ReceiveActivity.OperationValidation 事件

定義

命名空間:

System.Workflow.Activities

組件:

System.WorkflowServices.dll

當作業接收到訊息且需要驗證時，會發生這種情況。

public:
 event EventHandler<System::Workflow::Activities::OperationValidationEventArgs ^> ^ OperationValidation;

public event EventHandler<System.Workflow.Activities.OperationValidationEventArgs> OperationValidation;

member this.OperationValidation : EventHandler<System.Workflow.Activities.OperationValidationEventArgs> 

Public Custom Event OperationValidation As EventHandler(Of OperationValidationEventArgs) 

事件類型

EventHandler<OperationValidationEventArgs>

範例

下列範例顯示如何使用 OperationValidation 事件。

[System.Diagnostics.DebuggerNonUserCode]
private void InitializeComponent()
{
    ReceiveActivity receiveActivity1 = new ReceiveActivity();
    receiveActivity1.OperationValidation += new EventHandler<OperationValidationEventArgs>(receiveActivity1_OperationValidation);
}

void receiveActivity1_OperationValidation(object sender, OperationValidationEventArgs e)
{
    OperationContext context = OperationContext.Current;
    bool authorized = false;
    foreach (ClaimSet claims in context.ServiceSecurityContext.AuthorizationContext.ClaimSets)
    {
        if (claims.ContainsClaim(AuthorizedClaim))
        {
            authorized = true;
        }
    }
    e.IsValid = authorized;
}

備註

這是一個選用性的事件處理常式，當 ReceiveActivity 活動將要接收到訊息時，會引發此事件。 關聯的處理常式可用來執行 ClaimSet 安全性檢查，來授權 ReceiveActivity 活動所實作的服務作業之用戶端叫用。

若在事件處理常式內將 OperationValidationEventArgs.IsValid 設為 false，則會拒絕服務作業叫用，且用戶端會收到 FaultException。 若 OperationValidationEventArgs.IsValid 設為 true，則服務作業叫用會成功，且 ReceiveActivity 活動會接收並處理訊息。