关于动态 crm 2011:WorkFlow Context System.NullReferenceException

WorkFlow Context System.NullReferenceException

在我的工作流程中插入或删除营销列表中的联系人。根据输入的布尔参数值。
真-> 插入
-> 如果联系人存在
然后返回
-> 其他
错误 -> 删除
-> 如果不存在
然后返回

此 WFA 在事件上运行。

在第一次触发时，它运行良好，删除或添加联系人。但是我重新运行更改布尔值，我得到以下异常消息：

Workflow paused due to error: Unhandled Exception:
System.NullReferenceException: Object reference not set to an instance
of an object. at
ContactToMList.ContactToMList.Execute(CodeActivityContext
executionContext) at
System.Activities.CodeActivity.InternalExecute(ActivityInstance
instance, ActivityExecutor executor, BookmarkManager bookmarkManager)
at
System.Activities.Runtime.ActivityExecutor.ExecuteActivityWorkItem.ExecuteBody(ActivityExecutor

executor, BookmarkManager bookmarkManager, Location resultLocation)

似乎没有考虑上下文。

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Crm.Sdk.Messages;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Workflow;
using System.Activities;
using ContactToMList;

namespace ContactToMList
{
public class ContactToMList : CodeActivity
{

[Input("Contatto")]
[ReferenceTarget("contact")]
public InArgument<EntityReference> contact { get; set; }

[Input("Marketing List")]
[ReferenceTarget("list")]
public InArgument<EntityReference> MList { get; set; }

[Input("Inserimento")]
public InArgument<bool> inserimento { get; set; }

bool action = false;
private static string _logs = string.Empty;
private static IOrganizationService myService = null;
private static string _separataore ="\
\
";
private static Log_Entity log = new Log_Entity(string.Empty, myService);
protected override void Execute(CodeActivityContext executionContext)
{
try
{

ITracingService tracingService = executionContext.GetExtension<ITracingService>();

// Create the context
IWorkflowContext context = executionContext.GetExtension<IWorkflowContext>();

IOrganizationServiceFactory serviceFactory = executionContext.GetExtension<IOrganizationServiceFactory>();

// Create the Organiztion service
IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId);
myService = service;
log.WriteLog("");
// Get the target entity from the context
// var target = context.InputParameters["EntityId"];

Guid contactiId = contact.Get<EntityReference>(executionContext).Id;
Guid ListId = MList.Get<EntityReference>(executionContext).Id;
bool insert = inserimento.Get<bool>(executionContext);

// Prepare DataContext by using AutoGenerated cs file
XrmDataContext datacontext = new XrmDataContext(service);

var MyContact = (from c in datacontext.ContactSet where c.ContactId == contactiId select c.Id).ToArray();
var MyList = (from l in datacontext.ListSet where l.Id == ListId select l).ToList().FirstOrDefault();
// tutti i membri della lista di marketing
var members = (from m in datacontext.ListMemberSet where m.ListId.Id == MyList.ListId select m.EntityId.Id).ToArray();

if (MyList.MemberType == 2)
{
if (MyList.Type.Value == false)
{
foreach (Guid id in members)
if (MyContact.FirstOrDefault() == id)
action = true;

if (insert && !action)
{

AddListMembersListRequest AddMemberRequest = new AddListMembersListRequest();

AddMemberRequest.ListId = ListId;
AddMemberRequest.MemberIds = MyContact;
// Use AddListMembersListReponse to get information about the request execution
AddListMembersListResponse AddMemberResponse = service.Execute(AddMemberRequest) as AddListMembersListResponse;
//service.Update(MyList);

}
else if (!insert && action)
{

RemoveMemberListRequest RemoveMemberRequest = new RemoveMemberListRequest();
RemoveMemberRequest.ListId = ListId;
RemoveMemberRequest.EntityId = MyContact.FirstOrDefault();
// Use AddListMembersListReponse to get information about the request execution
RemoveMemberListResponse RemoveMemberResponse = service.Execute(RemoveMemberRequest) as RemoveMemberListResponse;
// service.Update(MyList);

}
}
else
{
tracingService.Trace("Stai cercando di inserire un contatto in una lista di Marketing che non è statica.");
_logs +="Stai cercando di inserire un contatto in una lista di Marketing che non è statica." + _separataore;
return;

}
}
else
{
tracingService.Trace("Stai cercando di inserire un enittà diversa da un contatto.");
_logs +="Stai cercando di inserire un enittà diversa da un contatto." + _separataore;
return;
}

}
catch (Exception ex)
{
log.WriteLog(ex.Message);

}

}
}
}

相关讨论

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在我有 TrainingContext 的地方，您将用您使用 CRM SDK 中的 CrmSvcUtil 生成的上下文替换它。

CrmConnection connection = CrmConnection.Parse("Url=http://localhost/trainingorg1; Domain=; Username=; Password=;");
OrganizationService service = new OrganizationService(connection);
string template ="http://localhost/main.aspx?etn={0}&pagetype=entityrecord&id=%7B{1}%7D";

using (TrainingContext svc = new TrainingContext(service))
{
svc.MergeOption = Microsoft.Xrm.Sdk.Client.MergeOption.NoTracking;

training_customer customer = svc.training_customerSet.FirstOrDefault(c => c.training_name =="George.Lucas");
customer.training_SocialSecurityNumber ="123-45-6789";
svc.Update(customer);

#region interaction activity
//try
//{
// training_customer customer = new training_customer
// {
// EmailAddress ="[email protected]",
// training_name ="George.Lucas",
// training_UniqueCustomerIdentifier ="George.Lucas"
// };
// customer.Id = svc.Create(customer);

// training_interactiontypemaster typeMaster = new training_interactiontypemaster
// {
// training_Description ="Indicates an Interaction initiated because a Customer needed to update an Address",
// training_InteractionTypeValue ="Address Update"
// };
// typeMaster.Id = svc.Create(typeMaster);

// training_interaction interaction = new training_interaction
// {
// training_name ="Command Prompt",
// training_Customer = customer.ToEntityReference(),
// training_Description = typeMaster.training_Description,
// training_InteractionType = typeMaster.ToEntityReference()
// };

// interaction.Id = svc.Create(interaction);
// EntityReference reference = interaction.ToEntityReference();
// customer.training_Interaction = reference;
// svc.Update(customer);

// training_interactionactivity activity = new training_interactionactivity
// {
// training_ActivityName ="Customer Update",
// training_Description ="Updating Customer:" + customer.training_name,
// training_Interaction = reference,
// training_Entity = string.Format(template, customer.LogicalName, customer.Id)
// };
// activity[customer.LogicalName] = customer.ToEntityReference();
// svc.Create(activity);

// training_address address = new training_address
// {
// training_City ="City",
// training_Country ="Country",
// training_County ="County",
// training_Interaction = reference,
// training_Street1 ="Street 1",
// training_Street2 ="Street 2"
// };
// address.Id = svc.Create(address);

// training_interactionactivity activityTwo = new training_interactionactivity
// {
// training_Address = address.ToEntityReference(),
// training_ActivityName ="Address Update",
// training_Description ="Updating the Address for Customer:" + customer.training_name,
// training_Interaction = reference,
// training_Entity = string.Format(template, address.LogicalName, address.Id)
// };
// //activityTwo[address.LogicalName] = new CrmEntityReference(training_address.EntityLogicalName, addressId);
// svc.Create(activityTwo);
//}
//catch (Exception e)
//{
// Console.WriteLine(e.ToString());
//}
#endregion
}