WebThe Include () extension method can also be used after the FromSql () method, as shown below. var context = new SchoolContext (); var studentWithGrade = context.Students .FromSql ( "Select * from Students where FirstName ='Bill'" ) .Include (s => s.Grade) .FirstOrDefault (); WebDec 20, 2012 · If you need to filter out any rows from the PackageDetails then you will need to do that in the select clause. Also using the Include statement will always include all records, it ignores anything but the Table name.
Linq Query with a Where clause in an Include …
WebSep 15, 2024 · On the right side of the expression, notice that the where clause is now expressed as an instance method on the numbers object, which as you will recall has a type of IEnumerable. If you are familiar with the generic IEnumerable interface, you know that it does not have a Where method. Linq Query with a Where clause in an Include statement [duplicate] Closed 2 years ago. I am trying to replace my big, ugly query; although ugly it works as desired:-. using (var ctx = new Data.Model.xxxTrackingEntities ()) { var result = ctx.Offenders .Join (ctx.Fees, o => o.OffenderId, f => f.OffenderId, (o, f) => new { Offenders = o, Fees = f ... flood alexandria
entity-framework - Linq 到 SQL 在 where 子句中使用 COALESCE 查 …
WebMar 12, 2024 · LINQ Include () allows to include the related entities or objects from a list. The list can be loaded from a database or any static list. There are several ways to read data from the data source and load results into the navigation properties of an entity. WebFeb 8, 2024 · public IEnumerable GetStudentIdsByRoleAndCourse (string role, string courseId = null) { var query = (from item in Data.TableForQuery () where item.RoleId == role select item).ToList (); return (from item in query let student = Students.GetModelById (item.StudentId) where student.DisplayInReports && (courseId == null student.CourseId … WebApr 20, 2015 · Instead just perform the include conditionally: C# using ( var cont = DALProvider.CreateEntityContext ()) { var query = dalProv; if (MyString != null ) query = query.Include (i => i.T232); if (MyDecimal == 8 ) query = query.Include (i => i.T234); // potentially further includes or where-predicates... // query = query.Where (...) return query; } flood alleviation scheme