The CData ADO.NET Provider for QuickBooks implements two ADO.NET interfaces you can use to retrieve data from QuickBooks: QuickBooksDataAdapter and QuickBooksDataReader objects. Whereas QuickBooksDataAdapter objects retrieve a single result set of all the data that matches a query, QuickBooksDataReader objects fetch data in subset increments as needed.

Using the QuickBooksDataAdapter

Use the adapter's Fill method to retrieve data from the data source. An empty DataTable instance is passed as an argument to the Fill method. When the method returns, the DataTable instance is populated with the queried data. Note that the QuickBooksDataAdapter is slower than the QuickBooksDataReader because the Fill method needs to retrieve all data from the data source before returning.

The following example selects the Id and Name columns of the Customers table:

C#

string connectionString = "User=test;Password=test;URL=http://localhost:8166;";

using (QuickBooksConnection connection = new QuickBooksConnection(connectionString)) {
  QuickBooksDataAdapter dataAdapter = new QuickBooksDataAdapter(
  "SELECT Id, Name FROM Customers", connection);

  DataTable table = new DataTable();
  dataAdapter.Fill(table);

  Console.WriteLine("Contents of Customers.");

  foreach (DataRow row in table.Rows) {
    Console.WriteLine("{0}: {1}", row["Id"], row["Name"]);
  }
}

VB.NET

Dim connectionString As String = "User=test;Password=test;URL=http://localhost:8166;"

Using connection As New QuickBooksConnection(connectionString)
  Dim dataAdapter As New QuickBooksDataAdapter("SELECT Id, Name FROM Customers", connection)

  Dim table As New DataTable()
  dataAdapter.Fill(table)

  Console.WriteLine("Contents of Customers.")

  For Each row As DataRow In table.Rows
    Console.WriteLine("{0}: {1}", row("Id"), row("Name"))
  Next
End Using