PowerSNMP for .NET CF
Marshal(MessageBase[],Object) Method
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Dart.Snmp Namespace > SnmpBase Class > Marshal Method : Marshal(MessageBase[],Object) Method




messages
Message instances derived from MessageBase to be marshaled.
state
Additional information provided by the user.
Marshals SNMP messages to the UI thread.

Syntax

Visual Basic (Declaration) 
Public Overloads Sub Marshal( _
   ByVal messages() As MessageBase, _
   ByVal state As Object _
) 
Visual Basic (Usage)Copy Code
Dim instance As SnmpBase
Dim messages() As MessageBase
Dim state As Object
 
instance.Marshal(messages, state)
C# 
public void Marshal( 
   MessageBase[] messages,
   object state
)
Managed Extensions for C++ 
public: void Marshal( 
   MessageBase*[]* messages,
   Object* state
) 
C++/CLI 
public:
void Marshal( 
   array<MessageBase^>^ messages,
   Object^ state
) 

Parameters

messages
Message instances derived from MessageBase to be marshaled.
state
Additional information provided by the user.

Example

The following example demonstrates sending a Get request to an agent and receiving the response.
C#Copy Code
private void button1_Click(object sender, EventArgs e)
{
    //Create and send request on a worker thread
    manager1.Start(manager1_SendGetRequest, manager1.Mib.CreateVariable(NodeName.sysContact));
}

private void manager1_SendGetRequest(Dart.Snmp.ManagerSlave slave, object state)
{
    //Create Get Request
    GetMessage request = new GetMessage();
    request.Community = "public";
    request.Version = SnmpVersion.One;
    request.Variables.Add(state as Variable);

    //Send request and get response
    ResponseMessage response = slave.GetResponse(request, myAgentAddress);

    //Marshal message to the UI thread using the Message event
    manager1.Marshal(new ResponseMessage[] { response }, null);
}

private void manager1_Message(object sender, Dart.Snmp.MessageEventArgs e)
{
    //Display info about the first variable in the response, and its value
    Variable var = e.Messages[0].Variables[0] as Variable;
    label1.Text = var.Definition.ToString() + var.Value.ToString();
}
Visual BasicCopy Code
Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs)
	'Create and send request on a worker thread
	manager1.Start(AddressOf manager1_SendGetRequest, manager1.Mib.CreateVariable(NodeName.sysContact))
End Sub

Private Sub manager1_SendGetRequest(ByVal slave As Dart.Snmp.ManagerSlave, ByVal state As Object)
	'Create Get Request
	Dim request As GetMessage = New GetMessage()
	request.Community = "public"
	request.Version = SnmpVersion.One
	request.Variables.Add(CType(IIf(TypeOf state Is Variable, state, Nothing), Variable))

	'Send request and get response
	Dim response As ResponseMessage = slave.GetResponse(request, myAgentAddress)

	'Marshal message to the UI thread using the Message event
	manager1.Marshal(New ResponseMessage() { response }, Nothing)
End Sub

Private Sub manager1_Message(ByVal sender As Object, ByVal e As Dart.Snmp.MessageEventArgs)
	'Display info about the first variable in the response, and its value
	Dim var As Variable = CType(IIf(TypeOf e.Messages(0).Variables(0) Is Variable, e.Messages(0).Variables(0), Nothing), Variable)
	label1.Text = var.Definition.ToString() & var.Value.ToString()
End Sub

Remarks

This method can be used to marshal messages from a worker thread to the UI thread for typical display purposes. It calls the OnMessage method on the UI thread, which raises the Message event.

Requirements

Target Platforms: Microsoft .NET Framework 2.0

See Also

Documentation Version 4.2
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