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Sample: Collaborate with activity feeds

 

Applies To: Dynamics CRM 2015

This sample code is for Microsoft Dynamics CRM 2015 and Microsoft Dynamics CRM Online 2015 Update. Download the Microsoft Dynamics CRM SDK package. It can be found in the following location in the download package:

SampleCode\CS\BusinessDataModel\ActivityFeeds\WorkingWithActivityFeeds.cs

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 posts with comments and mentions and how to follow Microsoft Dynamics CRM records. It also demonstrates how to retrieve information for the personal and record walls.

Example


using System;
using System.Collections.Generic;
using System.Linq;
using System.ServiceModel;
using System.Threading;
using Microsoft.Crm.Sdk.Messages;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Client;
using Microsoft.Xrm.Sdk.Query;

namespace Microsoft.Crm.Sdk.Samples
{
    /// <summary>
    /// Demonstrates how to work with the new Activity Feeds entities, including Post,
    /// PostFollow, and PostComment.</summary>
    /// <remarks>
    /// At run-time, you will be given the option to delete all the
    /// database records created by this program.</remarks>
    public class WorkingWithActivityFeeds
    {
        #region Local Sample Types
        private class InvalidSampleExecutionException : Exception
        {
            public InvalidSampleExecutionException(String message)
                : base(message)
            {
            }
        }
        #endregion Local Sample Types

        #region Class Level Members
        private OrganizationServiceProxy _serviceProxy;
        private ServiceContext _serviceContext;
        private msdyn_PostConfig _originalLeadConfig;
        private msdyn_PostConfig _originalSystemUserConfig;
        private msdyn_PostConfig _systemuserConfig;
        private msdyn_PostConfig _leadConfig;
        private List<msdyn_PostRuleConfig> _postRuleConfigs =
            new List<msdyn_PostRuleConfig>();
        private Lead _lead1;
        private Lead _lead2;
        private Lead _lead3;
        private PostFollow _follow1;
        private PostFollow _follow2;
        private PostFollow _follow3;
        private List<EntityReference> _generatedEntities = new List<EntityReference>();
        private Post _post1;
        private Post _post2;
        private Post _post3;
        private Post _post4;
        private Post _leadPost1;
        #endregion Class Level Members

        #region How To Sample Code

        /// <summary>
        /// This method first connects to the Organization service. Afterwards, activity
        /// feeds are enabled, posts and comments are made to entity records and user
        /// walls and auto post rules are demonstrated.
        /// </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)
        {
            using (_serviceProxy = new OrganizationServiceProxy(serverConfig.OrganizationUri, serverConfig.HomeRealmUri,serverConfig.Credentials, serverConfig.DeviceCredentials))
            {
                // This statement is required to enable early-bound type support.
                _serviceProxy.EnableProxyTypes();
                _serviceContext = new ServiceContext(_serviceProxy);

                try
                {
                    ConfigureActivityFeeds();
                    PostToRecordWalls();
                    PostToPersonalWalls();
                    ShowRecordWalls();
                    DeleteRequiredRecords(promptForDelete);
                }
                catch (InvalidSampleExecutionException e)
                {
                    Console.WriteLine(e.Message);
                    DeleteRequiredRecords(promptForDelete);
                }
            }
        }

        private void ConfigureActivityFeeds()
        {
            Console.WriteLine("== Configuring Activity Feeds ==");

            // Get the original systemuser config in order to keep a copy for reverting
            // after the sample has completed.
            _originalSystemUserConfig =
                (from c in _serviceContext.msdyn_PostConfigSet
                 where c.msdyn_EntityName == SystemUser.EntityLogicalName
                 select new msdyn_PostConfig
                 {
                     msdyn_PostConfigId = c.msdyn_PostConfigId,
                     msdyn_ConfigureWall = c.msdyn_ConfigureWall,
                     msdyn_EntityName = c.msdyn_EntityName
                 }).FirstOrDefault();

            // Retrieve or Create an instance of msdyn_PostConfig to enable activity
            // feeds for leads (or make sure they are already enabled).
            // If a new msdyn_PostConfig record gets created, activity feeds for
            // systemusers will be enabled automatically.
            _leadConfig =
                (from c in _serviceContext.msdyn_PostConfigSet
                 where c.msdyn_EntityName == Lead.EntityLogicalName
                 select new msdyn_PostConfig
                 {
                     msdyn_PostConfigId = c.msdyn_PostConfigId,
                     msdyn_EntityName = c.msdyn_EntityName,
                     msdyn_ConfigureWall = c.msdyn_ConfigureWall
                 }).FirstOrDefault();

            if (_leadConfig == null)
            {
                // Create the configuration record for leads.
                _leadConfig = new msdyn_PostConfig
                {
                    msdyn_EntityName = Lead.EntityLogicalName,
                    msdyn_ConfigureWall = true
                };

