Connect to Amazon DynamoDB Data from PowerBuilder via ADO.NET

This article demonstrates using the CData ADO.NET Provider for Amazon DynamoDB in PowerBuilder, showcasing the ease of use and compatibility of these standards-based controls across various platforms and development technologies that support Microsoft .NET, including Appeon PowerBuilder.

This article shows how to create a basic PowerBuilder application that uses the CData ADO.NET Provider for Amazon DynamoDB to perform reads and writes.

1. In a new WPF Window Application solution, add all the Visual Controls needed for the connection properties. Below is a typical connection string:

   Access Key=xxx;Secret Key=xxx;Domain=amazonaws.com;Region=OREGON;

   The connection to Amazon DynamoDB is made using your AccessKey, SecretKey, and optionally your Domain and Region. Your AccessKey and SecretKey can be obtained on the security credentials page for your Amazon Web Services account. Your Region will be displayed in the upper left-hand corner when you are logged into DynamoDB.

2. Add the DataGrid control from the .NET controls.
3. Configure the columns of the DataGrid control. Below are several columns from the Account table:

   <DataGrid AutoGenerateColumns="False" Margin="13,249,12,14" Name="datagrid1" TabIndex="70" ItemsSource="{Binding}">
   <DataGrid.Columns>
    <DataGridTextColumn x:Name="idColumn" Binding="{Binding Path=Id}" Header="Id" Width="SizeToHeader" />
    <DataGridTextColumn x:Name="nameColumn" Binding="{Binding Path=Industry}" Header="Industry" Width="SizeToHeader" />
   		...
   	</DataGrid.Columns>
   </DataGrid>
   

4. Add a reference to the CData ADO.NET Provider for Amazon DynamoDB assembly.

Connect the DataGrid

Once the visual elements have been configured, you can use standard ADO.NET objects like Connection, Command, and DataAdapter to populate a DataTable with the results of an SQL query:

System.Data.CData.AmazonDynamoDB.AmazonDynamoDBConnection conn 
conn = create System.Data.CData.AmazonDynamoDB.AmazonDynamoDBConnection(connectionString)

System.Data.CData.AmazonDynamoDB.AmazonDynamoDBCommand comm 
comm = create System.Data.CData.AmazonDynamoDB.AmazonDynamoDBCommand(command, conn)

System.Data.DataTable table
table = create System.Data.DataTable

System.Data.CData.AmazonDynamoDB.AmazonDynamoDBDataAdapter dataAdapter
dataAdapter = create System.Data.CData.AmazonDynamoDB.AmazonDynamoDBDataAdapter(comm)
dataAdapter.Fill(table)	
datagrid1.ItemsSource=table.DefaultView

The code above can be used to bind data from the specified query to the DataGrid.