示例：使用自定义工作流活动计算信用得分

项目
07/06/2017

发布日期： 2016年11月

适用于： Dynamics CRM 2015

此示例代码适用于 Microsoft Dynamics CRM 2015 和 Microsoft Dynamics CRM Online 2015 更新。下载 Microsoft Dynamics CRM SDK 包。它可能位于下载包的以下位置：

SampleCode\CS\Process\CustomWorkflowActivities\TestNet4Activity\ReleaseISVActivities.cs

要求

下面的自定义项必须存在，该自定义工作流活动才能运行：

实体架构名称：new_loanapplication
属性：new_loanapplicationid 作为主键
属性：int 类型的 new_creditscore，最小值为 0，最大值为 1000（如果要对其进行更新）
属性：money 类型的 new_loanamount，具有默认的最小值/最大值
自定义窗体以包括属性 new_loanapplicantid

联系人实体必须具有以下自定义项：

属性：new_ssn 作为“单行文本”，最大长度为 15
具有这些属性的一对多关系：
- 关系定义架构名称：new_loanapplicant
- 关系定义相关实体显示名称：贷款应用程序
- 关系属性架构名称：new_loanapplicantid
- 关系行为类型：引用

演示

以下示例工作流活动根据身份证号 (SSN) 和姓名计算信用得分。

示例


/// <summary>
/// Calculates the credit score based on the SSN and name. 
/// </summary>
/// <remarks>
/// This depends on a custom entity called Loan Application and customizations to Contact.
/// 
/// Loan Application requires the following properties:
/// <list>
///     <item>Schema Name: new_loanapplication</item>
///     <item>Attribute: new_loanapplicationid as the primary key</item>
///     <item>Attribute: new_creditscore of type int with min of 0 and max of 1000 (if it is to be updated)</item>
///     <item>Attribute: new_loanamount of type money with default min/max</item>
///     <item>Customize the form to include the attribute new_loanapplicantid</item>
/// </list>
/// 
/// Contact Requires the following customizations
/// <list>
///     <item>Attribute: new_ssn as nvarchar with max length of 15</item>
///     <item>One-To-Many Relationship with these properties:
///         <list>
///             <item>Relationship Definition Schema Name: new_loanapplicant</item>
///             <item>Relationship Definition Related Entity Name: Loan Application</item>
///             <item>Relationship Atttribute Schema Name: new_loanapplicantid</item>
///             <item>Relationship Behavior Type: Referential</item>
///         </list>
///     </item>
/// </list>
/// 
/// The activity takes, as input, a EntityReference to the Loan Application and a boolean indicating whether new_creditscore should be updated to the credit score.
/// </remarks>
/// <exception cref=">ArgumentNullException">Thrown when LoanApplication is null</exception>
/// <exception cref=">ArgumentException">Thrown when LoanApplication is not a EntityReference to a LoanApplication entity</exception>
public sealed partial class RetrieveCreditScore : CodeActivity
{
    private const string CustomEntity = "new_loanapplication";

    protected override void Execute(CodeActivityContext executionContext)
    {
        //Check to see if the EntityReference has been set
        EntityReference loanApplication = this.LoanApplication.Get(executionContext);
        if (loanApplication == null)
        {
            throw new InvalidOperationException("Loan Application has not been specified", new ArgumentNullException("Loan Application"));
        }
        else if (loanApplication.LogicalName != CustomEntity)
        {
            throw new InvalidOperationException("Loan Application must reference a Loan Application entity",
                new ArgumentException("Loan Application must be of type Loan Application", "Loan Application"));
        }

        //Retrieve the CrmService so that we can retrieve the loan application
        IWorkflowContext context = executionContext.GetExtension<IWorkflowContext>();
        IOrganizationServiceFactory serviceFactory = executionContext.GetExtension<IOrganizationServiceFactory>();
        IOrganizationService service = serviceFactory.CreateOrganizationService(context.InitiatingUserId);

        //Retrieve the Loan Application Entity
        Entity loanEntity;
        {
            //Create a request
            RetrieveRequest retrieveRequest = new RetrieveRequest();
            retrieveRequest.ColumnSet = new ColumnSet(new string[] { "new_loanapplicationid", "new_loanapplicantid" });
            retrieveRequest.Target = loanApplication;

            //Execute the request
            RetrieveResponse retrieveResponse = (RetrieveResponse)service.Execute(retrieveRequest);

            //Retrieve the Loan Application Entity
            loanEntity = retrieveResponse.Entity as Entity;
        }

        //Retrieve the Contact Entity
        Entity contactEntity;
        {
            //Create a request
            EntityReference loanApplicantId = (EntityReference)loanEntity["new_loanapplicantid"];

            RetrieveRequest retrieveRequest = new RetrieveRequest();
            retrieveRequest.ColumnSet = new ColumnSet(new string[] { "fullname", "new_ssn", "birthdate" });
            retrieveRequest.Target = loanApplicantId;

            //Execute the request
            RetrieveResponse retrieveResponse = (RetrieveResponse)service.Execute(retrieveRequest);

            //Retrieve the Loan Application Entity
            contactEntity = retrieveResponse.Entity as Entity;
        }

        //Retrieve the needed properties
        string ssn = (string)contactEntity["new_ssn"];
        string name = (string)contactEntity[ContactAttributes.FullName];
        DateTime? birthdate = (DateTime?)contactEntity[ContactAttributes.Birthdate];
        int creditScore;

        //This is where the logic for retrieving the credit score would be inserted
        //We are simply going to return a random number
        creditScore = (new Random()).Next(0, 1000);

        //Set the credit score property
        this.CreditScore.Set(executionContext, creditScore);

        //Check to see if the credit score should be saved to the entity
        //If the value of the property has not been set or it is set to true
        if (null != this.UpdateEntity &amp;&amp; this.UpdateEntity.Get(executionContext))
        {
            //Create the entity
            Entity updateEntity = new Entity(loanApplication.LogicalName);
            updateEntity["new_loanapplicationid"] = loanEntity["new_loanapplicationid"];
            updateEntity["new_creditscore"] = this.CreditScore.Get(executionContext);

            //Update the entity
            service.Update(updateEntity);
        }
    }

    //Define the properties
    [Input("Loan Application")]
    [ReferenceTarget(CustomEntity)]
    public InArgument<EntityReference> LoanApplication { get; set; }

    [Input("Update Entity's Credit Score")]
    [Default("true")]
    public InArgument<bool> UpdateEntity { get; set; }

    [Output("Credit Score")]
    [AttributeTarget(CustomEntity, "new_creditscore")]
    public OutArgument<int> CreditScore { get; set; }
}

另请参阅

自定义工作流活动（工作流程序集）
向自定义工作流活动添加元数据

通过

示例：使用自定义工作流活动计算信用得分

要求

演示

示例

另请参阅

其他资源