SqlWorkflowInstanceStore.Promote 方法

定义

命名空间:
System.Activities.DurableInstancing
程序集:
System.Activities.DurableInstancing.dll

将指定的属性与工作流实例相关联，以便可以根据这些属性的特定值查询实例。 可在外部查询中使用的这些属性可以是简单类型（例如：Int64、String 等）或序列化二进制类型（byte[]）。 二进制属性通常用于存储跟踪数据。

public:
 void Promote(System::String ^ name, System::Collections::Generic::IEnumerable<System::Xml::Linq::XName ^> ^ promoteAsVariant, System::Collections::Generic::IEnumerable<System::Xml::Linq::XName ^> ^ promoteAsBinary);
public void Promote(string name, System.Collections.Generic.IEnumerable<System.Xml.Linq.XName> promoteAsVariant, System.Collections.Generic.IEnumerable<System.Xml.Linq.XName> promoteAsBinary);
member this.Promote : string * seq<System.Xml.Linq.XName> * seq<System.Xml.Linq.XName> -> unit
Public Sub Promote (name As String, promoteAsVariant As IEnumerable(Of XName), promoteAsBinary As IEnumerable(Of XName))

参数

name
String

提升本身的名称。

promoteAsVariant
IEnumerable<XName>

必须提升为变体的属性。

promoteAsBinary
IEnumerable<XName>

必须作为二进制流提升的属性。

注解

示例

下面的代码示例演示如何在 .SqlWorkflowInstanceStore

static void Main(string[] args)
{
    // Create service host.
    WorkflowServiceHost host = new WorkflowServiceHost(CountingWorkflow(), new Uri(hostBaseAddress));

    // Add service endpoint.
    host.AddServiceEndpoint("ICountingWorkflow", new BasicHttpBinding(), "");

    // Define SqlWorkflowInstanceStore and assign it to host.
    SqlWorkflowInstanceStoreBehavior store = new SqlWorkflowInstanceStoreBehavior(connectionString);
    List<XName> variantProperties = new List<XName>()
    {
        xNS.GetName("Count")
    };
    store.Promote("CountStatus", variantProperties, null);

    host.Description.Behaviors.Add(store);

    host.WorkflowExtensions.Add<CounterStatus>(() => new CounterStatus());
    host.Open(); // This sample needs to be run with Admin privileges.
                 // Otherwise the channel listener is not allowed to open ports.
                 // See sample documentation for details.

    // Create a client that sends a message to create an instance of the workflow.
    ICountingWorkflow client = ChannelFactory<ICountingWorkflow>.CreateChannel(new BasicHttpBinding(), new EndpointAddress(hostBaseAddress));
    client.start();

    Console.WriteLine("(Press [Enter] at any time to terminate host)");
    Console.ReadLine();
    host.Close();
}

适用于