Using replace on a Linq Lambda Expression..

LinqReplace

void Main()
{

	var indi =  new List<Indi>();
	
	var cedulaSearch = "02317270340";
	indi.Add(new Indi{Name="Joseph", Cedula="013-1487034-8"});
	indi.Add(new Indi{Name="Milton", Cedula="023-1727034-0"});
	
	var result = indi.FirstOrDefault(u => u.Cedula.Replace("-","") == cedulaSearch);

}

// Define other methods and classes here
public class Indi
{
   public string Name {get; set;}
   public string Cedula {get; set;}
}