ReceiveActivity.OperationValidation Event
Definition
Important
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Occurs when a message is received for an operation and validation is required.
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)
Event Type
Examples
The following example shows how to use the OperationValidation
event.
[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;
}
Remarks
This is an optional event handler that is fired when the ReceiveActivity activity is about to receive a message. The associated handler can be used to perform ClaimSet-based security checks to authorize client invocation of the service operation implemented by the ReceiveActivity activity.
Setting OperationValidationEventArgs.IsValid to false
in the event handler rejects the service operation invocation and the client receives a FaultException. If OperationValidationEventArgs.IsValid is set to true
, then the service operation invocation succeeds and the ReceiveActivity activity receives and processes the message.
Applies to
.NET
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