public void InitData()

        {

               // instantiate the connection

               conn = new SqlConnection(
                       "Server=(local);DataBase=Northwind;Integrated Security=SSPI");

               // 1. instantiate a new DataSet

               dsCustomers = new DataSet();

               // 2. init SqlDataAdapter with select command and connection

               daCustomers = new SqlDataAdapter(
                       "select CustomerID, CompanyName from Customers", conn);

               // 3. fill in insert, update, and delete commands

               SqlCommandBuilder cmdBldr = new

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