Microsoft CRM 2011 插件 - 简单问题

Question

我正在尝试编写一个插件来在 Microsoft CRM 2011 中创建一个新的联系人实体。我还没有在网上找到任何有用的信息，我觉得我整天都在用头撞砖墙。我在下面发布的代码给了我一个错误，说“当前上下文中不存在名称'服务'”。谁能告诉我这是怎么回事？

// <copyright file="PreValidateContactCreate.cs" company="">
// Copyright (c) 2013 All Rights Reserved
// </copyright>
// <author></author>
// <date>8/6/2013 4:22:10 PM</date>
// <summary>Implements the PreValidateContactCreate Plugin.</summary>
// <auto-generated>
//     This code was generated by a tool.
//     Runtime Version:4.0.30319.1
// </auto-generated>
namespace Plugins1
{
    using System;
    using System.ServiceModel;
    using System.Collections.Generic;
    using Microsoft.Xrm.Sdk;
    using Microsoft.Crm.Sdk.Messages;
    using Microsoft.Xrm.Sdk.Client;
    using Microsoft.Xrm.Sdk.Discovery;
    using Microsoft.Xrm.Sdk.Metadata;
    using Microsoft.Xrm.Sdk.Query;


    /// <summary>
    /// PreValidateContactCreate Plugin.
    /// </summary>    
    public class PreValidateContactCreate: Plugin
    {
        /// <summary>
        /// Initializes a new instance of the <see cref="PreValidateContactCreate"/> class.
        /// </summary>
        public PreValidateContactCreate()
            : base(typeof(PreValidateContactCreate))
        {
            base.RegisteredEvents.Add(new Tuple<int, string, string, Action<LocalPluginContext>>(10, "Create", "contact", new Action<LocalPluginContext>(ExecutePreValidateContactCreate)));

            // Note : you can register for more events here if this plugin is not specific to an individual entity and message combination.
            // You may also need to update your RegisterFile.crmregister plug-in registration file to reflect any change.
        }

        /// <summary>
        /// Executes the plug-in.
        /// </summary>
        /// <param name="localContext">The <see cref="LocalPluginContext"/> which contains the
        /// <see cref="IPluginExecutionContext"/>,
        /// <see cref="IOrganizationService"/>
        /// and <see cref="ITracingService"/>
        /// </param>
        /// <remarks>
        /// For improved performance, Microsoft Dynamics CRM caches plug-in instances.
        /// The plug-in's Execute method should be written to be stateless as the constructor
        /// is not called for every invocation of the plug-in. Also, multiple system threads
        /// could execute the plug-in at the same time. All per invocation state information
        /// is stored in the context. This means that you should not use global variables in plug-ins.
        /// </remarks>
        protected void ExecutePreValidateContactCreate(LocalPluginContext localContext)
        {
            if (localContext == null)
            {
                throw new ArgumentNullException("localContext");
            }

            // TODO: Implement your custom Plug-in business logic.


            Entity Contact = new Entity("contact");
            Contact.Attributes["firstname"] = "SomeName";
            Contact.Attributes["lastname"] = "SomeSurname";

            service.Create(Contact);
        }
    }
}

Answer 1

由于尚未定义服务而引发错误。在调用 service.Create 之前需要对其进行定义。

以下是我用于插件的一些代码，您可能会发现它们很有用。似乎比你的例子简单一点。

编辑：我已修改代码以显示创建和更新

using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Messages;
using Microsoft.Xrm.Sdk.Query;
using System;
using System.Collections.Generic;
using System.Linq;
using System.ServiceModel;

namespace PluginSample
{
    public class ContactSample : IPlugin
    {
        public void Execute(IServiceProvider serviceProvider)
        {
            // Get the context
            IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));

            try
            {
                IOrganizationServiceFactory factory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
                IOrganizationService service = factory.CreateOrganizationService(context.UserId);

                if (context.MessageName == "Create")
                {
                    // Creates a contact
                    Entity contact = new Entity("contact");
                    contact.Attributes.Add("firstname", "SomeName");
                    contact.Attributes.Add("lastname", "SomeSurname");
                    service.Create(contact);
                }
                else if (context.MessageName == "Update")
                {
                    if (context.InputParameters.Contains("Target") && context.InputParameters["Target"] is Entity)
                    {
                        // Update contact
                        Entity contact = new Entity("contact");
                        contact.Id = new Guid("EBFB262C-5EFF-E211-8BEB-1CC1DEEAE7EC");
                        contact.Attributes.Add("firstname", "Name Changed");
                        service.Update(contact);
                    }
                }

            }
            catch (Exception generalException)
            {
                throw new InvalidPluginExecutionException("Plugin Failed - Execute :-(", generalException);
            }
        }
    }
}

Answer 2

使用 localContext 参数进入组织服务。

*<param name="localContext">The <see cref="LocalPluginContext"/> which contains the
        /// <see cref="IPluginExecutionContext"/>,
        /// <see cref="IOrganizationService"/>*

Answer 3

public class CreateRecord : IPlugin
    {
        /// <summary>
        /// Execute Method
        /// </summary>
        /// <param name="serviceProvider">IServiceProvider object.</param>
        public void Execute(IServiceProvider serviceProvider)
        {
            //Obtain the tracing service.
            ITracingService tracingService = (ITracingService)serviceProvider.GetService(typeof(ITracingService));
            if (tracingService == null)
                throw new Exception("Unable to obtain tracing service.");

            //Obtain the execution context from the service provider.
            IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));
            if (context == null)
                throw new Exception("Unable to obtain Plugin Execution context.");

            //Obtain the organization service reference
            IOrganizationServiceFactory serviceFactory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
            if (serviceFactory == null)
                throw new Exception("Unable to obtain Organization service factory.");

            IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId);
            if (service == null)
                throw new Exception("Unable to obtain organization service.");

            Entity contact = new Entity("contact");
            contact["firstname"] = "Your First Name";
            contact["lastname"] = "Your Last Name";
            Guid contactId = service.Create(contact);
        }
    }  

以上代码是创建记录的示例，在本例中为 CRM 中的联系人。 contactid 应该保存创建的记录。您可以在活动联系人视图下与其他联系人一起找到创建的记录。

希望这会有所帮助。如果您需要更多帮助，请告诉我。快乐学习！！！ :)