The CData ADO.NET Provider for QuickBooks POS enables you to take advantage of the bulk load support in QuickBooks POS through QuickBooksPOSDataAdapters. You can use the Batch API to execute related SQL data manipulation statements simultaneously. The provider translates all SQL queries in the batch into a single request.

Using the ADO.NET Batch API

Performing a batch update consists of the following basic steps:

1. Define custom parameterized SQL statements in QuickBooksPOSCommand objects.
2. Set the UpdatedRowSource property of the QuickBooksPOSCommand object to "UpdateRowSource.None".
3. Assign the QuickBooksPOSCommand objects to the QuickBooksPOSDataAdapter.
4. Add the parameters to the command.
5. Call the QuickBooksPOSDataAdapter's Update method. Pass in a DataSet or DataTable containing your changes.

Controlling Batch Size

Depending on factors such as the size of the request, your network resources, and the performance of the server, you may gain performance by executing several smaller batch requests. You can control the size of each batch by setting the QuickBooksPOSDataAdapter's UpdateBatchSize property to a positive integer.

Bulk INSERT

The following code prepares a single batch that inserts records in bulk and retrieves the new records' Ids. The example executes a batch INSERT of new DataRows, which have the "Added" state.

C#

QuickBooksPOSDataAdapter adapter = new QuickBooksPOSDataAdapter();

using (QuickBooksPOSConnection conn = new QuickBooksPOSConnection("user=myuseraccount;password=mypassword;URL=http://localhost:2080;qbxmlversion=3.0;")) {
  conn.Open();
  adapter.InsertCommand = conn.CreateCommand();
  adapter.InsertCommand.CommandText = "INSERT INTO Customers (LastName) VALUES (@LastName)";
  adapter.InsertCommand.UpdatedRowSource = UpdateRowSource.None;
  adapter.InsertCommand.Parameters.Add("@LastName", "LastName");

  DataTable batchDataTable = new DataTable();
  batchDataTable.Columns.Add("LastName", typeof(string));
  batchDataTable.Rows.Add("Smith");
  batchDataTable.Rows.Add("Hook");
  adapter.UpdateBatchSize = 2;
  adapter.Update(batchDataTable);

  QuickBooksPOSCommand cmd = new QuickBooksPOSCommand("SELECT * FROM LastResultInfo#TEMP", conn);
  adapter = new QuickBooksPOSDataAdapter(cmd);
  DataTable res = new DataTable();
  adapter.Fill(res);
  foreach (DataRow row in res.Rows) 
    foreach(DataColumn col in res.Columns)
      Console.Write("{0}: {1}", col.ColumnName, row[col]);
}

VB.NET

 
Dim adapter As New QuickBooksPOSDataAdapter()

Using conn As New QuickBooksPOSConnection("user=myuseraccount;password=mypassword;URL=http://localhost:2080;qbxmlversion=3.0;")
  conn.Open()
  adapter.InsertCommand = conn.CreateCommand()
  adapter.InsertCommand.CommandText = "INSERT INTO Customers (ListId) VALUES (@LastName)"
  adapter.InsertCommand.UpdatedRowSource = UpdateRowSource.None
  adapter.InsertCommand.Parameters.Add("@LastName", "LastName")

  Dim batchDataTable As New DataTable()
  batchDataTable.Columns.Add("LastName", GetType(String))
  batchDataTable.Rows.Add("Hook")
  batchDataTable.Rows.Add("Smith")
  adapter.UpdateBatchSize = 2
  adapter.Update(batchDataTable)

  Dim cmd As New QuickBooksPOSCommand("SELECT * FROM LastResultInfo#TEMP", conn)
  adapter = New QuickBooksPOSDataAdapter(cmd)
  Dim res As New DataTable()
  adapter.Fill(res)
  For Each row As DataRow In res.Rows 
    For Each col As DataColumn In res.Columns
      Console.WriteLine("{0}: {1}", col.ColumnName, row(col))
    Next
  Next
End Using