将值设置为字段

我创建了一个插件，计算与另一个实体相关的实体的记录数量，如果有多个记录，我检索最后一个记录。如果该记录是非活动的，并且特定字段的值>0，那么我将该字段的值添加到新创建的值中…但是不能让它工作…

任何帮助都太好了!

该插件注册到" new_ligncontract "，其中包含属性"new_unitesutilisees"answers"new_unitesrestantes"

编辑2:

好了，解决了!我所需要的只是简单地为查找字段获取一个EntityReference并重新排列我的代码…

谢谢你的帮助!

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;
using System.Web;
using System.Collections;
using Microsoft.Crm.Sdk.Messages;
using Microsoft.Xrm.Sdk.Messages;
namespace ClassLibrary1
{
    public class StatusContrat : IPlugin
    {         
        public void Execute(IServiceProvider serviceProvider)
        {
            // Instanciation des services
            IPluginExecutionContext context     = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));
            IOrganizationServiceFactory factory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
            IOrganizationService service        = factory.CreateOrganizationService(null);
            Entity statusEntité = (Entity)context.InputParameters["Target"];
                    // Récupération des lignes de contrat liées au contrat courant
                FetchExpression fetch   = new FetchExpression("<fetch distinct='false' mapping='logical'>" +
               "<entity name='new_contrats'>" +
               "<link-entity name='new_lignecontrat' alias='nombreligne' from='new_contratsid' to='new_contratsid'>" +
               "</link-entity>" +
               "</entity>" +
               "</fetch>");
                EntityCollection lines = service.RetrieveMultiple(fetch);
                    // Vérification qu'il y a au moins une ligne de contrat associée
                    if (lines.Entities.Count > 0)
                    {   
                        if (lines.Entities.Last().GetAttributeValue<OptionSetValue>("statecode").Value == 1)
                        {
                           if (lines.Entities.Last().GetAttributeValue<float>("new_unitesrestantes")<0)
                           {
                              var unitesRestantes = (statusEntité.GetAttributeValue<float>("new_unitesrestantes")) + (lines.Entities.Last().GetAttributeValue<float>("new_unitesrestantes"));
                              var unitesUtilisee =  (statusEntité.GetAttributeValue<float>("new_unitesutilisees")) - (lines.Entities.Last().GetAttributeValue<float>("new_unitesutilisees"));
                                statusEntité ["new_unitesutilisees"] = unitesUtilisee;
                                statusEntité ["new_unitesrestantes"] = unitesRestantes;
                                service.Update(statusEntité);
                           }
                        }
                    }
                    else
                    {
                        statusEntité["new_unitesutilisees"] = "0";
                        statusEntité["new_unitesrestantes"] = statusEntité["new_unitestotales"];
                        service.Update(statusEntité);
}                        
         }
      }
   }