“A first chance exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll COM" problem en my COM event in c#

Hi there,

can anyone help? problem doesn't exist in vs2003 only in vs2005 BUT i have half fixed it....



Basically an event arrives in c# from my COM activeX ... when it arrives it appears to be in a different thread... well i think that is what the error msg means.... Hence i wrote a delegate and a method to do the writing for me.

If i put a breakpoint on the Eventhandler before the { , and when it enters ... continue and take off break point it appears not to be in a different thread

If i don't put a breakpoint the good news is i got it working ... it prints the data to the textbox BUT errror msg is still displayed in the output window..

Am i a missing something??

Thanks in advance

Ian

public delegate void WriteToLogCallback(string text);  //this is a delegate to do the job


private void myConnection_Data(int hotlink) // is an event that arrives from my COM dll
        {
            Data myData = (Data)myChannel[0].getData();


            txtNum.Invoke(new WriteToLogCallback(this.WriteToLog), new object[]{myData.num});

//txtNum.Text = myData.num;  // This line used to give errro message and not event write to the text box!!

Etc
.
.



        private void WriteToLog(string text)
        {
            // Set the textbox text.
            txtNum.Text = text; /// Ok it now prints the details to the screen in txtbox but the error msg is still displayed
//A first chance exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll COM


        }