What Am I Missing In This Code Which Throws An Exception At Runtime?

{

//setup the connection and connection string

SqlConnection addTutor = new SqlConnection();

addTutor.ConnectionString = "data source=QUAKEMASTER;" +

"initial catalog=DThomas;uid=sa;password=**********;";

string InsertTutor = "INSERT INTO Tutors (firstname, lastname, tutorID, office)Values(@firstName, @lastName,@tutorID,@location)";

SqlCommand insertTutor = new SqlCommand(InsertTutor);

insertTutor.Connection = addTutor;

//populating an array of sqlParameters performs the same function as an SqlParameters.Add

SqlParameter[] param = new SqlParameter[4];

param[0] = new SqlParameter("@firstName",txtFirstName.Text);

param[1] = new SqlParameter("@lastName",txtLastName.Text);

param[2] = new SqlParameter("@tutorID",int.Parse(txtTutorID.Text));

param[3] = new SqlParameter("@location",listOffice.SelectedItem.ToString());

try

{

//open the connection

addTutor.Open();

//execute the NonSqlQuery

insertTutor.ExecuteNonQuery();

//close the connection

insertTutor.Connection.Close();

}

catch (Exception ThatFeckedUp)

{

throw ThatFeckedUp;

}

finally

{

addTutor.Close();

}



}

 

Sure i've missed something just not sure what.....