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Esempio: creare, recuperare, aggiornare ed eliminare i record (associazione anticipata)

 

Data di pubblicazione: gennaio 2017

Si applica a: Dynamics 365 (online), Dynamics 365 (on-premises), Dynamics CRM 2016, Dynamics CRM Online

Questo codice di esempio è per Microsoft Dynamics 365 (online e locale).Scarica il pacchetto SDK di Microsoft Dynamics CRM. È disponibile nel percorso seguente nel pacchetto di download:

SampleCode\CS\GeneralProgramming\EarlyBound\CRUDOperations.cs

Requisiti

Per ulteriori informazioni sui requisiti per l'esecuzione del codice di esempio fornito nell'SDK, vedi Utilizzare il codice di esempio e dell'helper.

Dimostra

In questo esempio viene illustrato come creare, recuperare, aggiornare ed eliminare un account tramite l'associazione ritardata. In questo esempio vengono utilizzati i seguenti metodi comuni:

Esempio


using System;
using System.ServiceModel;
using System.ServiceModel.Description;

// These namespaces are found in the Microsoft.Xrm.Sdk.dll assembly
// located in the SDK\bin folder of the SDK download.
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;
using Microsoft.Xrm.Sdk.Client;

namespace Microsoft.Crm.Sdk.Samples
{
    /// <summary>
    /// Demonstrates how to do basic entity operations like create, retrieve,
    /// update, and delete.</summary>
    /// <remarks>
    /// At run-time, you will be given the option to delete all the
    /// database records created by this program.</remarks>
    public class CRUDOperations
    {
        #region Class Level Members

        private Guid _accountId;
        private Guid _parentAccountId;
        private OrganizationServiceProxy _serviceProxy;

        #endregion Class Level Members

        #region How To Sample Code
        /// <summary>
        /// This method first connects to the Organization service. Afterwards,
        /// basic create, retrieve, update, and delete entity operations are performed.
        /// </summary>
        /// <param name="serverConfig">Contains server connection information.</param>
        /// <param name="promptforDelete">When True, the user will be prompted to delete all
        /// created entities.</param>
        public void Run(ServerConnection.Configuration serverConfig, bool promptforDelete)
        {
            try
            {
                // Connect to the Organization service. 
                // The using statement assures that the service proxy will be properly disposed.
                using (_serviceProxy = new OrganizationServiceProxy(serverConfig.OrganizationUri, serverConfig.HomeRealmUri,serverConfig.Credentials, serverConfig.DeviceCredentials))
                {
                    // This statement is required to enable early-bound type support.
                    _serviceProxy.EnableProxyTypes();

                    CreateRequiredRecords();

                    // Instantiate an account object.
                    // See the Entity Metadata topic in the SDK documentation to determine 
                    // which attributes must be set for each entity.
                    Account account = new Account { Name = "Fourth Coffee" };

                    // Create an account record named Fourth Coffee.
                    _accountId = _serviceProxy.Create(account);
                    Console.Write("{0} {1} created, ", account.LogicalName, account.Name);

                    // Retrieve the account containing several of its attributes.
                    ColumnSet cols = new ColumnSet(
                        new String[] { "name", "address1_postalcode", "lastusedincampaign", "versionnumber" });

                    Account retrievedAccount = (Account)_serviceProxy.Retrieve("account", _accountId, cols);
                    Console.Write("retrieved ");

                    // Retrieve version number of the account. Shows BigInt attribute usage.
                    long? versionNumber = retrievedAccount.VersionNumber;

                    if (versionNumber != null)
                        Console.WriteLine("version # {0}, ", versionNumber);

                    // Update the postal code attribute.
                    retrievedAccount.Address1_PostalCode = "98052";

                    // The address 2 postal code was set accidentally, so set it to null.
                    retrievedAccount.Address2_PostalCode = null;

                    // Shows usage of option set (picklist) enumerations defined in OptionSets.cs.
                    retrievedAccount.Address1_AddressTypeCode = new OptionSetValue((int)AccountAddress1_AddressTypeCode.Primary);
                    retrievedAccount.Address1_ShippingMethodCode = new OptionSetValue((int)AccountAddress1_ShippingMethodCode.DHL);
                    retrievedAccount.IndustryCode = new OptionSetValue((int)AccountIndustryCode.AgricultureandNonpetrolNaturalResourceExtraction);

                    // Shows use of a Money value.
                    retrievedAccount.Revenue = new Money(5000000);

                    // Shows use of a Boolean value.
                    retrievedAccount.CreditOnHold = false;

