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

Using the GreenhouseDataAdapter

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 GreenhouseDataAdapter is slower than the GreenhouseDataReader because the Fill method needs to retrieve all data from the data source before returning.

The following example selects the Id and CandidateId columns of the Applications table:

C#

string connectionString = "APIKey=YourAPIKey;";

using (GreenhouseConnection connection = new GreenhouseConnection(connectionString)) {
  GreenhouseDataAdapter dataAdapter = new GreenhouseDataAdapter(
  "SELECT Id, CandidateId FROM Applications", connection);

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

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

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

VB.NET

Dim connectionString As String = "APIKey=YourAPIKey;"

Using connection As New GreenhouseConnection(connectionString)
  Dim dataAdapter As New GreenhouseDataAdapter("SELECT Id, CandidateId FROM Applications", connection)

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

  Console.WriteLine("Contents of Applications.")

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