Question

I have an application with a Panel containing children Form objects. When I click one of the children Form it brings to front. I would like to know which one is in front now…
I’ve looked in event list but cant find proper event form my purpose 🙁

These methods doesn’t work:

    protected void OpenedFileForm_Enter(object sender, EventArgs e)
    {
        MessageBox.Show("enter");
    }

    protected void OpenedFileForm_Click(object sender, EventArgs e)
    {
        MessageBox.Show("click");
    }

    protected void OpenedFileForm_Activated(object sender, EventArgs e)
    {
        MessageBox.Show("activated");
    }

    protected void OpenedFileForm_MouseClick(object sender, MouseEventArgs e)
    {
       MessageBox.Show("mouse click");
    }

    protected void OpenedFileForm_Shown(object sender, EventArgs e)
    {
        MessageBox.Show("shown");
    }

        OpenFileDialog openFile1 = new OpenFileDialog();

        openFile1.DefaultExt = "*.txt";
        openFile1.Filter = "TXT Files|*.txt|RTF Files|*.rtf";

        if (openFile1.ShowDialog() == System.Windows.Forms.DialogResult.OK &&
           openFile1.FileName.Length > 0)
        {

            switch (Path.GetExtension(openFile1.FileName))
            {

                case ".txt":
                    txtForm childTXT = new txtForm();
                    this.childForms.Add(childTXT);
                    childTXT.Parent = this.mainPanel;              
                    childTXT.richTextBox1.LoadFile(openFile1.FileName, RichTextBoxStreamType.PlainText);                                               
                    childTXT.Show();
                    break;
            }


        }

Answer 1

Have you tried the Form.Activated Event?

http://msdn.microsoft.com/en-us/library/system.windows.forms.form.activated(v=vs.80).aspx

Edit:

If you are in an MDI application, you might need to use MdiChildActivate instead.

http://msdn.microsoft.com/en-us/library/system.windows.forms.form.mdichildactivate.aspx