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list=list.Distinct(new DcComparer ()).ToList();
public class DcComparer : IEqualityComparer<Dc>
{
public bool Equals(Dc t1, Dc t2)
{
return (t1.IssuerCode== t2.IssuerCode&& t1.LACode== t2.LACode);
}
public int GetHashCode(Dc t)
{
return t.ToString().GetHashCode();
}
}