MultipleActiveResultSets=True...where should I put it?

Question

Sorry guys, the code below returns the error  There is already an open DataReader associated with this Command which must be closed first.
Googling I discovered that I should add up MultipleActiveResultSets=True  to my connection.string. But I am wondering how. The error can be because I am calling a view?
Dim mysql As String = "Select customer, perc from testscript"
Dim adoconn As SqlClient.SqlConnection = DirectCast(Dts.Connections("ldnpreportsrv.Control1").AcquireConnection(Dts.Transaction), SqlClient.SqlConnection)
Dim sqlcommand As New SqlClient.SqlCommand(mysql, adoconn)
Dim reader2 As SqlDataReader = sqlcommand.ExecuteReader(CommandBehavior.CloseConnection)
Dim customer As String
Dim percentage As String
Dim message As String
Do While reader2.Read()
customer = reader2("customer").ToString()
percentage = reader2("perc").ToString()
message += "Customer: " & customer & Chr(13) & Chr(10)
message += "Percentage: " & percentage & Chr(13) & Chr(10)
Loop
sqlcommand.ExecuteNonQuery()
adoconn.Close()
Dim button As DialogResult = MessageBox.Show(message, "Cool", MessageBoxButtons.OK)
Dts.TaskResult = ScriptResults.Success

Answer 1

Yes, ArthurZ is correct. ExecuteNonQuery will execute the same command again and discard the resultset, which serves no purpose here.  You get the error because you still have reader2 open on the connection.  Instead, you should close the
data reader.  Replace the ExecuteNonQuery line with:
reader2.Close()
Dan Guzman, SQL Server MVP, http://www.dbdelta.com