c# - How to get list of specific child instances from list of parent instances? -

the answer simple not find myself.

my classes follows

public class element { }  public class lineelement : element { }  public class circleelement : element { } 

in code want achieve this:

list<element> elements = new list<element>();  list<lineelement> lines = elements.where( x=> ..........).tolist(); 

what way achieve without defining type specifying property (like string type) in child classes?

you need oftype() method.

list<lineelement> lines = elements.oftype<lineelement>.tolist();