c# - removing duplicates in a list with linq -

suppose have list of myobject this:

public class myobject {   public int objectid {get;set;}   public string prop1 {get;set;} }

how remove duplicates list there multiple instance of objects same objectid.

thanks.

you can use groupby() , select first item of each group achieve want - assuming want pick 1 item each distinct objectid property:

var distinctlist = mylist.groupby(x => x.objectid)                          .select(g => g.first())                          .tolist();

alternatively there distinctby() in morelinq project allow more concise syntax (but add dependency project):

var distinctlist = mylist.distinctby( x => x.objectid).tolist();

Expalin