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

Using the GoogleDriveDataReader

The GoogleDriveDataReader retrieves data faster than the GoogleDriveDataAdapter because it can retrieve data in pages. As you read data from the GoogleDriveDataReader, it periodically requests the next page of results from the data source, if required. This causes results to be returned at a faster rate. The following example selects all the columns from the Files table:

C#

string connectionString = "InitiateOAuth=GETANDREFRESH;";

using (GoogleDriveConnection connection = new GoogleDriveConnection(connectionString)) {
  GoogleDriveCommand cmd = new GoogleDriveCommand("SELECT * FROM Files", connection);
  
  GoogleDriveDataReader rdr = cmd.ExecuteReader();

  while (rdr.Read()) {
    Console.WriteLine(String.Format("\t{0} --> \t\t{1}", rdr["Id"], rdr["Name"]));
  }
}

VB.NET

Dim connectionString As String = "InitiateOAuth=GETANDREFRESH;"

Using connection As New GoogleDriveConnection(connectionString)
  Dim cmd As New GoogleDriveCommand("SELECT * FROM Files", connection)

  Dim rdr As GoogleDriveDataReader = cmd.ExecuteReader()

  While rdr.Read()
    Console.WriteLine([String].Format(vbTab & "{0} --> " & vbTab & vbTab & "{1}", rdr("Id"), rdr("Name")))
  End While
End Using