c# read last record from database error

Question

I can not find fault.please help me

 

Additional information: Object reference not set to an instance of an object
 

----------------------------------------------- 

 

public static ENOTLAR Select(ENOTLAR item)

{

try

{

SqlCommand com = new SqlCommand("NOTLAR_SonKayit", Baglanti.Con);

com.CommandType = CommandType.StoredProcedure;

if (com.Connection.State != ConnectionState.Open)

{

com.Connection.Open();

}

com.Parameters.AddWithValue("ID", item.ID);

SqlDataReader rdr = com.ExecuteReader();

while (rdr.Read())

{

item = new ENOTLAR();

item.ID = Convert.ToInt32(rdr["ID"]);

item.KONU = rdr["KONU"].ToString();

item.TARIH = Convert.ToDateTime(rdr["TARIH"]);

item.YAZI = rdr["YAZI"].ToString();

}

rdr.Close();

}

catch

{

item = null;

}

return item;

}

-------------- ---------------

private void LastNot()

{

ENOTLAR not = new ENOTLAR();

BLLNOTLAR.Skayit(not);

toolStripLabel3.Text = not.YAZI.ToString();

}

-------------------------- 

sql procedure

 

NOTLAR_SonKayit

 

CREATE PROC NOTLAR_SonKayit

AS

SELECT TOP 1 YAZI FROM NOTLAR

ORDER BY ID DESC;