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

Using the AmazonDynamoDBDataAdapter

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

The following example selects the Id and Name columns of the Account table:

C#

string connectionString = "AWS Access Key=xxx;AWS Secret Key=xxx;Domain=amazonaws.com;AWS Region=OREGON;";

using (AmazonDynamoDBConnection connection = new AmazonDynamoDBConnection(connectionString)) {
  AmazonDynamoDBDataAdapter dataAdapter = new AmazonDynamoDBDataAdapter(
  "SELECT Id, Name FROM Account", connection);

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

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

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

VB.NET

Dim connectionString As String = "AWS Access Key=xxx;AWS Secret Key=xxx;Domain=amazonaws.com;AWS Region=OREGON;"

Using connection As New AmazonDynamoDBConnection(connectionString)
  Dim dataAdapter As New AmazonDynamoDBDataAdapter("SELECT Id, Name FROM Account", connection)

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

  Console.WriteLine("Contents of Account.")

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