Dynamics CRM 插件 - 删除时刷新汇总

Question

我有一个特殊情况需要处理。我有一个插件可以在创建或更新发票明细时刷新发票上的特定汇总字段。现在我需要在删除发票详细信息时刷新该字段。

分析这个问题，我意识到我无法在预操作中刷新汇总字段，因为发票明细记录尚未删除，并且在 post 操作中我无法从该特定记录中检索发票 Guid，因为它是走了。

这里是 create/update 上处理汇总刷新的代码：

Entity invoiceDetail = service.Retrieve("invoicedetail", targetId, new ColumnSet(true));
Guid invoiceID = ((EntityReference)invoiceDetail["invoiceid"]).Id;
if (targetEntity.Attributes.Contains("extendedamount"))
{
    Entity myEntity = service.Retrieve("invoice", invoiceID, new ColumnSet(true));
    CalculateRollupFieldRequest rollupRequest = new CalculateRollupFieldRequest
    {
        Target = new EntityReference("invoice", invoiceID),
        FieldName = "detailamount"
    };
    CalculateRollupFieldResponse response = (CalculateRollupFieldResponse)service.Execute(rollupRequest);
    myEntity = response.Entity;
    service.Update(myEntity);
}

你有什么建议吗？我快被这个气死了，什么都想不起来了...

Answer 1

您可以在活动前获得 guid，并将其传递给 post-event - MSDN documentation

sample code from MSDN:

using System;

// Microsoft Dynamics CRM namespace(s)
using Microsoft.Xrm.Sdk;

namespace Microsoft.Crm.Sdk.Samples
{
    /// <summary>
    /// A plug-in that sends data to another plug-in through the SharedVariables
    /// property of IPluginExecutionContext.
    /// </summary>
    /// <remarks>Register the PreEventPlugin for a pre-operation stage and the 
    /// PostEventPlugin plug-in on a post-operation stage.
    /// </remarks>
    public class PreEventPlugin : IPlugin
    {
        public void Execute(IServiceProvider serviceProvider)
        {
            // Obtain the execution context from the service provider.
            Microsoft.Xrm.Sdk.IPluginExecutionContext context = (Microsoft.Xrm.Sdk.IPluginExecutionContext)
                serviceProvider.GetService(typeof(Microsoft.Xrm.Sdk.IPluginExecutionContext));

            // Create or retrieve some data that will be needed by the post event
            // plug-in. You could run a query, create an entity, or perform a calculation.
            //In this sample, the data to be passed to the post plug-in is
            // represented by a GUID.
            Guid contact = new Guid("{74882D5C-381A-4863-A5B9-B8604615C2D0}");

            // Pass the data to the post event plug-in in an execution context shared
            // variable named PrimaryContact.
            context.SharedVariables.Add("PrimaryContact", (Object)contact.ToString());
        }
    }

    public class PostEventPlugin : IPlugin
    {
        public void Execute(IServiceProvider serviceProvider)
        {
            // Obtain the execution context from the service provider.
            Microsoft.Xrm.Sdk.IPluginExecutionContext context = (Microsoft.Xrm.Sdk.IPluginExecutionContext)
                serviceProvider.GetService(typeof(Microsoft.Xrm.Sdk.IPluginExecutionContext));

            // Obtain the contact from the execution context shared variables.
            if (context.SharedVariables.Contains("PrimaryContact"))
            {
                Guid contact =
                    new Guid((string)context.SharedVariables["PrimaryContact"]);

                // Do something with the contact.
            }
        }
    }
}

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