CRM 2011 在线插件工作正常，但没有提交更新

Question

我是CRM 2011的新开发人员。我已经为测试制作了简单的代码。
看起来该插件工作正常（通过 ITracingService 检查），但似乎属性没有采用新值。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xrm.Sdk.Query;
using Microsoft.Xrm.Sdk;
namespace AgeUpdatePlugin
{
    public class AgeUpdatePlugin:IPlugin
    {
        public void Execute(IServiceProvider serviceProvider)
        {
            IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));
            try
            {
                IOrganizationServiceFactory serviceFactory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
                ITracingService tracingService = (ITracingService)serviceProvider.GetService(typeof(ITracingService));
                if (tracingService == null)
                    throw new InvalidPluginExecutionException("Failed to retrieve the tracing service.");
                IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId);
                tracingService.Trace("Plugin has started..");
                //l'expression de condition
                ConditionExpression condition = new ConditionExpression("new_datenaissance", ConditionOperator.NotNull);
                FilterExpression filter = new FilterExpression();
                filter.Conditions.Add(condition);
                ColumnSet cols = new ColumnSet();
                //cols.AddColumn("Id");
                cols.AddColumn("new_candidatid");
                cols.AddColumn("new_age");
                cols.AddColumn("new_datenaissance");
                QueryExpression query = new QueryExpression();
                query.Criteria = filter;
                query.EntityName = "new_candidat";
                query.ColumnSet = cols;
                tracingService.Trace("appel retrieve multiple with date=" + DateTime.Now.ToString() + "/"+DateTime.Now.ToLocalTime().ToString());
                var retrieve = service.RetrieveMultiple(query).Entities;
                foreach (var c in retrieve)
                {
                    var dt =(DateTime)c.Attributes["new_datenaissance"];
                    tracingService.Trace(dt.ToString());
                    if (dt.Month == DateTime.Now.Month && dt.Day == DateTime.Now.Day)
                    {
                        tracingService.Trace((DateTime.Now.Year - DateTime.Parse(c["new_datenaissance"].ToString()).Year).ToString());
                        c.Attributes["new_age"] = DateTime.Now.Year - DateTime.Parse(c["new_datenaissance"].ToString()).Year;
                        tracingService.Trace(c.Attributes["new_candidatid"].ToString() +" - "+c.Attributes["new_age"].ToString());
                        service.Update(c);
                        tracingService.Trace("updated");
                    }
                }
                tracingService.Trace("Plugin done working");
                throw new InvalidPluginExecutionException("This is from a plugin that Mehdi has created  "); 
            }
            catch (Exception exc)
            {
                throw exc;
            }
        }
    }
}

Answer 1

每当您在插件中抛出异常时，事务都会中止，因此您不会看到已应用的更改。 删除以下行：

throw new InvalidPluginExecutionException("This is from a plugin that Mehdi has created  "); 

我假设您添加了它以查看仅在抛出异常时才可用的跟踪输出。 使用CRM Online，跟踪的最佳方法是写入自定义跟踪实体。