The CData ADO.NET Provider for SendGrid enables you to take advantage of the bulk load support in SendGrid through SendGridDataAdapters. 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 SendGridCommand objects.
2. Set the UpdatedRowSource property of the SendGridCommand object to "UpdateRowSource.None".
3. Assign the SendGridCommand objects to the SendGridDataAdapter.
4. Add the parameters to the command.
5. Call the SendGridDataAdapter'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 SendGridDataAdapter'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#

SendGridDataAdapter adapter = new SendGridDataAdapter();

using (SendGridConnection conn = new SendGridConnection("APIKey=abc123;")) {
  conn.Open();
  adapter.InsertCommand = conn.CreateCommand();
  adapter.InsertCommand.CommandText = "INSERT INTO MarketingCampaigns (Subject) VALUES (@Subject)";
  adapter.InsertCommand.UpdatedRowSource = UpdateRowSource.None;
  adapter.InsertCommand.Parameters.Add("@Subject", "Subject");

  DataTable batchDataTable = new DataTable();
  batchDataTable.Columns.Add("Subject", typeof(string));
  batchDataTable.Rows.Add("March Top 50 football highlights.");
  batchDataTable.Rows.Add("March Top 50 football highlights.");
  adapter.UpdateBatchSize = 2;
  adapter.Update(batchDataTable);

  SendGridCommand cmd = new SendGridCommand("SELECT * FROM LastResultInfo#TEMP", conn);
  adapter = new SendGridDataAdapter(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 SendGridDataAdapter()

Using conn As New SendGridConnection("APIKey=abc123;")
  conn.Open()
  adapter.InsertCommand = conn.CreateCommand()
  adapter.InsertCommand.CommandText = "INSERT INTO MarketingCampaigns (Title) VALUES (@Subject)"
  adapter.InsertCommand.UpdatedRowSource = UpdateRowSource.None
  adapter.InsertCommand.Parameters.Add("@Subject", "Subject")

  Dim batchDataTable As New DataTable()
  batchDataTable.Columns.Add("Subject", GetType(String))
  batchDataTable.Rows.Add("March Top 50 football highlights.")
  batchDataTable.Rows.Add("March Top 50 football highlights.")
  adapter.UpdateBatchSize = 2
  adapter.Update(batchDataTable)

  Dim cmd As New SendGridCommand("SELECT * FROM LastResultInfo#TEMP", conn)
  adapter = New SendGridDataAdapter(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