Control.invoke() throws System.ArgumentException with Error message as 'Parameter is not valid'

Question

Hi All,
While doing cross thread communication, i am getting System.ArgumentException with Error message as 'Parameter is not valid' when call is made on the control.invoke(delegate method, parama object[]).
I have checked the parameters, all parameters look good.
Please share your views on this.

Answer 1

I am going to explain the following Exception schenario.
The RenderForm() is called from different thread and initially panel.InvokeRequired is true as it gets called from different thread and then invoke() gets called.
So again same method is getting called and InvokeRequired property has then changedd to false and then else part of the code is executed however if i call the RenderForm() repetadely then application throws the exception as stem.ArgumentException with Error
message as 'Parameter is not valid'
And the Exception stack trace is as below-
  Type: System.ArgumentException
  Message: Parameter is not valid.
  Source: System.Windows.Forms
  TargetSite: System.Object MarshaledInvoke(System.Windows.Forms.Control, System.Delegate, System.Object[], Boolean)
  StackTrace: at System.Windows.Forms.Control.MarshaledInvoke(Control caller, Delegate method, Object[] args, Boolean synchronous)
  StackTrace: at System.Windows.Forms.Control.Invoke(Delegate method, Object[] args)
  StackTrace: at NCR.APTRA.RendererCore.RendererCore.RenderForm(TTUForm form, IDataRecord data, Boolean clear)
Adding the code snippet:
private void RenderForm(TTUForm form, IDatRec.IDataRecord data, bool clear)
            if (panel.InvokeRequired)
                    panel.Invoke(new RenderFormInvoke(RenderForm), new object[] { form, data, clear });
   else
//logic to draw the window content
Please help me on this.. Thanks..