How to remove items in Entity Collection?
ex:
I have two entities that is related to each other
Employee and Reference
**Table: Employee**
EmployeeId(PK)
**Table: Reference**
ReferenceId(PK)
EmployeeId(FK)
Name
first I Initialize this:
Employee empCol = new Employee();
Reference refs = new Reference();
and then I save some data in the Entity Collection
refs.Name = "Sample";
empCol.References.Add(refs);
refs.Name = "Sample2";
empCol.References.Add(refs);
I want to remove the second element in the collection, how can I do that?
[0]= {Name = "Sample"}
[1]= {Name = "Sample2"}
I try this kind of code but it is not working, this code does not removing the second element in my Entity Collection, but it is not producing errors:
empCol.References.ToList().RemoveAt(1);
Dont assume how index
is maintained inside by collection
. Find the object first
, and then remove
it from collection
var ref = empCol.References.FirstOrDefault( r=> r.Name == "Sample");
if (ref != null)
empCol.References.Remove(ref);
If you want to remove by index
, Find that index first.