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Question about filter list of objects by interface

Posted By:      Posted Date: October 31, 2010    Points: 0   Category :ASP.Net
 

Hello 

public interface ISearchable
{
      int Id{ get; set;}
      int LanguageId{ get; set;}

}

class Programmer : ISearchable
{

    public int Id
    {
        get
        {
            return Id;
        }
        set
        {
            Id = value;
        }
    }

    public int LanguageId
    {
        get
        {
            return LanguageId;
        }
        set
        {
             LanguageId = value;
        }
    }
} public class Teacher : ISearchable { public int Id { get


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