                _serviceContext.AddObject(_leadConfig);
                _serviceContext.SaveChanges();
                Console.WriteLine(
                    "  The lead activity feed wall configuration was created.");
            }
            else
            {
                // Store the original Lead Config so that we can revert changes later.
                _originalLeadConfig = CloneRelevantConfiguration(_leadConfig);

                if (!_leadConfig.msdyn_ConfigureWall.HasValue
                    || !_leadConfig.msdyn_ConfigureWall.Value)
                {
                    _leadConfig.msdyn_ConfigureWall = true;

                    _serviceContext.UpdateObject(_leadConfig);
                    _serviceContext.SaveChanges();
                    Console.WriteLine(
                        "  The lead activity feed wall was enabled.");
                }
            }

            // Get the original systemuser config in order to keep a copy for reverting
            // after the sample has completed.
            _systemuserConfig =
                (from c in _serviceContext.msdyn_PostConfigSet
                 where c.msdyn_EntityName == SystemUser.EntityLogicalName
                 select new msdyn_PostConfig
                 {
                     msdyn_PostConfigId = c.msdyn_PostConfigId,
                     msdyn_ConfigureWall = c.msdyn_ConfigureWall,
                     msdyn_EntityName = c.msdyn_EntityName
                 }).FirstOrDefault();

            // Ensure that the wall for systemuser is enabled if there is already a
            // systemuser configuration defined.
            if (_systemuserConfig != null &amp;&amp;
                (!_systemuserConfig.msdyn_ConfigureWall.HasValue
                || !_systemuserConfig.msdyn_ConfigureWall.Value))
            {
                _systemuserConfig.msdyn_ConfigureWall = true;

                _serviceContext.UpdateObject(_systemuserConfig);
                _serviceContext.SaveChanges();
                Console.WriteLine("  The systemuser activity feed wall was enabled.");
            }

            // Publish the lead and systemuser entities so that they will have record
            // walls on their forms.
            PublishSystemUserAndLead();

            // Activate the auto post rule configurations. New Lead qualified should be
            // activated automatically when the rule is generated by CRM.
            var leadRules =
                (from r in _serviceContext.msdyn_PostRuleConfigSet
                 where r.msdyn_RuleId == "LeadQualify.Yes.Rule"
                    || r.msdyn_RuleId == "LeadCreate.Rule"
                 select r).ToList();
            if (leadRules.Count() != 2)
            {
                throw new InvalidSampleExecutionException(
                "  One or both of the lead config rules do not exist. This can be fixed by deleting the lead post config.");
            }
            foreach (var configRule in leadRules)
            {
                _postRuleConfigs.Add(configRule);
                ActivateRuleConfig(configRule);
            }
        }

        private void PostToRecordWalls()
        {
            Console.WriteLine("\r\n== Working with Record Walls ==");
            // Create the leads.
            CreateRequiredRecords();

            // Follow each of the leads.
            _follow1 = new PostFollow
            {
                RegardingObjectId = _lead1.ToEntityReference()
            };
            _serviceContext.AddObject(_follow1);

            _follow2 = new PostFollow
            {
                RegardingObjectId = _lead2.ToEntityReference()
            };
            _serviceContext.AddObject(_follow2);

            _follow3 = new PostFollow
            {
                RegardingObjectId = _lead3.ToEntityReference()
            };
            _serviceContext.AddObject(_follow3);

            _serviceContext.SaveChanges();
            Console.WriteLine("  The 3 leads are now followed.");

            // Create posts, mentions, and comments related to the leads.
            // Create a post related to lead 1 with a mention and a comment.
            _leadPost1 = new Post
            {
                RegardingObjectId = _lead1.ToEntityReference(),
                Source = new OptionSetValue((int)PostSource.AutoPost),
                // Include a mention in the post text.
                Text = String.Format("This lead is similar to @[{0},{1},\"{2}\"]",
                    Lead.EntityTypeCode, _lead2.Id, _lead2.FullName)
            };

            _serviceContext.AddObject(_leadPost1);
            _serviceContext.SaveChanges();
            Console.WriteLine("  Post 1 has been created.");

