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Whether the error happened due to the sender's fault.
Namespace: Amazon.SQS.Model
Assembly: AWSSDK.dll
Version: 0.0.3.0
public Boolean SenderFault { get; set; }
This example shows how to delete messages in batch.
var client = new AmazonSQSClient();
var request = new ReceiveMessageRequest
{
  AttributeNames = new List<string>() { "All" },
  MaxNumberOfMessages = 5,
  QueueUrl = "https://sqs.us-east-1.amazonaws.com/80398EXAMPLE/MyTestQueue",
  VisibilityTimeout = (int)TimeSpan.FromMinutes(10).TotalSeconds,
  WaitTimeSeconds = (int)TimeSpan.FromSeconds(5).TotalSeconds
};
var response = client.ReceiveMessage(request);
var batchEntries = new List<DeleteMessageBatchRequestEntry>();
if (response.Messages.Count > 0)
{
  foreach (var message in response.Messages)
  {
    var batchEntry = new DeleteMessageBatchRequestEntry
    {
      Id = message.MessageId,
      ReceiptHandle = message.ReceiptHandle
    };
    batchEntries.Add(batchEntry);
  }
  var delRequest = new DeleteMessageBatchRequest
  {
    Entries = batchEntries,
    QueueUrl = "https://sqs.us-east-1.amazonaws.com/80398EXAMPLE/MyTestQueue"
  };
  var delResponse = client.DeleteMessageBatch(delRequest);
  if (delResponse.Failed.Count > 0)
  {
    Console.WriteLine("Failed deletions:");
    foreach (var failure in delResponse.Failed)
    {
      Console.WriteLine("  For ID '" + failure.Id + "': ");
      Console.WriteLine("    Code = " + failure.Code);
      Console.WriteLine("    Message = " + failure.Message);
      Console.WriteLine("    Sender's fault? = " + failure.SenderFault);
    }
  }
  if (delResponse.Successful.Count > 0)
  {
    Console.WriteLine("Successful deletions:");
    foreach (var success in delResponse.Successful)
    {
      Console.WriteLine("  ID '" + success.Id + "'");
    }
  }
}
else
{
  Console.WriteLine("No messages to delete.");
}
      
      
.NET Framework: 
Supported in: 4.5, 4.0, 3.5
.NET for Windows Store apps: 
Supported in: Windows 8.1, Windows 8
.NET for Windows Phone: 
Supported in: Windows Phone 8.1, Windows Phone 8