一个简单的自定义工作流活动

这个简单的Custom Workflow Activity演示如何创建自定义活动，并在其中调用第三方的dll。

首先假设我们拿到了一个第三方提供的接口，该接口是用dll的形式提供的，我们要实现一个自定义工作流活动并且调用dll中的方法。

code：

 

using System;
using System.ComponentModel;
using System.ComponentModel.Design;
using System.Workflow.ComponentModel.Compiler;
using System.Workflow.ComponentModel.Serialization;
using System.Workflow.ComponentModel;
using System.Workflow.ComponentModel.Design;
using System.Workflow.Runtime;
using System.Workflow.Activities;
using System.Workflow.Activities.Rules;

// Microsoft Dynamics CRM namespaces
using Microsoft.Crm.Sdk;
using Microsoft.Crm.SdkTypeProxy;
using Microsoft.Crm.Workflow;
using Microsoft.Crm.Workflow.Activities;
using Microsoft.Crm.Sdk.Query;

//Third Party namespaces
using ThirdPartyFactory;

namespace CustomWorkflowActivity
{
    [CrmWorkflowActivity("Test", "Custom Workflow Activity")]
    public class TestActivity : SequenceActivity
    {
        protected override ActivityExecutionStatus Execute(ActivityExecutionContext executionContext)
        {
            try
            {
                // Get access to the Microsoft Dynamics CRM Web service proxy.
                IContextService contextService = (IContextService)executionContext.GetService(typeof(IContextService));
                IWorkflowContext context = contextService.Context;
                ICrmService crmService = context.CreateCrmService();

                // TODO: Workflow activity business logic goes here.
                # 初始化并调用
                  ThirdPartyClass message = new ThirdPartyClass((String)InputParameter1);
                int result = message.Test();
            }
            catch (System.Web.Services.Protocols.SoapException ex)
            {
               throw new InvalidPluginExecutionException(
                    String.Format("An error occurred in the {0} plug-in.",
                      this.GetType().ToString()),
                     ex);
            }

           return ActivityExecutionStatus.Closed;
        }

        /// <summary>
        /// 输入参数
         /// </summary>
        public static DependencyProperty InputParameter1Property =
            DependencyProperty.Register("InputParameter1", typeof(System.String), typeof(TestActivity));
        [CrmInput("InputParameter1")]
        public String InputParameter1
        {
            get
            {
                return (String)base.GetValue(InputParameter1Property);
            }
            set
            {
                base.SetValue(InputParameter1Property, value);
            }
        }
    }
}

 

 

注：第三方的dll要拷贝到 服务器 “C:\Program Files\Microsoft Dynamics CRM\Server\bin”目录。