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07_DeletingItem.cs

07_DeletingItem.cs demonstrates how to

/** * Copyright 2010-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved. * * This file is licensed under the Apache License, Version 2.0 (the "License"). * You may not use this file except in compliance with the License. A copy of * the License is located at * * http://aws.amazon.com/apache2.0/ * * This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR * CONDITIONS OF ANY KIND, either express or implied. See the License for the * specific language governing permissions and limitations under the License. */ using System; using System.Threading.Tasks; using Amazon.DynamoDBv2.DocumentModel; namespace DynamoDB_intro { public static partial class Ddb_Intro { /*-------------------------------------------------------------------------- * DeletingItem_async *--------------------------------------------------------------------------*/ public static async Task<bool> DeletingItem_async( Table table, int year, string title, Expression condition=null ) { Document deletedItem = null; operationSucceeded = false; operationFailed = false; // Create Primitives for the HASH and RANGE portions of the primary key Primitive hash = new Primitive(year.ToString(), true); Primitive range = new Primitive(title, false); DeleteItemOperationConfig deleteConfig = new DeleteItemOperationConfig( ); deleteConfig.ConditionalExpression = condition; deleteConfig.ReturnValues = ReturnValues.AllOldAttributes; Console.WriteLine( " -- Trying to delete the {0} movie \"{1}\"...", year, title ); try { Task<Document> delItem = table.DeleteItemAsync( hash, range, deleteConfig ); deletedItem = await delItem; } catch( Exception ex ) { Console.WriteLine( " FAILED to delete the movie item, for this reason:\n {0}\n", ex.Message ); operationFailed = true; return ( false ); } Console.WriteLine( " -- SUCCEEDED in deleting the movie record that looks like this:\n" + deletedItem.ToJsonPretty( ) ); operationSucceeded = true; return ( true ); } }

Sample Details

Service: dynamodb

Last tested:

Author: AWS

Type: full-example

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