Populating a listview from another thread

Question

I\'m trying to populate a listview from another class, but I\'m geting this error: \" Cross-thread operation not valid: Control \'listView1\' accessed from a thread other than t

Answer 1

A simple search here on SO would have brought up many results that tell you that it is not allowed to change a GUI control from a thread other than the thread which created the control (cross-thread GUI access).

To do so, everything related to updating the ListView must be done using this.Invoke or this.Dispatcher.Invoke (in WPF).

EDIT
For example this thread here.

Sample code:

private delegate void MyDelegate(string s);

public void UpdateControl(Control targetControl, string text)
{
    if (targetControl.InvokeRequired)
    {
        // THIS IS STILL THE IN THE CONTEXT OF THE THREAD
        MyDelegate call = new MyDelegate(UpdateControl);
        targetControl.Invoke(call, new object[] { text });
    }
    else
    {
        // do control stuff
        // THIS IS IN THE CONTEXT OF THE UI THREAD
    }
}