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SendActivity.BeforeSend Event

Occurs before the SendActivity activity sends the message to the service.

Namespace:  System.Workflow.Activities
Assembly:  System.WorkflowServices (in System.WorkflowServices.dll)

public event EventHandler<SendActivityEventArgs> BeforeSend

This event handler associated with this event can be used to set the parameter values for the service operation being invoked.


The context of a SendActivity cannot be set in this event handler.

The following example shows how to use the BeforeSend event. This example was adapted from the Conversations SDK sample.

private void InitializeComponent()
    SendActivity sendActivity1 = new SendActivity();
    sendActivity1.BeforeSend += new EventHandler<SendActivityEventArgs>(sendActivity1_BeforeSend);

void sendActivity1_BeforeSend(object sender, SendActivityEventArgs e)
    Console.WriteLine("SendActivity1 BeforeSend event fired.");

void sendActivity1_AfterResponse(object sender, SendActivityEventArgs e)
    Console.WriteLine("SendActivity1 AfterResponse event fired.");

.NET Framework

Supported in: 4, 3.5

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.