AWS SDK Version 3 for .NET
API Reference

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Deletes a single item in a table by primary key. You can perform a conditional delete operation that deletes the item if it exists, or if it has an expected attribute value.

In addition to deleting an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.

Unless you specify conditions, the DeleteItem is an idempotent operation; running it multiple times on the same item or attribute does not result in an error response.

Conditional deletes are useful for deleting items only if specific conditions are met. If those conditions are met, DynamoDB performs the delete. Otherwise, the item is not deleted.

Note:

For PCL and Unity this operation is only available in asynchronous form. Please refer to DeleteItemAsync.

Namespace: Amazon.DynamoDBv2
Assembly: AWSSDK.DynamoDBv2.dll
Version: 3.x.y.z

Syntax

C#
public abstract DeleteItemResponse DeleteItem(
         String tableName,
         Dictionary<String, AttributeValue> key,
         ReturnValue returnValues
)
Parameters
tableName
Type: System.String

The name of the table from which to delete the item.

key
Type: System.Collections.Generic.Dictionary<System.String, Amazon.DynamoDBv2.Model.AttributeValue>

A map of attribute names to AttributeValue objects, representing the primary key of the item to delete. For the primary key, you must provide all of the attributes. For example, with a simple primary key, you only need to provide a value for the partition key. For a composite primary key, you must provide values for both the partition key and the sort key.

returnValues
Type: Amazon.DynamoDBv2.ReturnValue

Use ReturnValues if you want to get the item attributes as they appeared before they were deleted. For DeleteItem, the valid values are: NONE - If ReturnValues is not specified, or if its value is NONE, then nothing is returned. (This setting is the default for ReturnValues.) ALL_OLD - The content of the old item is returned. The ReturnValues parameter is used by several DynamoDB operations; however, DeleteItem does not recognize any values other than NONE or ALL_OLD.

Return Value
The response from the DeleteItem service method, as returned by DynamoDB.

Exceptions

ExceptionCondition
ConditionalCheckFailedException A condition specified in the operation could not be evaluated.
InternalServerErrorException An error occurred on the server side.
ItemCollectionSizeLimitExceededException An item collection is too large. This exception is only returned for tables that have one or more local secondary indexes.
ProvisionedThroughputExceededException Your request rate is too high. The AWS SDKs for DynamoDB automatically retry requests that receive this exception. Your request is eventually successful, unless your retry queue is too large to finish. Reduce the frequency of requests and use exponential backoff. For more information, go to Error Retries and Exponential Backoff in the Amazon DynamoDB Developer Guide.
ResourceNotFoundException The operation tried to access a nonexistent table or index. The resource might not be specified correctly, or its status might not be ACTIVE.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

Unity:
Supported Versions: 4.6 and above
Supported Platforms: Android, iOS, Standalone

See Also