postgres. entity.Property (e => e.Vehicle) .HasColumnName ("code25") .HasColumnType ("character varying (255)") .HasMaxLength (255); This is the response I get : "42703: column s.vehicle does not existit ". can't map the property and column, everything else is working but this column. " - C# entity framework multiple where

C# entity framework multiple where

WebJan 17, 2024 · Of course, I can loop over typeVersionSets like: List MyResult = new List (); foreach (var set in typeVersionSets) { MyResult.AddRange ( await dbContext.MyTable .Where (pp => pp.TypeId == set.Type && pp.VersionId == set.Version) .ToListAsync () ); } However, this would require 10 database calls. WebIn Entity Framework 6, the MergeOption property has been replaced by the DbChangeTracker.QueryTrackingBehavior property.. The QueryTrackingBehavior property is an enum that determines how changes to entities are tracked by the DbChangeTracker.It has three possible values: Auto: This is the default behavior.When an entity is retrieved …

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Web1 day ago · c#; git; entity-framework-6; Share. Follow asked 2 mins ago. Luffy Zhong Luffy Zhong. 1. ... Entity Framework query says column not found for a column I never specified. ... EF Migrations - There is already an object named '' in the database. 0 Cannot create Multiple Ids but yet I only have one. 0 ... WebMay 14, 2024 · For instance, there could be multiple Where, and they could be at any point of the query chain. In your case, you could simply insert Where inside the Join , e.g. .Join (context.app_language.Where (al => al.languagecode = "es"), ... – Ivan Stoev May 14, 2024 at 19:45 Add a comment 2 Answers Sorted by: 20 Like this:

WebOct 15, 2012 · 3 Answers Sorted by: 5 You need to do it like this: return dataContext.Friends.Where (r => (r.ToUserId == touserid && r.FromUserId == fromuserid) (r.ToUserId == fromuserid && r.FromUserId == touserid)) .ToList (); The only difference is that I deleted the second r => and fixed the parenthesis. Share Follow answered Oct 15, … WebOct 14, 2024 · The Find method on DbSet uses the primary key value to attempt to find an entity tracked by the context. If the entity is not found in the context then a query will be sent to the database to find the entity there. Null is returned if the entity is not found in the context or in the database. Find is different from using a query in two ...

Web2 days ago · Not sure if this is best approach, but it does the job. I'm able to store multiple selection in single string and regenerate values back in view. Still learning Asp.net and Entity Framework, so I'm not quite yet there with relations WebThis is untested, but I believe the syntax should work for a lambda query. As you join more tables with this syntax you have to drill further down into the new objects to reach the values you want to manipulate. var fullEntries = dbContext.tbl_EntryPoint .Join ( dbContext.tbl_Entry, entryPoint => entryPoint.EID, entry => entry.EID, (entryPoint ...

WebNov 4, 2010 · Is there any difference between these two ways of querying the context? Firm firm = base.context.Firms .Where (f => f.SomeId == someId) .Where (f => f.AnotherId == anotherId) .FirstOrDefault (); Firm firm = base.context.Firms .Where (f => f.SomeId == someId && f.AnotherId == anotherId) .FirstOrDefault ();

WebApr 9, 2024 · I'm trying to code first a database with spanner and Entity Framework Core. But when EnsureCreated is hit, the application throws the following exception System.InvalidOperationException: 'No prim... album panini virtual qatar 2022WebEntity Framework 6 Update Graph; Entity Framework 6.1 Updating a Subset of a Record; Entity framework, code first. Child objects not populating when called; Entity Framework Code-First Execute Scalar-Valued Functions; More Articles; Declaring an anonymous type member with a simple name in C#; Entity Framework query performance differs extrem ... album parinorWebApr 2, 2013 · The Include is a Eager Loading function, that tells Entity Framework that you want it to include data from other tables. The Include syntax can also be in string. Like this: db.Courses .Include ("Module.Chapter") .Include ("Lab") .Single (x => x.Id == id); But the samples in LinqPad explains this better. Share Improve this answer Follow album per fotografie amazonWebSo, in this example (with three parameters per line), you can't have more than 700 Locations to filter. Using two items to filter, it will generate 6 parameters in the final SQL. The generated SQL will look like below (formatted to be clearer): exec sp_executesql N' SELECT [Extent1]. [Id] AS [Id], [Extent1]. album parental advisoryWeb1 day ago · I have default generated .tt template without any edits and so default generated entities. I want to override toString() method for all my entities to build big string with all properties' names and values. album per francobolli amazonWebApr 3, 2024 · var column = typeof (TEntity).Name + "ID"; var where = from id in SelectedIds select new WhereSpecifier (column, CheckMethod.Equal, id.ToString ()); return GetTable ().Where (where); Share Improve this answer Follow edited Dec 20, 2024 at 9:02 StepUp 35.6k 14 86 144 answered Apr 8, 2011 at 13:16 tster 17.7k 5 53 71 Add a comment 3 album per foto da incollareWebNov 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"); var c = await db.Employee.FirstOrDefaultAsync (); var d = await … album park el paso zip code