奇怪的行为 CRM 2011 插件

我已经为我们的报价产品注册了一个插件。该插件在我们的测试环境中运行良好。我已经测试过很多次了。然后在主服务器中注册插件。但是，会出现以下情况： 当我首先创建或更新报价产品时，报价产品表单会变灰：

单击报价单后，出现错误。没有可用的日志文件（如您所见）。我调试了该插件，但也没有错误。单击“确定”后，错误消失，并且在报价产品（针对税务字段）上发生所需的业务。意味着插件的代码没有错误并且运行良好。代码如下：

using System;
using System.Diagnostics;
using System.Linq;
using System.ServiceModel;
using Microsoft.Xrm.Sdk;
using Xrm;
using System.Collections.Generic;
using Microsoft.Xrm.Sdk.Deployment;

public class Plugin : IPlugin
{
    public void Execute(IServiceProvider serviceProvider)
    {
        IPluginExecutionContext context = (IPluginExecutionContext)
        serviceProvider.GetService(typeof(IPluginExecutionContext));
        Entity entity;
        if (context.InputParameters.Contains("Target") &&
        context.InputParameters["Target"] is Entity)
        {
            entity = (Entity)context.InputParameters["Target"];
            if (entity.LogicalName != "quotedetail") { return; }
        }
        else
        {
            return;
        }
        try
        {
            IOrganizationServiceFactory serviceFactory =
                (IOrganizationServiceFactory)serviceProvider.GetService(
            typeof(IOrganizationServiceFactory));
            IOrganizationService service =
            serviceFactory.CreateOrganizationService(context.UserId);
            if (context.MessageName == "Create")
            {
                Entity QuoteProduct = (Entity)context.InputParameters["Target"];
                Guid QPID = QuoteProduct.Id;
                TaxCreator(service, QPID);
            }
            if (context.MessageName == "Update" && context.Depth < 3)
            {
                Entity QuoteProduct = (Entity)context.PostEntityImages["Target"];
                Guid QPID = QuoteProduct.Id;
                TaxUpdater(service, QPID);
            }
        }
        catch (FaultException<OrganizationServiceFault> ex)
        {
            throw new InvalidPluginExecutionException(
            "An error occurred in the plug-in.", ex);
        }
    }
    private static void TaxCreator(IOrganizationService service, Guid QPID)
    {
        using (var crm = new XrmServiceContext(service))
        {
            var QuoteProduct = crm.QuoteDetailSet.Where(c => c.QuoteDetailId == QPID).First();
            var SaleSetting = crm.new_salessettingSet.Where(c => c.statecode == 0).First();
            double TaxPercent = (Convert.ToDouble(SaleSetting.new_TaxPercent) / 100);
            if (QuoteProduct.IsPriceOverridden == false)
            {
                decimal Tax = (decimal)Convert.ToDecimal(Convert.ToDouble(QuoteProduct.BaseAmount - QuoteProduct.ManualDiscountAmount.GetValueOrDefault()) * TaxPercent);
                decimal PricePerUnit = (decimal)(QuoteProduct.PricePerUnit.GetValueOrDefault() - QuoteProduct.VolumeDiscountAmount.GetValueOrDefault());
                crm.UpdateObject(QuoteProduct);
                crm.SaveChanges();
                QuoteProduct.Attributes["tax"] = new Money(Tax);
                QuoteProduct.Attributes["new_result"] = new Money(PricePerUnit);
                crm.UpdateObject(QuoteProduct);
                crm.SaveChanges();
            }
        }
    }
    private static void TaxUpdater(IOrganizationService service, Guid QPID)
    {
        using (var crm = new XrmServiceContext(service))
        {
            var QuoteProduct = crm.QuoteDetailSet.Where(c => c.QuoteDetailId == QPID).First();
            var SaleSetting = crm.new_salessettingSet.Where(c => c.statecode == 0).First();
            double TaxPercent = (Convert.ToDouble(SaleSetting.new_TaxPercent) / 100);
            if (QuoteProduct.IsPriceOverridden == false)
            {
                decimal Tax = (decimal)Convert.ToDecimal(Convert.ToDouble(QuoteProduct.BaseAmount - QuoteProduct.ManualDiscountAmount.GetValueOrDefault()) * TaxPercent);
                decimal PricePerUnit = (decimal)(QuoteProduct.PricePerUnit.GetValueOrDefault() - QuoteProduct.VolumeDiscountAmount.GetValueOrDefault());
                crm.UpdateObject(QuoteProduct);
                crm.SaveChanges();
                QuoteProduct.Attributes["tax"] = new Money(Tax);
                QuoteProduct.Attributes["new_result"] = new Money(PricePerUnit);
                crm.UpdateObject(QuoteProduct);
                crm.SaveChanges();
            }
        }
    }
}

