how to get top 5 records in linq with lambda expression

LINQ to Entities returns the top N records.

You can just use the ....Take... method call to get a couple of result. You can read more on this topic ...here.... ...You need to understand that the query will not be executed unless someone executes the ...GetEnumerator()....

LINQ Lambda: Getting Last item (where == ) of sub collection

Have a look at the list of ...Supported and Unsupported LINQ Methods.......Last()... is not supported, but ...First()... is, so you can just go on and reverse your ordering and use ...First()... instead of ...Last().......mf => mf.AuditItems.OrderByDescending(ai => ai.DateOfAction).First().Step == 1);

What is equivalent to clause between, for comparasion strings in LINQ or lambda expression of?

Have you tried:...yourDataContext.Country.Where(c => c.Name >= "Argentina" && c.Name <= "Jamaica");

Lambda expression with AND operator in lambda expression

I get an error (...Object reference not set to an instance of an object...) when i try to do the database operation, i can't seem to find what's wrong, must be something from this ...p.ADRESA.Equals(listBox1.SelectedItem.ToString()... because without it the code works but i need two conditions, please help... Int16 idValoare =Convert.ToInt16 (combo...

How to use ToShortDateString in linq lambda expression?

Linq to Entities cannot convert ...ToSortDateString... method into SQL code. You can't call it on server side. Either move filtering to client side (that will transfer all data from server to client), or consider to use ...server-side functions... to take date part of date (you should pass ...DateTime... object instead of ...shortDateString...):...

Operator '&&' cannot be applied to operands of type 'lambda expression' and 'lambda expression

I want to retrive all the records that have the IP or MAC addresses or if any of these are Null, so i wrote my method as follow:-...public IQueryable<Technology> AdvanceSearch(string ip = null, string mac = null, int techtype) { var relatedresourcesID = entities.NetworkInfoes .Where((a => String.IsNullOrEmpty(ip...

Expression of type 'System.Linq.Expressions.Expression cannot be used for parameter of type

I created dynamic select for Type...public static IQueryable<TResult> Select<TSource, TResult>(this IQueryable<TSource> source, TResult result) { var resultType = typeof(TResult); var resultObj = Expression.New(resultType); var receiverProperties = resultType.GetProperties(); var sourceParameter = Expression.Parameter(typeof(TSource...

Delete record using linQ with lambda Expression

public bool DeleteRecord(int caurseID) { studentEntities db = new studentEntities(); var students = db.student.Where(s => s.caurse_id == caurseID); if(students.Any()) { db.DeleteAllOnSubmit(students); db.SubmitChanges(); } return true; }

How do I create a lambda expression using return value from another lambda expression?

Neither the question nor the answer is the same as the question "Convert Linq expression “obj => obj.Prop” into “parent => parent.obj.Prop”".... The only duplicate I've found on here lately is the number of duplicate mods with control issues....I'm attempting to make a extension method for Entity Framework that will add a "Contains" call o...

Unable to cast object of type 'System.Linq.Expressions.MethodCallExpression' to type 'System.Linq.Expressions.LambdaExpression'

I am using EntityFramework and having trouble with the above error. When I invoke ...var documents = docRepository.GetAllSavedDocuments(); var withRatings = documentFilter.GetDocumentsWithRating(documents, 1); ...I get the error in the title....My code is split across a few classes...public class DocRepository { public IQueryable<Document> GetA...