use of invoke method with assigned method

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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:

C#

void startlistening()
{    
   port.DataReceived.BeginInvoke += new SerialDataReceivedEventHandler (port_DataReceived);
}

void port_DataReceived()
{
    label.Text = port.ReadExisting();
}

Posted 13-Apr-12 3:22am

Member 8404471

Updated 13-Apr-12 9:26am

fjdiewornncalwe

v2

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OriginalGriff · Accepted Answer · 2012-04-13T03:28:00

Solution 1

The easiest way is to set up a method for it:

C#

private void SetLabelText(Label l, string s)
    {
    if (InvokeRequired)
        {
        Invoke(new MethodInvoker(delegate { SetLabelText(l, s); }));
        }
    else
        {
        l.Text = s;
        }
    }

Posted 13-Apr-12 3:28am

OriginalGriff

Comments

Member 8404471 13-Apr-12 9:34am

Thanks!!!