Entity Framework 6.0 Tutorials(7):DbSet.AddRange & DbSet.RemoveRange
DbSet.AddRange & DbSet.RemoveRange:
DbSet in EF 6 has introduced new methods AddRange & RemoveRange. DbSet.AddRange adds collection(IEnumerable) of entities to the DbContext, so you don't have to add each entity individually.
IList<Student> newStudents = new List<Student>();
newStudents.Add(new Student() { StudentName = "Student1 by addrange" });
newStudents.Add(new Student() { StudentName = "Student2 by addrange" });
newStudents.Add(new Student() { StudentName = "Student3 by addrange" }); using (var context = new SchoolDBEntities())
{
context.Students.AddRange(newStudents);
context.SaveChanges();
}
Similarly, DbSet.RemoveRange is used to remove collection of entities from DbSet.
IList<Student> existingStudents = ….. using (var context = new SchoolDBEntities())
{
context.Students.RemoveRange(existingStudents);
context.SaveChanges();
}
Download sample project for DbSet.AddRange demo.
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