            // It isn't necessary to keep track of the comment because the comment will
            // be deleted when its parent post is deleted.
            var comment1 = new PostComment
            {
                PostId = _leadPost1.ToEntityReference(),
                Text = "Sample comment 1"
            };
            _serviceContext.AddObject(comment1);
            _serviceContext.SaveChanges();
            Console.WriteLine("  Comment 1 has been created.");

            // Create a post related to lead 2 with three comments.
            var post2 = new Post
            {
                RegardingObjectId = _lead2.ToEntityReference(),
                Source = new OptionSetValue((int)PostSource.ManualPost),
                Text = "This lead was created for a sample."
            };

            _serviceContext.AddObject(post2);
            _serviceContext.SaveChanges();
            Console.WriteLine("  Post 2 has been created.");

            var comment2 = new PostComment
            {
                PostId = post2.ToEntityReference(),
                Text = "Sample comment 2"
            };

            var comment3 = new PostComment
            {
                PostId = post2.ToEntityReference(),
                Text = "Sample comment 3"
            };

            var comment4 = new PostComment
            {
                PostId = post2.ToEntityReference(),
                Text = "Sample comment 4"
            };

            _serviceContext.AddObject(comment2);
            _serviceContext.AddObject(comment3);
            _serviceContext.AddObject(comment4);
            _serviceContext.SaveChanges();
            Console.WriteLine("  Comments 2, 3, and 4 have been created.");

            // Qualify some leads.  Since there is an active post rule config for
            // qualification of a lead, this should generate an auto post to the record
            // wall of each lead that is qualified.

            // Qualify lead 2.
            var qualifyLead2Request = new QualifyLeadRequest
            {
                CreateAccount = true,
                LeadId = _lead2.ToEntityReference(),
                Status = new OptionSetValue((int)lead_statuscode.Qualified)
            };

            var qualifyLead2Response = (QualifyLeadResponse)_serviceProxy.Execute(
                qualifyLead2Request);

            // Store the generated Account to delete it later.
            foreach (var entityRef in qualifyLead2Response.CreatedEntities)
            {
                _generatedEntities.Add(entityRef);
            }

            Console.WriteLine("  Lead 2 was qualified.");

            // Qualify lead 3.
            var qualifyLead3Request = new QualifyLeadRequest
            {
                CreateAccount = true,
                LeadId = _lead3.ToEntityReference(),
                Status = new OptionSetValue((int)lead_statuscode.Qualified)
            };

            var qualifyLead3Response = (QualifyLeadResponse)_serviceProxy.Execute(
                qualifyLead3Request);

            foreach (var entityRef in qualifyLead3Response.CreatedEntities)
            {
                _generatedEntities.Add(entityRef);
            }

            Console.WriteLine("  Lead 3 was qualified.");
        }

        private void PostToPersonalWalls()
        {
            Console.WriteLine("\r\n== Working with Personal Walls ==");
            // Create manual (user) posts on a user's Personal wall.
            var whoAmIRequest = new WhoAmIRequest();
            var whoAmIResponse = (WhoAmIResponse)_serviceProxy.Execute(whoAmIRequest);
            var currentUserRef = new EntityReference(
                SystemUser.EntityLogicalName, whoAmIResponse.UserId);

            // Create a post that mentions lead 1.
            // The Regarding object should be set to the user whose wall the post should
            // be posted to (we'll just use the current user).
            _post1 = new Post
            {
                RegardingObjectId = currentUserRef,
                Source = new OptionSetValue((int)PostSource.ManualPost),
                Text = String.Format("I'd rather not pursue @[{0},{1},\"{2}\"]",
                    Lead.EntityTypeCode, _lead1.Id, _lead1.FullName)
            };

            _serviceContext.AddObject(_post1);
            _serviceContext.SaveChanges();
            Console.WriteLine("  Personal wall post 1 was created.");

            // Create a related comment.
            var comment1 = new PostComment
            {
                PostId = _post1.ToEntityReference(),
                Text = "Personal wall comment 1."
            };

            _serviceContext.AddObject(comment1);
            _serviceContext.SaveChanges();
            Console.WriteLine("  Personal wall comment 1 was created.");

            _post2 = new Post
            {
                RegardingObjectId = currentUserRef,
                Source = new OptionSetValue((int)PostSource.AutoPost),
                Text = "Personal wall post 2."
            };

            _serviceContext.AddObject(_post2);
            _serviceContext.SaveChanges();
            Console.WriteLine("  Personal wall post 2 was created.");