                    // Shows use of EntityReference.
                    retrievedAccount.ParentAccountId = new EntityReference(Account.EntityLogicalName, _parentAccountId);

                    // Shows use of Memo attribute.
                    retrievedAccount.Description = "Account for Fourth Coffee.";

                    // Update the account record.
                    _serviceProxy.Update(retrievedAccount);
                    Console.WriteLine("and updated.");                    

                    DeleteRequiredRecords(promptforDelete);
                }
            }

            // Catch any service fault exceptions that Microsoft Dynamics CRM throws.
            catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault>)
            {
                // You can handle an exception here or pass it back to the calling method.
                throw;
            }
        }

        /// <summary>
        /// Creates any entity records that this sample requires.
        /// </summary>
        public void CreateRequiredRecords()
        {
            // For this sample, all required entities are created in the Run() method.
            Account account = new Account { Name = "Sample Parent Account" };
            _parentAccountId = _serviceProxy.Create(account);
        }

        /// <summary>
        /// Deletes any entity records that were created for this sample.
        /// <param name="prompt">Indicates whether to prompt the user 
        /// to delete the records created in this sample.</param>
        /// </summary>
        public void DeleteRequiredRecords(bool prompt)
        {
            bool deleteRecords = true;

            if (prompt)
            {
                Console.WriteLine("\nDo you want these entity records deleted? (y/n) [y]: ");
                String answer = Console.ReadLine();

                deleteRecords = (answer.StartsWith("y") || answer.StartsWith("Y") || answer == String.Empty);
            }

            if (deleteRecords)
            {
                _serviceProxy.Delete(Account.EntityLogicalName, _accountId);
                _serviceProxy.Delete(Account.EntityLogicalName, _parentAccountId);
                Console.WriteLine("Entity records have been deleted.");
            }
        }

        #endregion How To Sample Code

        #region Main method

        /// <summary>
        /// Standard Main() method used by most SDK samples.
        /// </summary>
        /// <param name="args"></param>
        static public void Main(string[] args)
        {
            try
            {
                // Obtain the target organization's Web address and client logon 
                // credentials from the user.
                ServerConnection serverConnect = new ServerConnection();
                ServerConnection.Configuration config = serverConnect.GetServerConfiguration();

                CRUDOperations app = new CRUDOperations();
                app.Run( config, true );
            }

            catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> ex)
            {
                Console.WriteLine("The application terminated with an error.");
                Console.WriteLine("Timestamp: {0}", ex.Detail.Timestamp);
                Console.WriteLine("Code: {0}", ex.Detail.ErrorCode);
                Console.WriteLine("Message: {0}", ex.Detail.Message);
                Console.WriteLine("Inner Fault: {0}",
                    null == ex.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
            }
            catch (System.TimeoutException ex)
            {
                Console.WriteLine("The application terminated with an error.");
                Console.WriteLine("Message: {0}", ex.Message);
                Console.WriteLine("Stack Trace: {0}", ex.StackTrace);
                Console.WriteLine("Inner Fault: {0}",
                    null == ex.InnerException.Message ? "No Inner Fault" : ex.InnerException.Message);
            }
            catch (System.Exception ex)
            {
                Console.WriteLine("The application terminated with an error.");
                Console.WriteLine(ex.Message);

                // Display the details of the inner exception.
                if (ex.InnerException != null)
                {
                    Console.WriteLine(ex.InnerException.Message);

                    FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> fe = ex.InnerException
                        as FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault>;
                    if (fe != null)
                    {
                        Console.WriteLine("Timestamp: {0}", fe.Detail.Timestamp);
                        Console.WriteLine("Code: {0}", fe.Detail.ErrorCode);
                        Console.WriteLine("Message: {0}", fe.Detail.Message);
                        Console.WriteLine("Trace: {0}", fe.Detail.TraceText);
                        Console.WriteLine("Inner Fault: {0}",
                            null == fe.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
                    }
                }
            }
            // Additional exceptions to catch: SecurityTokenValidationException, ExpiredSecurityTokenException,
            // SecurityAccessDeniedException, MessageSecurityException, and SecurityNegotiationException.

            finally
            {
                Console.WriteLine("Press <Enter> to exit.");
                Console.ReadLine();
            }
        }
        #endregion Main method
    }
}

Vedere anche

IOrganizationService
Utilizzare le classi di entità con associazione anticipata nel codice
Esempio: associare record (con associazione anticipata)
Esempio: creazione, recupero, aggiornamento ed eliminazione (associazione ritardata)

Microsoft Dynamics 365

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