我还检查了服务器上的事件查看器是否有错误，但没有结果！ 我已注册了用于创建和更新报价产品的插件。 任何帮助是极大的赞赏。

我会对其进行霰弹枪调试。实施以下跟踪。通常，我将跟踪器的声明放置为类成员（因此它对类中的所有帮助方法都是可见的），并在每次操作（或多或少）之后写入它（当绝望和沮丧时）。然后，当程序自行崩溃时（或者当我故意崩溃以查看跟踪日志时），我通常可以查明问题区域。

public class MyPlugin _ IPlugin
{
  private ITracingService _trace;

  public void Execute(IServiceProvider service)
  {
    _trace = (ITracingService)service.GetService(typeof(ITracingService));
    _trace.Trace("Commencing.");
    ...
    _trace.Trace("Right before an operation. " + someValue);
    PerformAnOperation();
    _trace.Trace("Right before an other operation. " + someOtherValue);
    PerformAnOtherOperation();
    ...
    throw new Exception("Intentional!");
  }
}

然后，您可以继续查看到底问题出在哪里。根据我的经验，一旦人们知道where很痛苦，人们可以很容易地建议如何解决这个问题。

EDIT:

由于OP要求更多细节，我正在获取他的代码并为他将跟踪算法放入其中。有点多余，但显然，CRM 可能非常令人困惑。我自己也去过那里。

public class Plugin : IPlugin
{
  // Here we declare our tracer.
  private ITracingService _trace;

  public void Execute(IServiceProvider serviceProvider)
  {
    // Here we create it.
    _trace = (ITracingService)serviceProvider
      .GetService(typeof(ITracingService));
    _trace.Trace("Commencing.");

    // Here we crash our plugin just to make sure that we can see the logs 
    // with trace information. This statement should be gradually moved down
    // the code to discover where exactly the plugin brakes.
    throw new Exception("Intentional!");

    IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider
      .GetService(typeof(IPluginExecutionContext));
    Entity entity;
    ...

    try { ... }
    catch (FaultException<OrganizationServiceFault> ex)
    {
      throw new InvalidPluginExecutionException(
        "An error occurred in the plug-in.", ex);
    }

    // Here we catch all other kinds of bad things that can happen.
    catch(Exception exception) { throw exception; }
  }

  private static void TaxCreator(IOrganizationService service, Guid QPID)
  {
    // Here we add a line to the trace hoping that the execution gets here.
    _trace.Trace("Entered TaxCreator.");

    using (var crm = new XrmServiceContext(service))
    {
      var QuoteProduct = crm.QuoteDetailSet.Where(...).First();
      var SaleSetting = crm.new_salessettingSet.Where(...).First();
      double TaxPercent = (Convert.ToDouble(...) / 100);

      // Here we add a line to the trace to see if we get past this point.
      _trace.Trace("Approaching if statement.");

      if (QuoteProduct.IsPriceOverridden == false) { ... }
    }
  }

  private static void TaxUpdater(IOrganizationService service, Guid QPID)
  {
    // Here we add a line to the trace hoping that the execution gets here.
    _trace.Trace("Entered TaxUpdater.");

    ...
  }
}