// Create a client
AmazonDynamoDBClient client = new AmazonDynamoDBClient();

// Define scan conditions
Dictionary<string, Condition> conditions = new Dictionary<string, Condition>();

// Pages attributes must be greater-than the numeric value "200"
Condition pagesCondition = new Condition();
pagesCondition.WithComparisonOperator("GT");
pagesCondition.WithAttributeValueList(new AttributeValue { N = "200" });
conditions["Pages"] = pagesCondition;

// Setup 10 simultaneous threads, each thread calling Scan operation
// with its own segment value.
int totalSegments = 10;
Parallel.For(0, totalSegments, segment =>
{
    // Define marker variable
    Dictionary<string, AttributeValue> startKey = null;

    do
    {
        // Create Scan request
        ScanRequest request = new ScanRequest
        {
            TableName = "SampleTable",
            ExclusiveStartKey = startKey,
            ScanFilter = conditions,
            // Total segments to split the table into
            TotalSegments = totalSegments,
            // Current segment to scan
            Segment = segment
        };

        // Issue request
        ScanResult result = client.Scan(request).ScanResult;

        // Write returned items to file
        string path = string.Format("ParallelScan-{0}-of-{1}.txt", totalSegments, segment);
        List<Dictionary<string, AttributeValue>> items = result.Items;
        using (Stream stream = File.OpenWrite(path))
        using (StreamWriter writer = new StreamWriter(stream))
        {
            foreach (Dictionary<string, AttributeValue> item in items)
            {
                writer.WriteLine("Item:");
                foreach (var keyValuePair in item)
                {
                    writer.WriteLine("{0} : S={1}, N={2}, SS=[{3}], NS=[{4}]",
                        keyValuePair.Key,
                        keyValuePair.Value.S,
                        keyValuePair.Value.N,
                        string.Join(", ", keyValuePair.Value.SS ?? new List<string>()),
                        string.Join(", ", keyValuePair.Value.NS ?? new List<string>()));
                }
            }
        }

        // Set marker variable
        startKey = result.LastEvaluatedKey;
    } while (startKey != null);
});