            // Create a few related comments.
            var comment2 = new PostComment
            {
                PostId = _post2.ToEntityReference(),
                Text = "Personal wall comment 2."
            };

            var comment3 = new PostComment
            {
                PostId = _post2.ToEntityReference(),
                Text = "Personal wall comment 3."
            };

            var comment4 = new PostComment
            {
                PostId = _post2.ToEntityReference(),
                Text = "Personal wall comment 4."
            };

            var comment5 = new PostComment
            {
                PostId = _post2.ToEntityReference(),
                Text = "Personal wall comment 5."
            };

            _serviceContext.AddObject(comment2);
            _serviceContext.AddObject(comment3);
            _serviceContext.AddObject(comment4);
            _serviceContext.AddObject(comment5);
            _serviceContext.SaveChanges();
            Console.WriteLine("  Personal wall comments 2, 3, 4, and 5 were created.");

            // Create a couple more posts just to show how paging works.
            _post3 = new Post
            {
                RegardingObjectId = currentUserRef,
                Source = new OptionSetValue((int)PostSource.ManualPost),
                Text = "Personal wall post 3."
            };

            _post4 = new Post
            {
                RegardingObjectId = currentUserRef,
                Source = new OptionSetValue((int)PostSource.AutoPost),
                Text = "Personal wall post 4."
            };

            _serviceContext.AddObject(_post3);
            _serviceContext.AddObject(_post4);
            _serviceContext.SaveChanges();
            Console.WriteLine("  Personal wall posts 3 and 4 were created.");

            // Retrieve this user's personal wall.
            // Retrieve the first page of posts.
            DisplayPersonalWallPage(1);

            // Retrieve the second page of posts.
            DisplayPersonalWallPage(2);

            // Sleep for a second so that the time of the newly created comment will
            // clearly be later than the previously created posts/comments (otherwise
            // Post 3 will not be escalated to the top of the wall).
            Thread.Sleep(1000);

            // Create a new comment on the last post, which will bring the post to the
            // top.
            var newPostComment = new PostComment
            {
                PostId = _post3.ToEntityReference(),
                Text = "New comment to show that new comments affect post ordering."
            };

            _serviceContext.AddObject(newPostComment);
            _serviceContext.SaveChanges();
            Console.WriteLine("\r\n  A new comment was created to show effects on post ordering.");

            // Display the first page of the personal wall to showcase the change in
            // ordering.  Post 3 should be at the top.
            DisplayPersonalWallPage(1);

            // Show paging of comments.
            // Retrieve comments 2 at a time, starting with page 1.
            var commentsQuery = new QueryExpression(PostComment.EntityLogicalName)
            {
                ColumnSet = new ColumnSet(true),
                Criteria = new FilterExpression(LogicalOperator.And),
                PageInfo = new PagingInfo
                {
                    Count = 2,
                    PageNumber = 1,
                    ReturnTotalRecordCount = true
                }
            };

            commentsQuery.Criteria.AddCondition(
                "postid", ConditionOperator.Equal, _post2.Id);

            // Continue querying for comments until there are no further comments to
            // be retrieved.
            EntityCollection commentsResult;
            do
            {
                commentsResult = _serviceProxy.RetrieveMultiple(commentsQuery);

                // Display the comments that we retrieved.
                Console.WriteLine("\r\n  Comments for lead 2 page {0}",
                    commentsQuery.PageInfo.PageNumber);
                foreach (PostComment comment in commentsResult.Entities)
                {
                    DisplayComment(comment);
                }

                commentsQuery.PageInfo.PageNumber += 1;
            }
            while (commentsResult.MoreRecords);
        }

        private void ShowRecordWalls()
        {
            Console.WriteLine("\r\n== Showing Record Walls ==");

            // Create a new post on one of the leads.
            var newLeadPost = new Post
            {
                Source = new OptionSetValue((int)PostSource.AutoPost),
                Text = "New lead post.",
                RegardingObjectId = _lead2.ToEntityReference(),
            };

            _serviceContext.AddObject(newLeadPost);
            _serviceContext.SaveChanges();
            Console.WriteLine("  The new lead 2 post has been created.");

