No update in UA Expert after node.Write(Attributes.Value,...

[thomas-jung]

Built a little server close to the Tutorials Parts 1 ... 3.

During startup the configuration of the variable node is set by:
SetVariableConfiguration(nidVariableCount, NodeHandleType.Internal, "MyCounter");

After the server started up, a timer is started which triggers following method:

private void timerElapsed(object sender, System.Timers.ElapsedEventArgs e)
{
Node n = this.FindInMemoryNode(nidVariableCount) ;

if (n != null)
{
n.Write(Attributes.Value, counter++);
}
}


The node seems to be found correctly, i can identify it by some userdata i added to it during startup. Also the attribute is actually updated as i can see the changing value in the debugger. My problem is: In the UA Expert i cannot see any change of the attribute value, it stays 0, no matter how often i trigger th refresh button. What is my mistake?

[Support Team]

Hello,

The Node.Write method does not report the DataChanges implicitly. You have to call ReportChanges manually after each value-update:

NodeAttributeHandle handle;
GetNodeHandle(Server.DefaultRequestContext, nidVariableCount, Attributes.Value, out handle);
ReportDataChanges(Server.DefaultRequestContext, handle);

Best regards
Support Team