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Hey everyone,

I'm trying to send the value from a serial port via myPort.DataReceived() to a textlabel on my windows form. Error is of course, that I can't access the control from a different thread. I know i need to use invoke for that but can't get it right. I tried this:
void startlistening()
{    
   port.DataReceived.BeginInvoke += new SerialDataReceivedEventHandler (port_DataReceived);
}
 
void port_DataReceived()
{
    label.Text = port.ReadExisting();
}
Posted 13-Apr-12 3:22am
Edited 13-Apr-12 9:26am
v2

1 solution

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Solution 1

The easiest way is to set up a method for it:
private void SetLabelText(Label l, string s)
    {
    if (InvokeRequired)
        {
        Invoke(new MethodInvoker(delegate { SetLabelText(l, s); }));
        }
    else
        {
        l.Text = s;
        }
    }
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Comments
Member 8404471 at 13-Apr-12 9:34am
   
Thanks!!!

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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0 Mika Wendelius 220
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3 Sergey Alexandrovich Kryukov 145
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