            DisplayRecordWall(_lead1);
            DisplayRecordWall(_lead2);
            DisplayRecordWall(_lead3);
        }
        private void DisplayRecordWall(Lead lead)
        {
            // Display the first page of the record wall.
            var retrieveRecordWallReq = new RetrieveRecordWallRequest
            {
                Entity = lead.ToEntityReference(),
                CommentsPerPost = 2,
                PageSize = 10,
                PageNumber = 1
            };

            var retrieveRecordWallRes =
                (RetrieveRecordWallResponse)_serviceProxy.Execute(retrieveRecordWallReq);

            Console.WriteLine("\r\n  Posts for lead {0}:", lead.FullName);
            foreach (Post post in retrieveRecordWallRes.EntityCollection.Entities)
            {
                DisplayPost(post);
            }
        }

        private void DisplayPersonalWallPage(int pageNumber)
        {
            // Retrieve the page of posts.  We'll only retrieve 5 at a time so that
            // we will have more than one page.
            var pageSize = 5;

            var personalWallPageReq = new RetrievePersonalWallRequest
            {
                CommentsPerPost = 2,
                PageNumber = pageNumber,
                PageSize = pageSize
            };
            var personalWallPageRes =
                (RetrievePersonalWallResponse)_serviceProxy.Execute(personalWallPageReq);

            Console.WriteLine("\r\n  Personal Wall Page {0} Posts:", pageNumber);
            foreach (Post post in personalWallPageRes.EntityCollection.Entities)
            {
                DisplayPost(post);
            }
        }

        private void DisplayPost(Post post)
        {
            Console.WriteLine("    Post, {0}, {1}, {2}: {3}",
                post.CreatedBy.Name,
                (PostType)post.Type.Value,
                (PostSource)post.Source.Value,
                Shorten(post.Text));

            if (post.Post_Comments != null)
            {
                foreach (var comment in post.Post_Comments)
                {
                    DisplayComment(comment);
                }
            }
        }

        private void DisplayComment(PostComment comment)
        {
            Console.WriteLine("      Comment, {0}: {1}",
                        comment.CreatedBy.Name, Shorten(comment.Text));
        }

        private String Shorten(String x)
        {
            return x.Length > 33 ? x.Substring(0, 30) + "..." : x;
        }

        private void CreateRequiredRecords()
        {
            // Create leads for relating activity feed records to. Since there is an
            // active post rule config for creation of a new lead, creating the leads
            // should add an auto post to the record wall for each of the leads.
            _lead1 = new Lead
            {
                CompanyName = "A. Datum Corporation",
                FirstName = "Henriette",
                MiddleName = "Thaulow",
                LastName = "Andersen",
                Subject = "Activity Feeds Sample 1"
            };
            _serviceContext.AddObject(_lead1);

            _lead2 = new Lead
            {
                CompanyName = "Adventure Works",
                FirstName = "Mary",
                MiddleName = "Kay",
                LastName = "Andersen",
                Subject = "Activity Feeds Sample 2"
            };
            _serviceContext.AddObject(_lead2);

            _lead3 = new Lead
            {
                CompanyName = "Fabrikam, Inc.",
                FirstName = "Andrew",
                LastName = "Sullivan",
                Subject = "Activity Feeds Sample 3"
            };
            _serviceContext.AddObject(_lead3);

            _serviceContext.SaveChanges();

            var columnSet = new ColumnSet(true);
            _lead1 = (Lead)_serviceProxy.Retrieve(
                Lead.EntityLogicalName, _lead1.Id, columnSet);
            _lead2 = (Lead)_serviceProxy.Retrieve(
                Lead.EntityLogicalName, _lead2.Id, columnSet);
            _lead3 = (Lead)_serviceProxy.Retrieve(
                Lead.EntityLogicalName, _lead3.Id, columnSet);

            Console.WriteLine("  The leads have been created.");
        }

        private void ActivateRuleConfig(msdyn_PostRuleConfig qualifyLeadRule)
        {
            _serviceProxy.Execute(new SetStateRequest
            {
                EntityMoniker = qualifyLeadRule.ToEntityReference(),
                State = new OptionSetValue((int)msdyn_PostRuleConfigState.Active),
                Status = new OptionSetValue((int)msdyn_postruleconfig_statuscode.Active)
            });
        }

        private msdyn_PostConfig CloneRelevantConfiguration(msdyn_PostConfig config)
        {
            return new msdyn_PostConfig
            {
                msdyn_ConfigureWall = config.msdyn_ConfigureWall,
                msdyn_EntityName = config.msdyn_EntityName,
                msdyn_PostConfigId = config.msdyn_PostConfigId
            };
        }

