Question

我有实体信用额度，上面有3个字段，分别是信用等级，信用额度和配置，配置是查找字段，信用额度字段是货币，信用等级是选项集（A，B，C）。因此更新时它将验证2次，首先是信用等级不能与字段配置已经拥有的信用等级相同

示例：我的预信用等级为B，我的配置已经有2个信用额度，分别为A和B，当我将信用等级更新为A时，这是一个错误，因为配置不能具有2个相同的信用等级

第二次验证是在更新字段信用额度时进行的，因此当前信用额度不能超过原图像信用额度字段，当我尝试将其更新为550美元时，我的原图像信用额度为500美元，将显示错误消息。

因此，我创建了2个插件来同时验证条件和执行的两个事件管道阶段，并将其设置为PreOperation。

，这是信用等级验证

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;
using System;
using System.Collections.Generic;
using TrainingConfiguration.Plugins.Model;

namespace TrainingConfiguration.Plugins
{
    public class CreditRatingUpdateValidation : IPlugin
    {
        public void Execute(IServiceProvider serviceProvider)
        {
            IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));
            Entity entity = (Entity)context.InputParameters["Target"];
            IOrganizationServiceFactory serviceFactory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
            IOrganizationService service = (IOrganizationService)serviceFactory.CreateOrganizationService(context.UserId);
            if (entity.LogicalName.Contains("ita_creditlimit"))
            {

                Entity preImage = (Entity)context.PreEntityImages["CreditImage"];
                EntityReference configuration = (EntityReference)(preImage.Attributes["ita_configuration"]);
                string configurationId = configuration.Id.ToString();

                string fetchXml = @"<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>
                      <entity name='ita_creditlimit'>
                      <attribute name='ita_creditlimitid' />
                      <attribute name='ita_name' />
                      <attribute name='ita_creditrating' />
                      <attribute name='ita_configuration' />
                      <order attribute='ita_name' descending='false' />
                      <filter type='and'>                     
                      <condition attribute='ita_configuration' operator='eq' value=""{0}"" /> 
                      </filter>
                      </entity>
                      </fetch>";
                fetchXml = string.Format(fetchXml, configurationId);
                var qe = new FetchExpression(fetchXml);
                var result = service.RetrieveMultiple(qe);
                var preRating = ((OptionSetValue)preImage.Attributes["ita_creditrating"]).Value;
                var postRating = ((OptionSetValue)entity.Attributes["ita_creditrating"]).Value;
                if (result.Entities.Count > 0)
                {
                    List<String> listCreditRating = new List<string>();                        
                    for (int i = 0; i < result.Entities.Count; i++)
                    {
                        string creditRating = ((OptionSetValue)result.Entities[i].Attributes["ita_creditrating"]).Value.ToString();                           
                        listCreditRating.Add(creditRating);
                    }


                    if (postRating.ToString() != preRating.ToString())
                    {
                        bool alreadyExist = listCreditRating.Contains(postRating.ToString());
                        if (alreadyExist == true)
                        {
                            throw new InvalidPluginExecutionException("Can't have 2 same rating");
                        }
                    }

                }
            }
        }
    }
}

此处用于信用额度验证

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Query;
using System;
using System.Collections.Generic;
using System.Linq;
using TrainingConfiguration.Plugins.Model;

namespace TrainingConfiguration.Plugins
{
    public class CreditUpdateValidation : IPlugin
    {
        public void Execute(IServiceProvider serviceProvider)
        {
            IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));
            ITracingService tracingService = (ITracingService)serviceProvider.GetService(typeof(ITracingService));
            IOrganizationServiceFactory serviceFactory =
            (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
            IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId);
            Entity entity = (Entity)context.InputParameters["Target"];

            if (entity.LogicalName.Equals("ita_creditlimit"))
            {
                decimal parseInt1 = 0;
                decimal parseInt2 = 0;
                Entity preImage = (Entity)context.PreEntityImages["CreditImage"];
                if (context.PreEntityImages.Contains("CreditImage"))
                {
                    Money preValue = (Money)preImage.Attributes["ita_creditlimit"];

                    parseInt1 = preValue.Value;
                }
                Money postValue = (Money)entity.Attributes["ita_creditlimit"];

                parseInt2 = postValue.Value;

                if (parseInt2 > parseInt1)
                {
                    throw new InvalidPluginExecutionException("Can't Exceed the credit limit");
                }

            }

        }
    }
}

这两个插件一开始都可以正常工作。在尝试一起运行之前，我不知道为什么当我尝试运行一起运行它将有一个奇怪的异常，有时会说ita_rating键的属性不是找到或发现ita_creditlimit，即使我已经在插件注册中的过滤属性上添加了它我已经尝试解决这一问题了一天，但我仍然不知道为什么会发生这些奇怪的行为因为当我尝试禁用其中一个插件时，另一个插件将起作用，任何人都可以给予启发是什么原因造成的？这是我的代码还是其他东西？而且我已经尝试使用try and catch了，这是我得到的例外情况

System.Collections.Generic.KeyNotFoundException: The given key was not present in the dictionary.
at System.Collections.Generic.Dictionary`2.get_Item(TKey key)
at TrainingConfiguration.Plugins.CreditUpdateValidation.Execute(IServiceProvider serviceProvider)

Answer 1

我认为我已经知道这里出了什么问题，因此Money postValue = (Money)entity.Attributes["ita_creditlimit"];或var value1 = (OptionSetValue)entity.Attributes["ita_creditrating"];仅在值更改时才具有属性。例如，当我的信用额度为$ 500时，我只是不让它在那里更新我的信用额度，多数民众赞成在出现错误时进行修复，因此我尝试使用catch进行修复，当其错误时，我将PreImage用作我的信用额度。

在表单

1 个答案: