Listing A
Function MyQueryMethod() As System.Data.DataSet
    Dim connectionString As String = "server='balrog'; user id='sa'; " & _
password=''; Database='Northwind'"
    Dim sqlConnection As System.Data.SqlClient.SqlConnection = New & _
System.Data.SqlClient.SqlConnection(connectionString)
  
    Dim queryString As String = "SELECT [Customers].[CompanyName] FROM [Customers]"
    Dim sqlCommand As System.Data.SqlClient.SqlCommand = New & _
System.Data.SqlClient.SqlCommand(queryString, sqlConnection)
  
    Dim dataAdapter As System.Data.SqlClient.SqlDataAdapter = New & _
System.Data.SqlClient.SqlDataAdapter(sqlCommand)
    Dim dataSet As System.Data.DataSet = New System.Data.DataSet
    dataAdapter.Fill(dataSet)
  
    Return dataSet
End Function