Control ‘X′ accessed from a thread other than the thread it was created on

roidrage666 · #1 22-Jan-2009, 04:14

I try to access some controls from the DataReceived event of a serial port..

I get :
Control ‘X′ accessed from a thread other than the thread it was created on

I googled for a while, and I found this answer to the cross-thread probl.

C-SHARP / C# Code:

private void Form1_Load(object sender, EventArgs e)
{
if(InvokeRequired)
{
this.Invoke(new EventHandler(Form1_Load), new object[]
{sender, e});
return;
}
//Your code here...
}

but it doesn;t work (I guess it has to do with the 'object' thing since DataReceived uses 'System::IO:

orts::SerialDataReceivedEventArgs' instead of EventArgs)

roidrage666 · #2 27-Jan-2009, 01:53

None?

fakepoo · #3 27-Jan-2009, 08:38

Here is how you can do it:

C-SHARP / C# Code:

private delegate void DoSomethingToTheControlDelegate( string argument );
private void DoSomethingToTheControl( string argument )
{
  if (this.InvokeRequired)
  {
    this.Invoke(new DoSomethingToTheControlDelegate(argument), new object[] { argument });
    return;
  }  
  
  // Put the code here to do something to the control
  //........
}

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Control ‘X′ accessed from a thread other than the thread it was created on

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Re: Control ‘X′ accessed from a thread other than the thread it was created on