public DataSet SelectBusinessKeywordByBusinessID(BALBusinessKeyword obj)
    {
        query = "select * from BusinessKeyword bk inner join Business b on bk.BusinessId=b.BusinessId inner join Keyword k on bk.KeywordId=k.KeywordId where bk.BusinessId="+obj.BusinessId;
        DataSet ds = new DataSet();
        SqlDataAdapter adp = new SqlDataAdapter(query, con);
        adp.Fill(ds);

        return ds;
    }
    public void UpdateBusinessKeyword(BALBusinessKeyword obj)
    {
        query = "update BusinessKeyword set BusinessId=" + obj.BusinessId + ",KeywordId=" + obj.KeywordId;

        SqlCommand cmd = new SqlCommand(query, con);

        con.Open();
        cmd.ExecuteNonQuery();
        con.Close();
    }
    public void InsertBusinessKeyword(BALBusinessKeyword obj)
    {
        query="insert into BusinessKeyword(BusinessId,KeywordId) values("+obj.BusinessId+","+obj.KeywordId + ")";

        SqlCommand cmd=new SqlCommand(query,con);

        con.Open();
        cmd.ExecuteNonQuery();
        con.Close();
    }
    public void DeleteBusinessKeyword(BALBusinessKeyword obj)
    {
        query = "delete from BusinessKeyword where BusinessKeywordId=" + obj.BusinessKeywordId;

        SqlCommand cmd = new SqlCommand(query, con);

        con.Open();
        cmd.ExecuteNonQuery();
        con.Close();
    }