Error When Getting Data From The Database. VWDE/SQL/Asp.Net/C#

 I get the error:

Index out of range exception was unhandled by user code.

At the line:

Label4.Text += reader["RelativeLN"].ToString();



The two lines above it:

Label4.Text += reader["Relation"].ToString() + ": ";

Label4.Text += reader["RelativeFN"].ToString();



will read just fine if I comment out that third line. I don't
understand why this could be happening. There is data in the db for the
RelativeLN column and it has the same data type as the previous two
columns.



private void getRelatives()

{

//Define database connection

SqlConnection conn = new SqlConnection(

"Server=localhost\SqlExpress;Database=MyDB;" + "Integrated Security=True");

//Create command

SqlCommand comm = new SqlCommand("SELECT Relation, RelativeFN FROM
RelativeTable WHERE RelativeTable.UserID IN (SELECT UserID FROM UsrTbl
WHERE UserName = @usrnmeLbl)", conn);

comm.Parameters.AddWithValue("@usrnmeLbl", usrNmeLbl.Text);

conn.Open();

SqlDataReader reader = comm.ExecuteReader();

while (reader.Read())

{

Label4.Text += reader["Relation"].ToString() + ": ";

Label4.Text += reader["RelativeFN"].ToString();

Label4.Text += reader["RelativeLN"].ToString();

}

}



I'm hoping someone can provide me some info on what could possibly be going wrong.

Thank you so much in advance.