object reference compiling error

Question

private static void runantc_OutputDataReceived(object sendingProcess, DataReceivedEventArgs outLine)  
        {
            // Collect the sort command output.
            if (!String.IsNullOrEmpty(outLine.Data))
            {
                ProcoutputTextBlock.Dispatcher.BeginInvoke(new Action(() => { ProcoutputTextBlock.Text += outLine.Data; }, null));
            }
        }

Hi, in the above code i am having errors @ProcoutputTextBlock Error 1 An object reference is required for the non-static field, method, or property 'WpfApplication1.Window1.ProcoutputTextBlock'

and @ () => { ProcoutputTextBlock.Text += outLine.Data; }, null Error 2 Method name expected

can anybody enlighten me?

Adam Robinson · Accepted Answer · 2011-06-21 02:09:46Z

2

Your function is static, which means that it requires a reference to an instance of the class in order to access any instance members. Since I'm assuming that ProcoutputTextBlock is a TextBlock on your window, it needs an instance in order to access it.

The other option is making the function non-static, but since you don't show how this event handler is being attached, I don't know if that's a viable option for you.

answered Jun 21, 2011 at 2:09

Adam Robinson

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Alex Aza · Accepted Answer · 2011-06-21 02:08:38Z

1

ProcoutputTextBlock is an instance property. You are accessing instance property from static method runantc_OutputDataReceived.

To resolve this remove static from runantc_OutputDataReceived declaration.

To fix the second issue, remove the second argument null. Like this:

ProcoutputTextBlock.Dispatcher.BeginInvoke(new Action(() => { ProcoutputTextBlock.Text += outLine.Data; }));

or

ProcoutputTextBlock.Dispatcher.BeginInvoke((Action)(() => { ProcoutputTextBlock.Text += outLine.Data; }));

answered Jun 21, 2011 at 2:08

Alex Aza

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