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

Using the ExchangeDataAdapter

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

The following example selects the LastModifiedByName and GivenName columns of the Contacts table:

C#

string connectionString = "User='[email protected]';Password='myPassword';Server='https://outlook.office365.com/EWS/Exchange.asmx';Platform='Exchange_Online';Schema='EWS';";

using (ExchangeConnection connection = new ExchangeConnection(connectionString)) {
  ExchangeDataAdapter dataAdapter = new ExchangeDataAdapter(
  "SELECT LastModifiedByName, GivenName FROM Contacts", connection);

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

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

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

VB.NET

Dim connectionString As String = "User='[email protected]';Password='myPassword';Server='https://outlook.office365.com/EWS/Exchange.asmx';Platform='Exchange_Online';Schema='EWS';"

Using connection As New ExchangeConnection(connectionString)
  Dim dataAdapter As New ExchangeDataAdapter("SELECT LastModifiedByName, GivenName FROM Contacts", connection)

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

  Console.WriteLine("Contents of Contacts.")

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