        private void PublishSystemUserAndLead()
        {
            // The systemuser and lead entities must be published because otherwise the
            // record walls on the respective forms will not update.
            _serviceProxy.Execute(new PublishXmlRequest
            {
                ParameterXml = @"
                    <importexportxml>
                        <entities>
                            <entity>systemuser</entity>
                            <entity>lead</entity>
                        </entities>
                    </importexportxml>"
            });
            Console.WriteLine("  The systemuser and lead entities were published.");
        }

        private void DeleteRequiredRecords(bool prompt)
        {
            var toBeDeleted = true;
            if (prompt)
            {
                // Ask the user if the created entities should be deleted.
                Console.Write("\nDo you want these entity records deleted? (y/n) [y]: ");
                String answer = Console.ReadLine();
                if (answer.StartsWith("y") ||
                    answer.StartsWith("Y") ||
                    answer == String.Empty)
                {
                    toBeDeleted = true;
                }
                else
                {
                    toBeDeleted = false;
                }
            }

            if (toBeDeleted)
            {
                // Handle reverting the configurations appropriately - delete them
                // if they did not exist before.  Otherwise update them to their
                // original values.  Lead must be reverted first since it must be deleted
                // first if systemuser is to be deleted.
                RevertPostConfig(_originalLeadConfig, _leadConfig);
                RevertPostConfig(_originalSystemUserConfig, _systemuserConfig);

                // Revert the form changes.
                PublishSystemUserAndLead();

                // Delete the leads.
                DeleteFromContext(_lead1);
                DeleteFromContext(_lead2);
                DeleteFromContext(_lead3);
                var saveResult = _serviceContext.SaveChanges();
                Console.WriteLine("  The leads have been deleted.");

                Console.WriteLine("  The post follow records were deleted with the leads.");
                Console.WriteLine("  Posts that were related to leads were deleted with the leads.");

                // Delete posts that aren't regarding entities that were deleted.
                DeleteFromContext(_post1);
                DeleteFromContext(_post2);
                DeleteFromContext(_post3);
                DeleteFromContext(_post4);
                _serviceContext.SaveChanges();
                Console.WriteLine("  Posts that weren't regarding deleted entities were deleted.");

                // Delete the generated entities.
                foreach (var entityRef in _generatedEntities)
                {
                    _serviceProxy.Delete(entityRef.LogicalName, entityRef.Id);
                }
                Console.WriteLine("  All generated entities have been deleted.");
            }
        }

        private void DeleteFromContext(Entity entity)
        {
            if (!_serviceContext.IsAttached(entity))
            {
                _serviceContext.Attach(entity);
            }
            _serviceContext.DeleteObject(entity);
            _serviceContext.SaveChanges();
        }

        private void RevertPostConfig(msdyn_PostConfig originalConfig,
            msdyn_PostConfig newConfig)
        {
            if (originalConfig != null)
            {
                // Revert the rule configs.
                foreach (var rule in _postRuleConfigs.Where(
                    x => x.msdyn_PostConfigId.Id == newConfig.msdyn_PostConfigId))
                {
                    // Set the state to the original value.
                    _serviceProxy.Execute(new SetStateRequest
                    {
                        EntityMoniker = rule.ToEntityReference(),
                        State = new OptionSetValue((int)rule.statecode),
                        Status = rule.statuscode
                    });
                }

                // Update the config to the values from the original config.
                // Make sure the context is not tracking the new config and is tracking
                // the original config.
                if (!_serviceContext.IsAttached(originalConfig))
                {
                    if (_serviceContext.IsAttached(newConfig))
                    {
                        _serviceContext.Detach(newConfig);
                    }
                    _serviceContext.Attach(originalConfig);
                }
                _serviceContext.UpdateObject(originalConfig);
                _serviceContext.SaveChanges();
                Console.WriteLine(
                    "  The {0} activity feed configuration was reverted.",
                    originalConfig.msdyn_EntityName);
            }
            else
            {
                _serviceProxy.Delete(newConfig.LogicalName,
                    newConfig.Id);
                Console.WriteLine(
                    "  The {0} activity feed configuration was deleted.",
                    newConfig.msdyn_EntityName);
            }
        }

        #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();

                var app = new WorkingWithActivityFeeds();
                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 method
    }
}

See Also

RetrievePersonalWallRequest
RetrieveRecordWallRequest
Activity feeds entities
Introduction to activity feeds
Configure activity feeds
Post entity messages and methods
PostComment (comment) entity messages and methods
PostFollow (follow) entity messages and methods

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