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Sample: Create, retrieve, update, and delete an email attachment

Applies To: Microsoft Dynamics CRM 2013, Microsoft Dynamics CRM Online

This sample code is for Microsoft Dynamics CRM 2013 and Microsoft Dynamics CRM Online. Download the Microsoft Dynamics CRM SDK package. It can be found in the following location in the download package:

SampleCode\CS\BusinessDataModel\Activities\CRUDEmailAttachments.cs

SampleCode\VB\BusinessDataModel\Activities\CRUDEmailAttachments.vb

Requirements

For more information about the requirements for running the sample code provided in this SDK, see Use the sample and helper code.

Demonstrates

This sample shows how to create, retrieve, update, and delete email attachments using the following methods:

Example


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

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


// This namespace is found in Microsoft.Crm.Sdk.Proxy.dll assembly
// found in the SDK\bin folder.
using Microsoft.Crm.Sdk.Messages;

namespace Microsoft.Crm.Sdk.Samples
{
    public class CRUDEmailAttachments
    {
        #region Class Level Members


        /// <summary>
        /// Stores the organization service proxy.
        /// </summary>
        private OrganizationServiceProxy _serviceProxy;

        // Define the IDs needed for this sample.
        private Guid _emailId;
        private Guid[] _emailAttachmentId = new Guid[3];
        

        #endregion Class Level Members

        #region How To Sample Code
        /// <summary>
        /// Create, Retrieve, Update and Delete an e-mail attachment.
        /// <param name="serverConfig">Contains server connection information.</param>
        /// <param name="promptforDelete">When True, the user will be prompted to delete all
        /// created entities.</param>
        /// </summary>
        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 = ServerConnection.GetOrganizationProxy(serverConfig))
                {
                    // This statement is required to enable early-bound type support.
                    _serviceProxy.EnableProxyTypes();

                    CreateRequiredRecords();


                    // Create three e-mail attachments
                    for (int i = 0; i < 3; i++)
                    {
                        ActivityMimeAttachment _sampleAttachment = new ActivityMimeAttachment
                        {
                            ObjectId = new EntityReference(Email.EntityLogicalName, _emailId),
                            ObjectTypeCode = Email.EntityLogicalName,
                            Subject = String.Format("Sample Attachment {0}", i),
                            Body = System.Convert.ToBase64String(
                                    new ASCIIEncoding().GetBytes("Example Attachment")),
                            FileName = String.Format("ExampleAttachment{0}.txt", i)
                        };

                        _emailAttachmentId[i] = _serviceProxy.Create(_sampleAttachment);
                    }

                    Console.WriteLine("Created three e-mail attachments for the e-mail activity.");

                    // Retrieve an attachment including its id, subject, filename and body.
                    ActivityMimeAttachment _singleAttachment =
                        (ActivityMimeAttachment)_serviceProxy.Retrieve(
                                                    ActivityMimeAttachment.EntityLogicalName,
                                                    _emailAttachmentId[0],
                                                    new ColumnSet("activitymimeattachmentid",
                                                        "subject",
                                                        "filename",
                                                        "body"));

                    Console.WriteLine("Retrieved an email attachment, {0}.", _singleAttachment.FileName);

                    // Update attachment
                    _singleAttachment.FileName = "ExampleAttachmentUpdated.txt";
                    _serviceProxy.Update(_singleAttachment);

                    Console.WriteLine("Updated the retrieved e-mail attachment to {0}.", _singleAttachment.FileName);

                    // Retrieve all attachments associated with the email activity.
                    QueryExpression _attachmentQuery = new QueryExpression
                    {
                        EntityName = ActivityMimeAttachment.EntityLogicalName,
                        ColumnSet = new ColumnSet("activitymimeattachmentid"),
                        Criteria = new FilterExpression
                        {
                            Conditions =
                        {
                            new ConditionExpression
                            {
                                AttributeName = "objectid",
                                Operator = ConditionOperator.Equal,
                                Values = {_emailId}
                            },
                            new ConditionExpression
                            {
                                AttributeName = "objecttypecode",
                                Operator = ConditionOperator.Equal,
                                Values = {Email.EntityLogicalName}
                            }
                        }
                        }
                    };

                    EntityCollection results = _serviceProxy.RetrieveMultiple(
                        _attachmentQuery);

                    Console.WriteLine("Retrieved all the e-mail attachments.");


                    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>
        /// This method creates any entity records that this sample requires.
        /// Creates the email activity.
        /// </summary>
        public void CreateRequiredRecords()
        {
            // Create Email Activity
            Email email = new Email
            {
                Subject = "This is an example email",
                ActivityId = Guid.NewGuid()
            };

            _emailId = _serviceProxy.Create(email);

            Console.WriteLine("An e-mail activity is created.");
        }


        /// <summary>
        /// Deletes the custom entity record that was created for this sample.
        /// <param name="prompt">Indicates whether to prompt the user 
        /// to delete the entity 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)");
                String answer = Console.ReadLine();

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

            if (deleteRecords)
            {
                for (int j = 0; j < 3; j++)
                {
                    _serviceProxy.Delete(ActivityMimeAttachment.EntityLogicalName, _emailAttachmentId[j]);
                }
                _serviceProxy.Delete(Email.EntityLogicalName, _emailId);                                   
                Console.WriteLine("Entity records have been deleted.");
            }
        }

        #endregion How To Sample Code

        #region Main
        /// <summary>
        /// Main. Runs the sample and provides error output.
        /// <param name="args">Array of arguments to Main method.</param>
        /// </summary>
        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();

                CRUDEmailAttachments app = new CRUDEmailAttachments();
                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("Plugin Trace: {0}", ex.Detail.TraceText);
                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("Plugin 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

    }
}

See Also

Microsoft Dynamics CRM 2013 and Microsoft Dynamics CRM Online
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