Avoid calling Invoke when the control is disposed

Question

I have the following code in my worker thread (ImageListView below is derived from Control):

if (mImageListView != null &&          


        

Answer 1

The solution proposed by Isak Savo

try
  {
  myForm.Invoke(myForm.myDelegate, new Object[] { message });
  }
catch (ObjectDisposedException)
  { //catch exception if the owner window is already closed
  }

works in C# 4.0 but for some reasons it fails in C#3.0 (the exception is raised anyway)

So I used another solution based on a flag indicating if the form is closing and consequently preventing the use of invoke if the flag is set

   public partial class Form1 : Form
   {
    bool _closing;
    public bool closing { get { return _closing; } }

    private void Form1_FormClosing(object sender, FormClosingEventArgs e)
    {
        _closing = true;
    }

 ...

 // part executing in another thread: 

 if (_owner.closing == false)
  { // the invoke is skipped if the form is closing
  myForm.Invoke(myForm.myDelegate, new Object[] { message });
  }

This has the advantage of completely avoiding the use of try/catch.