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

Using the ODataDataAdapter

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

The following example selects the Id and FullName columns of the Lead table:

C#

string connectionString = "User=myuseraccount;Password=mypassword;URL=http://myserver/myOrgRoot;";

using (ODataConnection connection = new ODataConnection(connectionString)) {
  ODataDataAdapter dataAdapter = new ODataDataAdapter(
  "SELECT Id, FullName FROM Lead", connection);

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

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

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

VB.NET

Dim connectionString As String = "User=myuseraccount;Password=mypassword;URL=http://myserver/myOrgRoot;"

Using connection As New ODataConnection(connectionString)
  Dim dataAdapter As New ODataDataAdapter("SELECT Id, FullName FROM Lead", connection)

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

  Console.WriteLine("Contents of Lead.")

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